CN109650891A - It is a kind of carbon-based through type carbon ceramic composite material and preparation method thereof - Google Patents
It is a kind of carbon-based through type carbon ceramic composite material and preparation method thereof Download PDFInfo
- Publication number
- CN109650891A CN109650891A CN201910049133.0A CN201910049133A CN109650891A CN 109650891 A CN109650891 A CN 109650891A CN 201910049133 A CN201910049133 A CN 201910049133A CN 109650891 A CN109650891 A CN 109650891A
- Authority
- CN
- China
- Prior art keywords
- carbon
- composite material
- ceramic composite
- ceramic
- type carbon
- 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.)
- Granted
Links
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
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic 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
- 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
- C04B2235/34—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
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
It is carbon-based through type carbon ceramic composite material that the invention discloses one kind, which is formed by green coke and ceramic mixed sintering；Ceramics are distributed in and form the carbon ceramic composite material that network runs through structure inside carbon-based material in carbon bridge stomata.Steps are as follows for specific preparation method: S1, forming after mixing carbon material powder with ceramic powders columnar material is made；S2, columnar material is placed in vacuum drying oven, is warming up to 650-750 DEG C of Isothermal sinter 2h, after then heating to 2100 DEG C of Isothermal sinter 4h, natural cooling is obtained carbon-based through type carbon ceramic composite material.Carbon ceramic composite material of the invention also has the characteristics that ceramic material in addition to having the characteristics that carbon material, high mechanical strength, self-lubrication, the corrosion resistance of material, heat-resisting quantity is good, wearability is good, the service life of product is long, it can also shorten the process-cycle of product by stocking up early period, realize mass production.
Description
Technical field
The present invention relates to advanced composite material (ACM) technical fields, and in particular to it is a kind of it is carbon-based through type carbon ceramic composite material and its
Preparation method.
Background technique
Carbon-graphite material is widely answered due to characteristics such as its own good self-lubrication, chemical stability, high temperature resistants
Used in industries such as petroleum, chemical industry, machinery, metallurgy, Aeronautics and Astronautics, nuclear powers, but since carbon graphite material belongs to fragile material,
The inherent strength of itself is not high, thus use scope receives many limitations, in order to improve its mechanical strength, it will usually pass through
With ceramics etc. are compound enhances.
Currently, traditional carbon-pottery combination process specifically includes that gas phase reaction, vapor deposition.Usually by special place
Reason, and the carbon graphite part that complete machining is good, it is compound in one layer of carbon pottery of its Surface Creation by gas phase reaction or vapor deposition
Material, and superficial layer still has 10-15% unreacted graphite.What therefore the existing high surface hardness of this kind of product had had again moistens certainly
Slip and corrosion resistance outstanding.
But since the carbon of carbon graphite Surface Creation pottery composite bed thickness is relatively thin, by composite inner tissue, there is no becoming
Change, because technique requires, by the porosity of compound carbon material general 10% or more, this surface combination technology is that can not have
Effect ground reduces the material internal porosity, makes it that can not fundamentally promote the mechanical strength of material, after a period of time,
Carbon is made pottery after composite layer abrasion, and the surface hardness and antioxygenic property of product fail, and the service life of product is short, and can not be standby in advance
Material, the process-cycle is long, and environmental pollution is serious in production process, high production cost.
Summary of the invention
The object of the present invention is to provide a kind of novel carbon-based through type carbon ceramic composite material and preparation method thereof.
The carbon-based type carbon ceramic composite material that runs through provided by the invention is that one kind is distributed in inside carbon-based material by ceramic material
The carbon ceramic composite material that network runs through structure is formed in carbon bridge stomata.The composite material is formed by green coke and ceramic mixed sintering.
95% or more dioxide-containing silica in the ceramic material.Ceramic mass percentage is 5~15% in composite material.
The above-mentioned carbon-based preparation method through type carbon ceramic composite material, mainly by raw material green coke and ceramic mixed-forming after
It is placed in vacuum drying oven and is sintered.Specifically comprise the following steps:
S1, use cold isostatic pressing method that columnar material is made after mixing carbon material powder with ceramic powders；Wherein,
Carbon material is the green coke of granularity 1000-1200 mesh, and ceramics are the earth silicon material of one-component, granularity 600-800 mesh, ceramics
Content is 5~15%.
S2, columnar material is placed in vacuum drying oven, is warming up to 650-750 DEG C of Isothermal sinter 2h, then heats to 2100 DEG C
After Isothermal sinter 4h, natural cooling is obtained carbon-based through type carbon ceramic composite material.
Preferably, in the step S2, the successively Isothermal sinter 2h within the scope of 650-750 DEG C, 900-1000 DEG C of range
Interior Isothermal sinter 3h, Isothermal sinter 4h, 2100 DEG C of Isothermal sinter 4h within the scope of 1600-1700 DEG C obtain carbon-based run through after cooling
Type carbon ceramic composite material.
It may further be preferable that in the step S2, successively in 700 DEG C of Isothermal sinters 2h, 950 DEG C of Isothermal sinter 3h,
1700 DEG C of Isothermal sinters 4h, 2100 DEG C of Isothermal sinter 4h after cooling, are obtained carbon-based through type carbon ceramic composite material.
Make the internal and external temperature of columnar material consistent by constant temperature certain time.Constant temperature 2h makes the interior of material at 700 DEG C
Portion's stomata is opened；Constant temperature 3h softens inner ceramic sufficiently at 950 DEG C；1700 DEG C of constant temperature 4h make binder be carbonized, and shrink, and carbon is former
Son is sufficiently flowed from new arrangement, the ceramics of the inside；2100 DEG C of Isothermal sinter 4h just can guarantee the final performance of material, and the inside is glued
The carbonization of agent ability is tied, is shunk, carbon atom also could adequately be flowed from new arrangement, the ceramics of the inside.
Compared with prior art, the invention has the following advantages:
(1) composite material feature of the invention is sintered in temperature-rise period using carbon substrate, in carbon bridge formation stages carbon materials
Ceramic powders have the characteristics that mobility by thermal softening and gradually in Material product expanded by heating and contraction feature and material, specific
Temperature section, the ceramics that contraction feature when being formed using carbon material carbon bridge squeezes softening bring it about plastic deformation, and with
The raising of temperature is flowed in carbon bridge to be run through, and carbon is consequently formed and runs through with ceramic, this carbon, pottery run through the composite wood of structure
Material, material internal run through structure in network, and this composite material is in addition to having the characteristics that carbon material also with the spy of ceramic material
Point.When being warming up to 400 DEG C to 700 DEG C, due to itself containing binder, (such as petroleum passes through in the basis material (green coke) of carbon
Obtained substance after coking processing) successively experience expansion-carbonization-this process can be shunk, and ceramics start at 600 DEG C it is soft
Change, ceramics have certain mobility at 700 DEG C, and carbon base body is just shunk at this time, are squeezed by shrinking, and ceramics are in carbon base body
Inside forms overall network and runs through structure, to form carbon ceramic composite material, composite material interior exterior materials composition is consistent.And it passes
System technique only allows one layer of carbon ceramic composite material of carbon graphite Surface Creation, and internal material does not change, and due to process requirement, this
The porosity of body material is larger, and mechanical strength is not high.
(2) the carbon bridge network due to ceramics in carbon-based inside, which is formed, runs through structure, and the porosity of composite material is small, mechanical strong
Degree is high, and self-lubrication, corrosion resistance, heat-resisting quantity is good, and since internal overall network runs through, wearability is good, and product makes
It is long with the period, it can also be stocked up by early period, shorten the process-cycle of product, realize mass production.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1, heating curve figure is sintered through type carbon ceramic composite material.
The metallograph of Fig. 2, carbon ceramic composite material.
The electromicroscopic photograph of Fig. 3, carbon ceramic composite material.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
A kind of carbon-based preparation method through type carbon ceramic composite material, specifically comprises the following steps:
S1, the green coke of granularity 1000-1200 mesh is uniformly mixed with the silica of granularity 600-800 mesh, wherein ceramics
Content is 5~15%, and columnar material then is made using cold isostatic pressing method.
S2, columnar material is placed in vacuum drying oven, is warming up to 700 DEG C of Isothermal sinter 2h, then heated to 950 DEG C of constant temperature and burn
3h is tied, then is warming up to 1700 DEG C of Isothermal sinter 4h, is finally warming up to 2100 DEG C of Isothermal sinter 4h, after natural cooling, is obtained carbon-based
Through type carbon ceramic composite material.Specific heating curve is as shown in Figure 1.
Fig. 2 is metallograph of the composite material of embodiment preparation under the conditions of 200 times of amplifications, by that can be seen in figure,
Composite material material is homogeneous, point of no granular size, no boundary line.
Fig. 3 is electromicroscopic photograph of the composite material of embodiment preparation under the conditions of 8000 times of amplifications, by that can see in figure
Out, ceramic material is uniformly distributed in composite material, has formd whole networks through carbon bridge structure.
The performance pair through type carbon ceramic composite material and the carbon ceramic composite material of traditional handicraft preparation prepared in embodiment
Than as shown in table 1.As can be seen that the hardness of New Type of Carbon ceramic composite material of the invention, intensity, bulk density, the porosity and
The performances such as thermal expansion coefficient are significantly better than that the carbon ceramic composite material of traditional handicraft preparation.
Table 1, through the performance test of type carbon ceramic composite material and traditional carbon ceramic composite material
| Properties of sample | Shore hardness | Bulk density | Flexural strength | Compression strength | The porosity | Thermal expansion coefficient |
| Through type carbon ceramic composite material | HS110 | 1.95g/cm3 | 100Mpa | 300Mpa | 1 | 5.5 |
| Conventional carbon ceramic composite material | HS100 | 1.79g/cm3 | 65Mpa | 150Mpa | 2 | 4 |
In conclusion the network provided by the invention through type carbon ceramic composite material due to ceramics in carbon-based inside runs through knot
Structure, high mechanical strength, self-lubrication, the corrosion resistance of material, heat-resisting quantity is good, wear-resisting since internal overall network runs through
Property it is good, the service life of product is long, can also shorten the process-cycle of product by stocking up early period, realizes mass production.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With.It can be applied to various suitable the field of the invention completely.It for those skilled in the art, can be easily
Realize other modification.Therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (10)
1. a kind of carbon-based through type carbon ceramic composite material, which is characterized in that ceramic material is distributed in carbon bridge gas inside carbon-based material
The carbon ceramic composite material that network runs through structure is formed in hole.
2. as described in claim 1 carbon-based through type carbon ceramic composite material, which is characterized in that the composite material is by green coke and pottery
Porcelain mixed sintering forms.
3. as claimed in claim 2 carbon-based through type carbon ceramic composite material, which is characterized in that titanium dioxide in the ceramic material
95% or more silicone content.
4. as claimed in claim 3 carbon-based through type carbon ceramic composite material, which is characterized in that ceramic matter in the composite material
Measuring percentage composition is 5~15%.
5. a kind of preparation method through type carbon ceramic composite material carbon-based as described in claim 1-4 any one, feature exist
In being placed in vacuum drying oven and be sintered by raw material green coke and ceramic mixed-forming.
6. the carbon-based preparation method through type carbon ceramic composite material as claimed in claim 5, which is characterized in that including walking as follows
It is rapid:
S1, columnar material is made with isostatic pressing machine molding after mixing in carbon material powder and ceramic powders；
S2, columnar material is placed in vacuum drying oven, is warming up to 650-750 DEG C of Isothermal sinter 2h, then heat to 2100 DEG C of constant temperature
After being sintered 4h, natural cooling is obtained carbon-based through type carbon ceramic composite material.
7. the carbon-based preparation method through type carbon ceramic composite material as claimed in claim 6, which is characterized in that the step S1
In, carbon material is the green coke of granularity 1000-1200 mesh, and ceramics are the silica of one-component, granularity 600-800 mesh, ceramics
Content is 5~15%.
8. the carbon-based preparation method through type carbon ceramic composite material as claimed in claim 7, which is characterized in that in the step S1
Columnar material is made using cold isostatic pressing method.
9. the carbon-based preparation method through type carbon ceramic composite material as claimed in claim 6, which is characterized in that the step S2
In, the successively Isothermal sinter 2h within the scope of 650-750 DEG C, Isothermal sinter 3h within the scope of 900-1000 DEG C, 1600-1700 DEG C of range
Interior Isothermal sinter 4h, 2100 DEG C of Isothermal sinter 4h after cooling, are obtained carbon-based through type carbon ceramic composite material.
10. the carbon-based preparation method through type carbon ceramic composite material as claimed in claim 9, which is characterized in that the step S2
In, successively in 700 DEG C of Isothermal sinter 2h, 950 DEG C of Isothermal sinter 3h, 1700 DEG C of Isothermal sinter 4h, 2100 DEG C of Isothermal sinter 4h are cold
But it after, obtains carbon-based through type carbon ceramic composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049133.0A CN109650891B (en) | 2019-01-18 | 2019-01-18 | Carbon-based through carbon-ceramic composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049133.0A CN109650891B (en) | 2019-01-18 | 2019-01-18 | Carbon-based through carbon-ceramic composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109650891A true CN109650891A (en) | 2019-04-19 |
| CN109650891B CN109650891B (en) | 2022-05-24 |
Family
ID=66120458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910049133.0A Active CN109650891B (en) | 2019-01-18 | 2019-01-18 | Carbon-based through carbon-ceramic composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109650891B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159987A (en) * | 2022-07-20 | 2022-10-11 | 郑州海赛高技术陶瓷有限责任公司 | Preparation method of carbon-based composite ceramic underflow port |
| CN117447203A (en) * | 2023-12-22 | 2024-01-26 | 成都中超碳素科技有限公司 | Carbon graphite-boron nitride composite material and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413895A (en) * | 2010-03-19 | 2012-04-11 | 福塞科国际有限公司 | Method for production of refractory filter |
| CN105215331A (en) * | 2014-10-22 | 2016-01-06 | 侯玉杰 | High-strength high-density isotropism soaks the preparation method of silver-colored carbon/graphite composite material |
| CN106660887A (en) * | 2014-09-17 | 2017-05-10 | 贝克休斯公司 | Carbon composites |
| CN108863365A (en) * | 2018-07-11 | 2018-11-23 | 大同新成新材料股份有限公司 | A kind of isostatic pressing formed graphite preparation method and preparation facilities |
-
2019
- 2019-01-18 CN CN201910049133.0A patent/CN109650891B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413895A (en) * | 2010-03-19 | 2012-04-11 | 福塞科国际有限公司 | Method for production of refractory filter |
| CN106660887A (en) * | 2014-09-17 | 2017-05-10 | 贝克休斯公司 | Carbon composites |
| CN105215331A (en) * | 2014-10-22 | 2016-01-06 | 侯玉杰 | High-strength high-density isotropism soaks the preparation method of silver-colored carbon/graphite composite material |
| CN108863365A (en) * | 2018-07-11 | 2018-11-23 | 大同新成新材料股份有限公司 | A kind of isostatic pressing formed graphite preparation method and preparation facilities |
Non-Patent Citations (3)
| Title |
|---|
| 吴玉程等编著: "《工程材料基础》", 31 December 2014, 合肥工业大学出版社 * |
| 王振廷等编著: "《石墨深加工技术》", 30 June 2017, 哈尔滨工业大学出版社 * |
| 许斌等编著: "《炭材料生产技术600问》", 31 January 2006, 冶金工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159987A (en) * | 2022-07-20 | 2022-10-11 | 郑州海赛高技术陶瓷有限责任公司 | Preparation method of carbon-based composite ceramic underflow port |
| CN117447203A (en) * | 2023-12-22 | 2024-01-26 | 成都中超碳素科技有限公司 | Carbon graphite-boron nitride composite material and preparation method and application thereof |
| CN117447203B (en) * | 2023-12-22 | 2024-03-15 | 成都中超碳素科技有限公司 | Carbon graphite-boron nitride composite material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109650891B (en) | 2022-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7799375B2 (en) | Process for the manufacturing of dense silicon carbide | |
| JP2505880B2 (en) | Method for producing high-density carbon and graphite products | |
| JP4188194B2 (en) | High porosity porous ceramics produced from inflatable microspheres and preceramic polymer and method for producing the same | |
| Chen et al. | Fabrication of porous silicon carbide ceramics with high porosity and high strength | |
| CN107935634A (en) | A kind of refractory metal compound high-temperature oxidation resistant coating and preparation method thereof | |
| CN107082651B (en) | A kind of coat of silicon carbide and preparation method thereof | |
| Kim et al. | Processing of microcellular mullite | |
| JP2018168047A (en) | Manufacturing method of silicon carbide sintered body | |
| CN109650891A (en) | It is a kind of carbon-based through type carbon ceramic composite material and preparation method thereof | |
| JPS5818349B2 (en) | Gas-impermeable hollow silicon carbide molded product and its manufacturing method | |
| CN106966741A (en) | The preparation method of carbon-fiber reinforced carbon silicon carbide double matrix composite | |
| CN101734925B (en) | Silicon nitride porous ceramics with controllable porosity and preparation method thereof | |
| CN108530104A (en) | PIP combinations growth in situ graphene/boron nitride nano-tube ceramic matric composite densifying method | |
| Zhang et al. | In-situ formed SiC whisker strengthening of silicon carbide reticulated porous ceramics based on 3D printed lattices template | |
| RU2568673C2 (en) | Production of articles from ceramic-matrix composites | |
| Chen et al. | SiC Ceramic‐Bonded Carbon Fabricated With Si3N4 and Carbon Powders | |
| RU2641748C2 (en) | Leak-tight product of high-temperature composite material, reinforced with long-length fibers, and method of its manufacture | |
| JPS6366783B2 (en) | ||
| KR20000067656A (en) | Manufacturing Method of Silicon Carbide Ceramic Seals by Liquid Phase Reaction Sintering | |
| JP2016204255A (en) | Container for firing and manufacturing method of container for firing | |
| KR20020067257A (en) | Manufacturing method of silicon cabide-boron carbide composites by liquid phase reaction sintering | |
| JP2005200239A (en) | Highly heat-conductive graphite material and its production method | |
| JPH10253259A (en) | Material of roller for roller hearth furnace and manufacture thereof | |
| JP7452949B2 (en) | Ceramic fiber reinforced ceramic composite material and its manufacturing method | |
| RU2511415C1 (en) | Ceramic material based on silicon carbide and nitride and method of manufacturing products from it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |