DE102011109573B3 - Preparation of composite component used for mechanical sealing and drawing die, involves forming layer containing silicide, carbide, boride, carbonitride, nitride of metal or its alloy, organic binder and diamond crystals on substrate - Google Patents
Preparation of composite component used for mechanical sealing and drawing die, involves forming layer containing silicide, carbide, boride, carbonitride, nitride of metal or its alloy, organic binder and diamond crystals on substrate Download PDFInfo
- Publication number
- DE102011109573B3 DE102011109573B3 DE201110109573 DE102011109573A DE102011109573B3 DE 102011109573 B3 DE102011109573 B3 DE 102011109573B3 DE 201110109573 DE201110109573 DE 201110109573 DE 102011109573 A DE102011109573 A DE 102011109573A DE 102011109573 B3 DE102011109573 B3 DE 102011109573B3
- Authority
- DE
- Germany
- Prior art keywords
- sic
- silicon
- diamond
- vol
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
- C04B35/573—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained by reaction sintering or recrystallisation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3804—Borides
- C04B2235/3813—Refractory metal borides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3821—Boron carbides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
- C04B2235/383—Alpha silicon carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
- C04B2235/3834—Beta silicon carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3839—Refractory metal carbides
- C04B2235/3843—Titanium carbides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3839—Refractory metal carbides
- C04B2235/3847—Tungsten carbides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3891—Silicides, e.g. molybdenum disilicide, iron silicide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/427—Diamond
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6581—Total pressure below 1 atmosphere, e.g. vacuum
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/666—Applying a current during sintering, e.g. plasma sintering [SPS], electrical resistance heating or pulse electric current sintering [PECS]
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
- C04B2237/04—Ceramic interlayers
- C04B2237/08—Non-oxidic interlayers
- C04B2237/086—Carbon interlayers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/363—Carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/365—Silicon carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/61—Joining two substrates of which at least one is porous by infiltrating the porous substrate with a liquid, such as a molten metal, causing bonding of the two substrates, e.g. joining two porous carbon substrates by infiltrating with molten silicon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Products (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Verbundbauteils sowie ein mit dem Verfahren hergestelltes Verbundbauteil. Dabei sollen diese Bauteile eine Schicht aufweisen, die eine hohe Verschleißbeständigkeit aufweist und ähnliche Eigenschaften wie polykristalline Diamantwerkstoffe oder Werkstoffe auf Basis kubischem Bornitrid erreichen.The invention relates to a method for producing a composite component and to a composite component produced by the method. These components should have a layer which has a high wear resistance and similar properties such as polycrystalline diamond materials or materials based on cubic boron nitride.
So sind mit SiC gebundene Diamantschichten (Diamantgehalte von 30–50 Vol.-%) auf einem Bauteilgrundkörper aus SiC als Verschleißschutzschichten aus der
Es hat sich aber herausgestellt, dass diese Bauteile bei vielen Anwendungen problemlos eingesetzt und durch die Verschleißschutzschichten auch über längere Zeiten genutzt werden können. Werden die Bauteile aber mechanisch bzw. thermisch beansprucht, wie dies beispielsweise bei einem Einsatz als Schneidwerkzeug, der Fall ist wirken sich mechanische Zugspannungen innerhalb der Verschleißschutzschicht nachteilig aus, so dass es zur Zerstörung, zumindest einem teilweisen Ablösen der Verschleißschutzschicht vom Bauteilgrundkörper kommen kann. Es besteht sogar die Gefahr einer Rissbildung in der Verschleißschutzschicht unmittelbar im Anschluss an die Herstellung der Bauteile während des Abkühlens in Folge der Zugspannungen.However, it has been found that these components can be used without problems in many applications and can be used by the wear-resistant layers even over longer periods. If the components but mechanically or thermally stressed, as is the case for example when used as a cutting tool, mechanical tensile stresses within the wear protection layer adversely affect, so that it can destroy, at least a partial detachment of the wear protection layer from the component body come. There is even a risk of cracking in the wear protection layer immediately after the manufacture of the components during cooling as a result of the tensile stresses.
Bei den Bauteilen wirken sich aber Zugspannungen in auf der Oberfläche ausgebildeten Verschleißschutzschichten bei zusätzlich wirkenden Kräften besonders nachteilig aus, da die durch die zusätzlichen äußeren Kräfte wirkenden mechanischen Spannungen zu den bereits vorhandenen inneren eigenen Zugspannungen hinzu kommen und daher die Belastungsgrenze der Bauteile schneller und bei geringeren wirkenden äußeren Kräften und Momenten erreicht wird.In the case of components, however, tensile stresses in wear protection layers formed on the surface have a particularly disadvantageous effect on additionally acting forces, since the mechanical stresses acting through the additional external forces add to the inherent inherent tensile stresses and therefore the load limit of the components is faster and lower acting external forces and moments is achieved.
In der
Es ist daher Aufgabe der Erfindung, Verbundbaueile mit einem Substratkörper, auf dem eine Schicht in der Diamantkristalle enthalten sind, zur Verfügung zu stellen, bei der die Schicht zumindest nahezu frei von mechanischen Zugeigenspannungen ist.It is therefore an object of the invention to provide composite structural parts with a substrate body, on which a layer in the diamond crystals are contained, in which the layer is at least almost free of mechanical tensile residual stresses.
Erfindungsgemäß wird diese Aufgabe mit einem Verfahren, das die Merkmale des Anspruchs 1 aufweist, gelöst. Anspruch 7 betrifft ein mit dem Verfahren hergestelltes Verbundbauteil. Vorteilhafte Ausgestaltungen und Weiterbildungen können mit in untergeordneten Ansprüchen bezeichneten Merkmalen erreicht werden.According to the invention, this object is achieved by a method having the features of
Bei dem erfindungsgemäß hergestellten Verbundbauteil ist auf einer Oberfläche eines Substratkörpers aus SiC mindestens eine Schicht, die aus mindestens 30 Masse-% Diamantkristallen und mindestens 30 Masse-% β-SiC besteht, vorhanden. Zusätzlich zum SiC ist im Substratkörper mindestens eine weitere Komponente enthalten. Diese eine oder auch mehrere Komponente(n) weisen einen thermischen Ausdehnungskoeffizienten auf, der ≥ dem thermischen Ausdehnungskoeffizienten von Diamant ist. Außerdem soll(en) sich die Komponente(n) nicht oder nur mit einem Anteil < 15% in Silicium während der Infiltration lösen oder eine Schutzschicht ausbilden können, die ein weiteres Lösen der weiteren Komponente(n) verhindern. Dabei ist/sind die Komponente(n) in Partikelform innerhalb der SiC-Matrix des Substratkörpers vorhanden. Als weitere Komponente wird eine Komponente eingesetzt, die ausgewählt ist aus einem Metall, einer Metalllegierung, einem Silicid, einem Carbid, einem Borid, einem Metallhydrid, einem Mischcarbid und Diamant.In the composite component produced according to the invention, at least one layer which consists of at least 30% by mass of diamond crystals and at least 30% by mass of β-SiC is present on a surface of a substrate body made of SiC. In addition to the SiC, at least one further component is contained in the substrate body. These one or more component (s) have a thermal expansion coefficient which is ≥ the coefficient of thermal expansion of diamond. In addition, the component (s) should not dissolve or only with a proportion of <15% in silicon during infiltration or form a protective layer that prevent further dissolution of the other component (s). In this case, the component (s) in particle form are present within the SiC matrix of the substrate body. As another component, a component selected from a metal, a metal alloy, a silicide, a carbide, a boride, a metal hydride, a mixed carbide and diamond is used.
Bevorzugt sind dabei MSi2 (mit M = Zr, Hf, Mo, W, Ta, Nb), Mo4.8Si3.5Cp0.3, Ti2SiC, Ti3SiC2, Si3Ti5 auch WC, W2C, B4C/TiB2, ZrB2, HfB2 und/oder W2B4.Preference is given here MSi 2 (with M = Zr, Hf, Mo, W, Ta, Nb), Mo 4.8 Si 3.5 Cp 0.3 , Ti 2 SiC, Ti 3 SiC 2 , Si 3 Ti 5 also WC, W 2 C, B. 4 C / TiB 2 , ZrB 2 , HfB 2 and / or W 2 B 4 .
Eine weitere Komponente könnte neben den bereits explizit genannten, auch eine andere Max-Phase (Mischcarbidphase mit Metall- und Carbideigenschaften) sein. Max-Phasen können teilweise mit Silicium reagieren. Im Substratkörperwerkstoff enthaltene Max-Phasen reduzieren die elastischen Komponenten und beeinflussen den E-Modul, wodurch die Eigenspannungen ebenfalls reduziert werden können. Außerdem kann eine erhöhte Bruchzähigkeit erreicht werden.Another component, in addition to those already explicitly mentioned, could also be another Max phase (mixed carbide phase with metal and carbide properties). Max phases can partially react with silicon. Max phases contained in the substrate body material reduce the elastic components and influence the modulus of elasticity, as a result of which the residual stresses can likewise be reduced. In addition, an increased fracture toughness can be achieved.
Eine homogene Verteilung an weiterer Komponente im Werkstoff des Substratkörpers ist wünschenswert, wodurch eine gleichmäßige Eigenspannungsverteilung innerhalb seines Volumens erreicht werden kann, die auch bei sich verändernder Temperatur beibehalten werden kann. Die Partikelgröße hat auch einen Einfluss auf die Lösbarkeit in Silicium, das bei einer Infiltration zugeführt wird. So können kleinere Partikel schneller und vermehrt in Silicium gelöst werden, als dies bei größeren Partikeln, der Fall ist. Letztgenannte lösen sich mit einem geringeren Anteil, so dass die vorteilhafte Wirkung der weiteren Komponente im Substratkörperwerkstoff beibehalten werden kann. Die Partikelgröße sollte so gewählt werden, dass für die jeweilige weitere Komponente die Partikel nicht mit der Siliciumschmelze bei der Infiltration in die Diamantkristalle enthaltende Schicht transportiert werden und auch eine Lösung in Silicium, falls eine Löslichkeit möglich ist, klein gehalten werden kann, so dass ein ausreichender Konzentrationsgradient, der jeweiligen weiteren Komponente, zwischen der Schicht und dem Substratkörper erhalten bleibt, mit dem die Eigenspannungen der Schicht in der gewünschten Form beeinflusst werden können. A homogeneous distribution of further component in the material of the substrate body is desirable, whereby a uniform residual stress distribution can be achieved within its volume, which can be maintained even with changing temperature. The particle size also has an influence on the solubility in silicon, which is supplied in an infiltration. Thus, smaller particles can be dissolved faster and more in silicon than is the case with larger particles. The latter dissolve with a smaller proportion, so that the advantageous effect of the further component in the substrate body material can be maintained. The particle size should be selected so that for the respective further component, the particles are not transported with the silicon melt in the infiltration into the diamond crystals containing layer and also a solution in silicon, if a solubility is possible, can be kept small, so that sufficient concentration gradient, the respective further component, is maintained between the layer and the substrate body, with which the residual stresses of the layer can be influenced in the desired shape.
Für weitere Komponenten mit geringer Löslichkeit in Silicium können Partikelgrößen im Bereich 1 μm bis 3 μm sinnvoll sein. Für weitere Komponenten mit höherer Löslichkeit in Silicium sollten Partikelgrößen im Bereich 10 μm bis 50 μm gewählt werden.For other components with low solubility in silicon, particle sizes in the range of 1 μm to 3 μm may be useful. For other components with higher solubility in silicon particle sizes in the
Der Anteil an weiterer Komponente im fertig hergestellten Substratkörper sollte so groß sein, dass keine mechanischen Spannungen in der auf dem Substratkörper ausgebildeten Schicht vorhanden sind oder in der Schicht mechanische Druckspannungen, im unbelasteten Zustand wirken. In der Regel sind dies mindestens 10 Vol.-% (siehe Tabelle A).The proportion of further component in the finished substrate body should be so large that no mechanical stresses are present in the layer formed on the substrate body or in the layer mechanical compressive stresses act in the unloaded state. As a rule, these are at least 10% by volume (see Table A).
Die Eigenspannungen können wie folgt bestimmt werden. Spannungen – Makroskopisches Interface The residual stresses can be determined as follows. Voltages - Macroscopic Interface
Dabei sind V1, V2 und V3 die Volumenanteile der Phasen. Phasenkonstanten für verschiedene mögliche Phasen sind in der Tabelle A angegeben.In this case, V 1 , V 2 and V 3 are the volume fractions of the phases. Phase constants for various possible phases are given in Table A.
Die auf dem Substratkörper ausgebildete Schicht weist 30 bis 70 Masse-% Diamantkristalle und 70 bis 30 Masse-% β-SiC auf.The layer formed on the substrate body has 30 to 70% by mass of diamond crystals and 70 to 30% by mass of β-SiC.
Bei der Herstellung eines erfindungsgemäßen Verbundbauteils wird so vorgegangen, dass ein Substratkörper, der aus einer SiC-Keramik oder einem SiC-Keramikvorprodukt, in der/dem mindestens eine weitere Komponente in Form von Partikeln enthalten ist, mit mindestens einer Schicht, die mit einem organischen Binder und Diamantkristallen gebildet ist, an der Oberfläche beschichtet wird. Die weitere Komponente hat einen thermischen Ausdehnungskoeffizienten, der ≥ dem thermischen Ausdehnungskoeffizienten von Diamant ist und die Komponente ist nicht oder nur mit einem Anteil < 15 Vol.-% in Silicium lösbar.In the production of a composite component according to the invention, the procedure is such that a substrate body which is made of a SiC ceramic or a SiC ceramic precursor, in which / at least one further component in the form of particles, with at least one layer containing an organic Binder and diamond crystals is formed on the surface is coated. The other component has a coefficient of thermal expansion which is ≥ the coefficient of thermal expansion of diamond and the component is not or only in proportion <15 vol .-% soluble in silicon.
Der so beschichtete Substratkörper wird in einer inerten Atmosphäre oder unter Einhaltung von Vakuumbedingungen einer thermischen Behandlung unterzogen und dabei wird eine thermische Zersetzung des organischen Binders unter Bildung von Kohlenstoff erreicht.The thus-coated substrate body is subjected to a thermal treatment in an inert atmosphere or under vacuum conditions, and thereby thermal decomposition of the organic binder to form carbon is achieved.
Gleichzeitig oder nachfolgend wird eine Infiltration mit Silicium oder einer Siliciumlegierung, bei einer Temperatur oberhalb der Schmelztemperatur von Silicium oder der Siliciumlegierung und unterhalb von 1650°C, ebenfalls in inerter Atmosphäre oder bei Einhaltung von Vakuumbedingungen durchgeführt. Bei dieser Wärmebehandlung reagiert der gebildete Kohlenstoff und/oder ein kleiner Anteil an Diamant mit Silicium zu β-SiC und es werden Poren mit Silicium oder der Siliciumlegierung gefüllt, so dass eine Diamantkristalle enthaltende mit dem β-SiC gebundene Schicht ausgebildet wird.Simultaneously or subsequently, an infiltration with silicon or a silicon alloy, at a temperature above the melting temperature of silicon or silicon alloy and below 1650 ° C, also carried out in an inert atmosphere or in compliance with vacuum conditions. In this heat treatment, the carbon formed and / or a small amount of diamond reacts with silicon to form β-SiC, and pores are filled with silicon or the silicon alloy to form a β-SiC bonded layer containing diamond crystals.
Für den Fall, dass die Temperatur bei der Silicium-Infiltration erhöht wird, kann sich an Grenzflächen zwischen Diamant und SiC eine Graphitschicht bilden, die zu einer weniger festen Einbindung der Diamantkristalle in die SiC-Matrix führt. Über die Parameter bei der Infiltration (Temperatur und Zeit) und die Art der eingesetzten Diamantkristalle kann die Schicht aber auch gezielt beeinflusst werden.In the case where the temperature is increased in the silicon infiltration, a graphite layer can form at interfaces between diamond and SiC, resulting in a less firm integration of the diamond crystals in the SiC matrix. However, the layer can also be influenced in a targeted manner via the parameters during infiltration (temperature and time) and the type of diamond crystals used.
Die Beschichtung zur Ausbildung der Schicht kann durch Tauchen, Spritzguss, Laminieren von Folie, Pressen, elektrophoretische Abscheidung, Gießen oder Heißgießen erfolgen.The coating for forming the layer can be done by dipping, injection molding, laminating foil, pressing, electrophoretic deposition, casting or hot casting.
Der Substratkörper sollte aus pulverförmigem SiC und mindestens einer pulverförmigen weiteren Komponente hergestellt werden. Dabei ist es von Bedeutung, dass eine weitere Komponente im festen Aggregatzustand eingesetzt und mit dem SiC gemeinsam gesintert wird.The substrate body should be made of powdery SiC and at least one powdery further component. It is important that another component is used in the solid state and sintered together with the SiC.
Eine weitere Komponente sollte, wie bereits angedeutet, mit einer mittleren Partikelgröße eingesetzt werden, bei der sich maximal 15 Vol.-% der weiteren Komponente während der Infiltration in Silicium lösen.Another component should, as already indicated, be used with an average particle size at which a maximum of 15% by volume of the further component dissolves during the infiltration into silicon.
Die Herstellung der Formkörper kann durch Pressen warm oder kalt, auch zweilagig, CIP, normales Spritzgießen, Heißgießen, Schlickergießen, Gelcasting, Coextrudieren oder Laminieren erfolgen.The production of the moldings can be carried out by pressing hot or cold, even two-ply, CIP, normal injection molding, hot casting, Schlickergießen, gel casting, coextruding or laminating.
Möglichkeiten zur Durchführung einer Infiltration von SiC mit Silicium sind von M. Esfehanian u. a. in „Development of high temperature Cf/XSi2 – SiC (X=Mo, Ti) composite via reactive met infiltration”; Journal European Ceramic Society; 27; 2007; Seite 1229 beschrieben.Possibilities for carrying out an infiltration of SiC with silicon are described by M. Esfehanian et al. In "Development of high temperature C f / XSi 2 - SiC (X = Mo, Ti) composite via reactive met infiltration"; Journal European Ceramic Society; 27; 2007; Page 1229 described.
Mit den erfindungsgemäßen Verbundbauteilen können um bis zu 300 MPa höhere Festigkeiten erreicht werden, wodurch insbesondere die Bruchfestigkeit und damit auch der Einsatzbereich positiv beeinflusst werden können.With the composite components according to the invention higher strengths can be achieved by up to 300 MPa, which in particular the breaking strength and thus also the application can be positively influenced.
Nachfolgend soll die Erfindung beispielhaft näher erläutert werden.The invention will be explained in more detail by way of example in the following.
Dabei können den folgenden Tabellen mögliche Zusammensetzungen und die Eigenspannungsverhältnisse im Substratkörper und der Schicht, für verschiedene Beispiele entnommen werden. Die Spannungen wurden für eine Dicke der Schicht von 2 mm und eine Dicke des Substratkörpers von 5 mm berechnet. Dabei sind σDia die Spannung Diamant enthaltenden Schicht und σsub die Spannung im Substratkörper. Substrat- SiSiC + MoSi2
Nachfolgend sollen Beispiele für die Herstellung erfindungsgemäßer Verbundbauteile erläutert werden.In the following, examples of the production of composite components according to the invention will be explained.
Beispiel 1a und 1b:Example 1a and 1b:
Erfindungsgemäße Verbundbauteile können mittels Gießformgebung in einem endformnahen Verfahren hergestellt werden. Dabei werden fließfähige Massen für den Substratkörper und die Schicht hergestellt. Für die Schicht werden Diamantkristalle mit einer mittleren Partikelgröße d50 von 10 μm in einem Gemisch aus Phenolharz mit Ethanol dispergiert. Der Anteil an Phenolharz entspricht dabei 30 Masse-%.Composite components according to the invention can be produced by means of casting in a near net shape process. In this case, flowable masses for the substrate body and the layer are produced. For the layer, diamond crystals having a mean particle size d 50 of 10 μm are dispersed in a mixture of phenolic resin with ethanol. The proportion of phenolic resin corresponds to 30% by mass.
Der Substratkörper wird aus zwei SiC-Fraktionen (α-SiC mit 70 Vol.-% bei einer mittleren Partikelgröße d50 von 50 μm und 30 Vol.-% α-SiC bei einer mittleren Partikelgröße d50 von 2 μm) hergestellt. Dieser Zusammensetzung wird als weitere zusätzliche Komponente 20 Vol.-% MoSi2 für das Beispiel 1a und 30 Vol.-% B4C für das Beispiel 1b zugegeben. Diese Anteile an zusätzlicher Komponente ermöglichen eine Minimierung der Eigenspannungen in der auf dem Substratkörper ausgebildeten Schicht, was den vorangestellten Tabellen entnommen werden kann. Das für die Herstellung der Schicht eingesetzte Diamant-Pulver wird mit einer Phenolharzmischung mit einem Anteil von 30 Masse-%, analog zur Herstellung für den Substratkörper, dispergiert.The substrate body is produced from two SiC fractions (α-SiC with 70% by volume with an average particle size d 50 of 50 μm and 30% by volume α-SiC with a mean particle size d 50 of 2 μm). This composition is added as further
Die viskosen Gießmassen können anschließend endkonturnah in die gewünschte Form gegossen werden. Es wird eine Wärmebehandlung durchgeführt, bei der zuerst eine der beiden vorbereiteten Zusammensetzungen bei 80°C in einen gelartigen Zustand versetzt wird. Anschließend wird diese mit der zweiten Zusammensetzung verbunden. The viscous casting compounds can then be poured near net shape into the desired shape. A heat treatment is carried out in which first one of the two prepared compositions is placed in a gel state at 80 ° C. Subsequently, this is connected to the second composition.
Die beiden gegossenen Formkörper werden zur Vernetzung bzw. Härtung des organischen Binders, der beispielsweise Phenolharz sein kann, einer weiteren Wärmebehandlung bei 180°C unterzogen.The two molded bodies are subjected to crosslinking or curing of the organic binder, which may be, for example, phenolic resin, a further heat treatment at 180 ° C.
Im Anschluss daran wurde an dem gehärteten Formkörper eine Pyrolyse in einer Argonatmosphäre bei einer Temperatur bis zu 900°C durchgeführt.Thereafter, pyrolysis was performed on the cured molded body in an argon atmosphere at a temperature of up to 900 ° C.
Die abschließende Silicierung der vorab pyrolisierten Formkörper wird in einer Spark-Plasma-Sinteranlage (SPS) durchgeführt. Dabei wird das üblicherweise eingesetzte uniaxiale Presswerkzeug durch ein Tiegelwerkzeug ersetzt, so dass zumindest nahezu drucklos gearbeitet wird. Das Tiegelwerkzeug wir dabei mit dem pyrolysierten Formkörper und grobkörnigen Silicium befüllt. Es soll dabei soviel Silicium eingesetzt werden, dass die noch vorhandenen Poren gefüllt werden und der zusätzliche Kohlenstoff, außer den Diamantkristallen zu SiC umgesetzt wird. Dabei kann der Silicium Überschuss 15% betragen. In der SPS-Anlage erfolgt die Erwärmung zum Schmelzen des Siliciums. Dabei wird das Werkzeug unter Vakuumbedingungen mit einer Heizrate bis zu 50 K/min auf die Temperatur von 1550°C erwärmt und diese Temperatur über 20 min gehalten.The final siliconization of the pre-pyrolyzed moldings is carried out in a spark plasma sintering plant (SPS). In this case, the commonly used uniaxial pressing tool is replaced by a crucible tool, so that at least working almost without pressure. The crucible tool is filled with the pyrolyzed molding and coarse-grained silicon. It should be used so much silicon that the remaining pores are filled and the additional carbon, except the diamond crystals is converted to SiC. The silicon excess may be 15%. In the PLC system, the heating takes place to melt the silicon. The tool is heated under vacuum conditions at a heating rate up to 50 K / min to the temperature of 1550 ° C and held this temperature for 20 min.
Danach ist der Formkörper vollständig mit Silicium infiltriert und weist in der auf dem Substratkörper ausgebildeten Schicht eine Härte (HK2) von 45 GPa auf. Diese Schicht besteht aus Diamantkristallen, β SiC, einem Restanteil an Silicium (≤ 5%). Der Substratkörper enthält α- und β-SiC, Si sowie MoSi2 beim Beispiel 1a und B4C beim Beispiel 1b, was röntgenographisch bestimmt werden kann.Thereafter, the molded body is completely infiltrated with silicon and has a hardness (HK2) of 45 GPa in the layer formed on the substrate body. This layer consists of diamond crystals, β SiC, a residual silicon (≤ 5%). The substrate body contains α- and β-SiC, Si and MoSi 2 in Example 1a and B 4 C in Example 1b, which can be determined by X-ray diffraction.
Beispiel 2a und 2b:Example 2a and 2b:
Bei der Herstellung erfindungsgemäßer Verbundbauteile durch Pressformgebung kann für die Schicht ein pulverförmiges Diamantgranulat eingesetzt werden. Die Granaliengröße liegt im Bereich 100 μm bis 200 μm.In the production of composite components according to the invention by press molding, a powdered diamond granulate can be used for the layer. The granule size is in the
Für die Herstellung wurde Diamantpulver mit einer mittleren Partikelgröße d50 von 20 μm eingesetzt. Zur Herstellung des Granulats wird das Ausgangspulver mit einem Anteil eines organischem Binder von 9 Masse-% in einem Lösungsmittel, z. B. Ethanol gelöst. Die Mischung wird in einem Rotationsverdampfer getrocknet und das entstandene Produkt durch ein Sieb mit einer Maschenweite von 212 μm granuliert.Diamond powder with a mean particle size d 50 of 20 μm was used for the production. For the preparation of the granules, the starting powder with a proportion of an organic binder of 9% by mass in a solvent, for. B. dissolved ethanol. The mixture is dried in a rotary evaporator and the resulting product is granulated through a sieve with a mesh size of 212 microns.
Für den Substratkörper wird ein SiC-Granulat mit einer mittleren Partikelgröße im Bereich 200 μm bis 300 μm eingesetzt, Eine SiSiC typische Zusammensetzung aus maximal 95 Masse-% α-SiC, mit 65 Vol.-% α-SiC mit einer Korngröße d50 von 50 μm und 35 Vol.-% mit einer mittleren Korngröße d50 von 2 μm und einem effektiven Anteil an Kohlenstoff von 5 Masse-% werden mit 10 Masse-% eines Binders in wässriger Suspension dispergiert. Dieser Zusammensetzung wird eine weitere Komponente MoSi2 mit einem Anteil 20 Vol.-%, bezogen auf das Granulat für das Beispiel 2a und 30 Vol.-% B4C für das Beispiel 2b zugemischt. Das Granulat für die Schicht und der Werkstoff für den Substratkörper werden in einer Doppelpresstechnik in einer Presse mit einem Druck von ca. 40 MPa verdichtet. Anschließend wird der so erhaltene Presskörper zur Vernetzung bzw. Härtung des organischen Binders einer Wärmebehandlung bei einer Temperatur von 180°C unterzogen. In diesem Zustand können zusätzliche Konturen, die nicht mittels Pressen realisierbar sind, mit für keramische Werkstoffe typischer Grünbearbeitung eingebracht werden.For the substrate body, a SiC granules having an average particle size in the
Anschließend wurde eine Pyrolyse in Argonatmosphäre bei einer Temperatur von 900°C durchgeführt.Subsequently, pyrolysis was carried out in an argon atmosphere at a temperature of 900 ° C.
Die Infiltration mit Silicium erfolgte ebenfalls in einer Spark-Plasma-Sinteranlage, in einem Tiegelwerkzeug, wie bei den Beispielen 1a und 1b.Silicon infiltration also occurred in a spark plasma sintering machine, in a crucible tool, as in Examples 1a and 1b.
Das erhaltene Verbundbauteil war vollständig siliciert und die Schicht hatte eine Härte (HK2) von 45 GPa. Die die Diamantkristalle enthaltende Schicht besteht dabei aus Diamantkristallen, β-SiC und geringen Anteilen an Silicium. Im Substratkörper waren neben der Hauptphase SiC auch sekundär MoSi2 (Beispiel 2a) oder B4C (Beispiel 2b) vorhanden, was röntgenographisch nachgewiesen werden kann. Kleine Anteile an Graphit können röntgenographisch nicht eindeutig nachgewiesen werden. Dies ist aber mittels FESEM möglich.The obtained composite component was completely silicided and the layer had a hardness (HK2) of 45 GPa. The diamond crystal containing layer consists of diamond crystals, β-SiC and small amounts of silicon. In addition to the main phase SiC, secondary MoSi 2 (Example 2a) or B 4 C (Example 2b) were also present in the substrate body, which can be detected by X-ray diffraction. Small amounts of graphite can not be clearly detected by X-ray diffraction. But this is possible with FESEM.
Nachfolgende Tabelle A gibt die Konstanten für die Bestimmung der Eigenspannungen wieder.
Die nachfolgende
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110109573 DE102011109573B3 (en) | 2011-08-04 | 2011-08-04 | Preparation of composite component used for mechanical sealing and drawing die, involves forming layer containing silicide, carbide, boride, carbonitride, nitride of metal or its alloy, organic binder and diamond crystals on substrate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110109573 DE102011109573B3 (en) | 2011-08-04 | 2011-08-04 | Preparation of composite component used for mechanical sealing and drawing die, involves forming layer containing silicide, carbide, boride, carbonitride, nitride of metal or its alloy, organic binder and diamond crystals on substrate |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011109573B3 true DE102011109573B3 (en) | 2012-10-25 |
Family
ID=46967583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201110109573 Active DE102011109573B3 (en) | 2011-08-04 | 2011-08-04 | Preparation of composite component used for mechanical sealing and drawing die, involves forming layer containing silicide, carbide, boride, carbonitride, nitride of metal or its alloy, organic binder and diamond crystals on substrate |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102011109573B3 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014201731A1 (en) | 2014-01-31 | 2015-08-06 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Component made of ceramic material and method for its preparation |
DE102015206241A1 (en) | 2015-04-08 | 2016-10-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | SiC-diamond composite material and process for its production |
DE102018203882A1 (en) * | 2018-03-14 | 2019-09-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for the production of hard material particles from SiC-bonded diamond, hard-material particles produced by the process, porous components produced with the hard-material particles and their use |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007063517B3 (en) * | 2007-12-21 | 2009-01-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Manufacturing wear-resistant silicon carbide- or carbon component, coats substrate with diamond crystals and binder, fires and infiltrates with silicon at high temperature |
-
2011
- 2011-08-04 DE DE201110109573 patent/DE102011109573B3/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007063517B3 (en) * | 2007-12-21 | 2009-01-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Manufacturing wear-resistant silicon carbide- or carbon component, coats substrate with diamond crystals and binder, fires and infiltrates with silicon at high temperature |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014201731A1 (en) | 2014-01-31 | 2015-08-06 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Component made of ceramic material and method for its preparation |
DE102014201731B4 (en) * | 2014-01-31 | 2017-08-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Component made of ceramic material and method for its preparation |
DE102015206241A1 (en) | 2015-04-08 | 2016-10-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | SiC-diamond composite material and process for its production |
DE102015206241B4 (en) | 2015-04-08 | 2018-10-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | SiC-diamond composite material and process for its production |
DE102018203882A1 (en) * | 2018-03-14 | 2019-09-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for the production of hard material particles from SiC-bonded diamond, hard-material particles produced by the process, porous components produced with the hard-material particles and their use |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1601630B1 (en) | Heat sink having a high thermal conductivity | |
EP1741137B1 (en) | Heat sink made from a diamond/copper composite material containing boron | |
DE3012199C2 (en) | Boron nitride sintered body having a matrix of MC? X?, MN? X? and / or M (CN)? x? and Al and its uses | |
EP1751320B1 (en) | Wearing part consisting of a diamantiferous composite | |
DE102008061024B4 (en) | A method of making TiB reinforced composite titanium alloy based components by powder metallurgy methods | |
DE102007063517B3 (en) | Manufacturing wear-resistant silicon carbide- or carbon component, coats substrate with diamond crystals and binder, fires and infiltrates with silicon at high temperature | |
DE10008686A1 (en) | Fiber-reinforced silicon carbide composite, useful as a structural, fusion reactor or artificial bone material, is made by silicon melt infiltration of a carbonized and reaction sintered fiber moulding containing silicon powder and resin | |
DE102018208427B4 (en) | Process for manufacturing a component, the component itself and its use | |
DE102011109573B3 (en) | Preparation of composite component used for mechanical sealing and drawing die, involves forming layer containing silicide, carbide, boride, carbonitride, nitride of metal or its alloy, organic binder and diamond crystals on substrate | |
EP1657227B1 (en) | Process of manufacture of a carbide ceramic material with a defined graded phase distribution profile, carbide ceramic material and structural member. | |
DE19845151A1 (en) | Metal- or ceramic-bonded cubic boron nitride composite material, especially for cutting tools, is produced by plasma-assisted hot pressing of a fine matrix powder and boron nitride particle mixture | |
DE69631897T2 (en) | METAL CARBIDE-CONTAINING REFRACTORY MATERIALS | |
WO2013113944A1 (en) | Fiber-reinforced silicon carbide composite materials | |
DE2923729A1 (en) | SINTER-CERAMIC PRODUCT AND METHOD FOR THE PRODUCTION THEREOF | |
DE19706925C2 (en) | Process for producing ceramic-metal composite bodies, ceramic-metal composite bodies and their use | |
DE19612926A1 (en) | Modified silicon nitride composite powder for thermal coating technologies and processes for their production | |
DE102015206241B4 (en) | SiC-diamond composite material and process for its production | |
EP1310469B1 (en) | A process for production of ceramic bearing components | |
DE4331307C2 (en) | Manufacture of a carbon fiber reinforced composite and its use | |
DE102012012227A1 (en) | Producing silicon carbide based ceramic sintered body that is useful e.g. for fabricating semiconductors, comprises sintering powder body in inert gas atmosphere, and performing gas pressure sintering in nitrogen-containing atmosphere | |
WO2009112192A2 (en) | Composite material based on transition metal borides, method for the production thereof, and use thereof | |
DE3603331A1 (en) | SILICON CARBIDE SINTER PRODUCT AND METHOD FOR THE PRODUCTION THEREOF | |
DE102008034258B4 (en) | Sintered material and process for its production | |
DE4026127C2 (en) | Process for producing a pressure-free sintered product | |
DE102015210831B4 (en) | Process for producing a material in which diamond or cBN particles are embedded as hard material in a silicon nitride matrix |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20130126 |