GB924497A - Improvements in or relating to sintered electric resistance heating elements - Google Patents
Improvements in or relating to sintered electric resistance heating elementsInfo
- Publication number
- GB924497A GB924497A GB23005/59A GB2300559A GB924497A GB 924497 A GB924497 A GB 924497A GB 23005/59 A GB23005/59 A GB 23005/59A GB 2300559 A GB2300559 A GB 2300559A GB 924497 A GB924497 A GB 924497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- boron
- ceramic component
- electric resistance
- resistance heating
- 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.)
- Expired
Links
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/148—Silicon, e.g. silicon carbide, magnesium silicide, heating transistors or diodes
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- 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
- C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/58085—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicides
- C04B35/58092—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicides based on refractory metal silicides
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
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- 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
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- 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
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
- C04B41/5062—Borides, Nitrides or Silicides
- C04B41/5071—Silicides
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- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/87—Ceramics
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
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- 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
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
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- C04B2235/402—Aluminium
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- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
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- 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
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- C04B2235/6021—Extrusion moulding
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- C04B2235/666—Applying a current during sintering, e.g. plasma sintering [SPS], electrical resistance heating or pulse electric current sintering [PECS]
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Abstract
The high temperature part of an electric resistance heating element consists of an insulating refractory base having flame sprayed thereon particles each of the composition (Mo1-yMy) (Si1-xA1x)2 in which M is one or more of Ti Zr Hf Ta Nb V Cr and W, x is from 0,1 to 0,6 and y is from 0 to 0,7. The particles form a layer 10-500m thick. A ceramic component, forming up to 50% by volume of the layer may be included. The ceramic component may be alumina, with or without silica or bentonite, and boron-containing substances may be added to include up to 0,3% by weight of boron in the layer. Specifications 731,616, 791,323, 899,464 and U.S.A. Specification 2,831,242 are referred to.ALSO:The high temperature part of an electric resistance heating element consists of a sintered mass of particles each of the composition (Mo1-yMy)(Si1-xAlx)2 in which M is one or more of Ti, Zr, Hf, Ta, Nb, V, Cr and W, x is from 0.1 to 0.6 and y is from 0 to 0.7. A ceramic component, forming up to 50% by volume of the sintered mass, may be included. The ceramic component may be alumina, with or without silica or bentonite, and boron-containing substances may be added to include up to 0.3% by weight of boron in the sintered mass. The particles of the appropriate composition are produced by mixing the constituent elements and heating under hydrogen. The reaction product is then ball-milled to a particle size of 3-7m mixed with alumina (with or without bentonite) extruded and sintered firstly at 1400 DEG C. in hydrogen and then at 1700 DEG C. in air. The term "sintered mass" also includes the result of flame spraying particles of the appropriate composition on to an insulating refractory base. Specifications 731,616, 791,323, 899,464 and U.S.A. Specification 2,831,242 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE645158 | 1958-07-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB924497A true GB924497A (en) | 1963-04-24 |
Family
ID=20268723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23005/59A Expired GB924497A (en) | 1958-07-05 | 1959-07-03 | Improvements in or relating to sintered electric resistance heating elements |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB924497A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998051127A1 (en) * | 1997-05-06 | 1998-11-12 | Thermoceramix, L.L.C. | Deposited resistive coatings |
JP2003500812A (en) * | 1999-05-20 | 2003-01-07 | サンドビック アクティエボラーグ | Resistance heating element |
US6919543B2 (en) | 2000-11-29 | 2005-07-19 | Thermoceramix, Llc | Resistive heaters and uses thereof |
WO2018222036A1 (en) | 2017-05-30 | 2018-12-06 | Technische Universiteit Delft | Self-healing particles for high temperature ceramics |
-
1959
- 1959-07-03 GB GB23005/59A patent/GB924497A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998051127A1 (en) * | 1997-05-06 | 1998-11-12 | Thermoceramix, L.L.C. | Deposited resistive coatings |
US6762396B2 (en) | 1997-05-06 | 2004-07-13 | Thermoceramix, Llc | Deposited resistive coatings |
JP2003500812A (en) * | 1999-05-20 | 2003-01-07 | サンドビック アクティエボラーグ | Resistance heating element |
US6563095B1 (en) | 1999-05-20 | 2003-05-13 | Sandvik Ab | Resistance-heating element |
EP1710217A1 (en) * | 1999-05-20 | 2006-10-11 | Sandvik Intellectual Property AB | Resistance-heating element |
US6919543B2 (en) | 2000-11-29 | 2005-07-19 | Thermoceramix, Llc | Resistive heaters and uses thereof |
WO2018222036A1 (en) | 2017-05-30 | 2018-12-06 | Technische Universiteit Delft | Self-healing particles for high temperature ceramics |
NL2018995B1 (en) * | 2017-05-30 | 2018-12-07 | Univ Delft Tech | Self-healing particles for high temperature ceramics |
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