CN100540504C - Ternarily doped carbon ceramic composite material and preparation method thereof - Google Patents
Ternarily doped carbon ceramic composite material and preparation method thereof Download PDFInfo
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- CN100540504C CN100540504C CNB2007100716079A CN200710071607A CN100540504C CN 100540504 C CN100540504 C CN 100540504C CN B2007100716079 A CNB2007100716079 A CN B2007100716079A CN 200710071607 A CN200710071607 A CN 200710071607A CN 100540504 C CN100540504 C CN 100540504C
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Abstract
The present invention is to provide a kind of Ternarily doped carbon ceramic composite material and preparation method thereof.According to weight percent is carbon graphite powder 85%, B
4The ratio of C3.1-5.8%, SiC4.2-6.9% and Cr5% mixes each raw material, and the powder that mixes is placed sintering oven under the argon gas atmosphere protection, heat-treats at 1900 ℃, obtains the carbon ceramic composite materials of ternary doping.Adopt the Ternarily doped carbon ceramic composite material of method of the present invention preparation to have physical strength height, high temperature resistant, corrosion-resistant, good, anti-oxidant, the anti-slag of wearability, characteristics that the anti-thermal shock ability is strong, and be a kind of novel high-performance engineering materials that possesses good conductive thermal conductivity, machinability and self-lubricating ability.
Description
One, technical field
What the present invention relates to is a kind of matrix material, specifically a kind of carbon ceramic composite materials.The invention still further relates to a kind of preparation method of carbon ceramic composite materials.
Two, background technology
Carbon materials and stupalith combined make novel carbon/ceramic composite material, be expected to bring into play this two classes material property complementary advantage, it is strong to prepare physical strength height, high temperature resistant, corrosion-resistant, good, anti-oxidant, the anti-slag of wearability, anti-thermal shock ability, and possess the novel high-performance engineering materials of good conductive thermal conductivity, machinability and self-lubricating ability, thereby be used widely.
In the relevant research of carbon ceramic composite materials, often in carbon base body, introduce various additives to improve the performance of material.From carbon graphite/carbon ceramics technical development both at home and abroad at present, the research work majority of carbon ceramic composite materials concentrates in the research of material composition, technology, performance, and systematic study material composition, preparation technology, macro property and microtexture relation are seldom, the performance prediction system of carbon ceramic composite materials does not also form, cause the development and the production cost height of material, unstable properties is difficult to satisfy the demand of defence equipment and commercial market.Therefore, the research of carrying out polynary carbon ceramic composite materials has important theoretical meaning and unusual application prospects.
Three, summary of the invention
The object of the present invention is to provide that a kind of to have a physical strength height, high temperature resistant, corrosion-resistant, good, anti-oxidant, the anti-slag of wearability, anti-thermal shock ability strong, and possess the Ternarily doped carbon ceramic composite material of good conductive thermal conductivity, machinability and self-lubricating ability.The present invention also aims to provide a kind of preparation method of Ternarily doped carbon ceramic composite material.
The object of the present invention is achieved like this: it is carbon graphite powder 85%, B by weight percent
4The mixture of C5.8%, SiC4.2% and Cr5% in the sintering oven under the argon gas atmosphere protection, is heat-treated the carbon ceramic composite materials of the ternary doping that obtains at 1900 ℃.
Product of the present invention is to adopt such method to make: according to weight percent is carbon graphite powder 85%, B
4The ratio of C 3.1-5.8%, SiC4.2-6.9% and Cr5% mixes each raw material, and the powder that mixes is placed sintering oven under the argon gas atmosphere protection, heat-treats at 1900 ℃, obtains the carbon ceramic composite materials of ternary doping.
The XRD interpretation of result thinks that following reaction has taken place process method of the present invention:
3C+2Cr→Cr
2C
3
B
4C+4O
2→2B
2O
3+CO
2
From norbide B
4The macro property of C, silicon carbide SiC, chromium Cr ternary doping system is opened and is seen that its ultimate compression strength reaches 164MPa, and folding strength reaches 42.5MPa, volume density 1.94g/cm
3, void content 1.86%.This is because at norbide B
4Chromium and norbide have good katalysis to the greying of carbon material in C, silicon carbide SiC, the chromium Cr ternary doping system.Among these constituent elements mixed the carbon material matrix, under the high temperature, doping constituent element and carbon base body generated liquid phase, and it turns to perfect recrystallization process to have promoter action to matrix by disordered carbon.Boron forms sosoloid dissolve in the graphite lattice in graphite material among, and the existence of sosoloid makes to connect between particle in the material to be strengthened, thereby the bending strength of material is improved a lot.
The present invention selects Cr, B
4C, SiC are dopant, carry out ternary doping.On technology, take into full account the characteristics of carbon ceramic composite materials.Adopt the Ternarily doped carbon ceramic composite material of method of the present invention preparation to have physical strength height, high temperature resistant, corrosion-resistant, good, anti-oxidant, the anti-slag of wearability, characteristics that the anti-thermal shock ability is strong, and be a kind of novel high-performance engineering materials that possesses good conductive thermal conductivity, machinability and self-lubricating ability.
Four, embodiment
For a more detailed description to the present invention for example below in conjunction with accompanying drawing:
Embodiment one is carbon graphite powder 85%, B according to weight percent
4The ratio of C3.1%, SiC6.9% and Cr5% mixes each raw material, and the powder that mixes is placed sintering oven under the argon gas atmosphere protection, heat-treats at 1900 ℃, obtains the carbon ceramic composite materials of ternary doping.
Embodiment two is carbon graphite powder 85%, B according to weight percent
4The ratio of C5.8%, SiC4.2% and Cr5% mixes each raw material, and the powder that mixes is placed sintering oven under the argon gas atmosphere protection, heat-treats at 1900 ℃, obtains the carbon ceramic composite materials of ternary doping.
Embodiment three is with 2550 gram carbon graphite powders, 94 gram B
4C, 206 gram SiC, 150 gram Cr mix, and put into hot-pressed sintering furnace thermal treatment, at 1900 ℃, under the 30-50MPa pressure, obtain ultimate compression strength and reach 148MPa, and folding strength reaches 38.6MPa, volume density 1.73g/cm
3, the carbon ceramic composite materials of void content 2.54%.
Embodiment four is with 2550 gram carbon graphite powders, 174 gram B
4C, 126 gram SiC, 150 gram Cr mix, and put into hot-pressed sintering furnace thermal treatment, at 1900 ℃, under the 30-50MPa pressure, obtain ultimate compression strength and reach 164MPa, and folding strength reaches 42.5MPa, volume density 1.94g/cm
3, the carbon ceramic composite materials of void content 1.86%.
Claims (2)
1, a kind of Ternarily doped carbon ceramic composite material is characterized in that: it is carbon graphite powder 85%, B by weight percent
4The mixture of C5.8%, Si C4.2% and Cr 5% in the sintering oven under the argon gas atmosphere protection, is heat-treated the carbon ceramic composite materials of the ternary doping that obtains at 1900 ℃.
2, a kind of preparation method of Ternarily doped carbon ceramic composite material is characterized in that: according to weight percent is carbon graphite powder 85%, B
4The ratio of C3.1-5.8%, SiC4.2-6.9% and Cr5% mixes each raw material, and the powder that mixes is placed sintering oven under the argon gas atmosphere protection, heat-treats at 1900 ℃, obtains the carbon ceramic composite materials of ternary doping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100716079A CN100540504C (en) | 2007-01-08 | 2007-01-08 | Ternarily doped carbon ceramic composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100716079A CN100540504C (en) | 2007-01-08 | 2007-01-08 | Ternarily doped carbon ceramic composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101007738A CN101007738A (en) | 2007-08-01 |
| CN100540504C true CN100540504C (en) | 2009-09-16 |
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| CNB2007100716079A Expired - Fee Related CN100540504C (en) | 2007-01-08 | 2007-01-08 | Ternarily doped carbon ceramic composite material and preparation method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979930B (en) * | 2014-05-09 | 2016-09-07 | 湛江市聚鑫新能源有限公司 | A kind of high-heat conductivity graphite material and its preparation method and application |
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2007
- 2007-01-08 CN CNB2007100716079A patent/CN100540504C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| Cr掺杂碳陶瓷复合材料结构和力学性能研究. 乔英杰等.哈尔滨工程大学学报，第25卷第6期. 2004 |
| Cr掺杂碳陶瓷复合材料结构和力学性能研究. 乔英杰等.哈尔滨工程大学学报，第25卷第6期. 2004 * |
| 无粘结剂C-SiC-B4C 系碳/陶复合材料的制备及高温抗氧化性质的研究. 胡晓凯等.湘潭大学自然科学学报，第25卷第1期. 2003 |
| 无粘结剂C-SiC-B4C 系碳/陶复合材料的制备及高温抗氧化性质的研究. 胡晓凯等.湘潭大学自然科学学报，第25卷第1期. 2003 * |
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