CN202643896U - Crucible made of carbon/carbon composite material - Google Patents
Crucible made of carbon/carbon composite material Download PDFInfo
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- CN202643896U CN202643896U CN 201220240145 CN201220240145U CN202643896U CN 202643896 U CN202643896 U CN 202643896U CN 201220240145 CN201220240145 CN 201220240145 CN 201220240145 U CN201220240145 U CN 201220240145U CN 202643896 U CN202643896 U CN 202643896U
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- carbon
- crucible
- silicon carbide
- composite material
- carbon composite
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Abstract
The utility model relates to a crucible made of carbon/carbon composite material. The crucible comprises a crucible body made of the carbon/carbon composite material, a silicon carbide outer coating coated on the outer surface of the crucible body and a silicon carbide inner coating coated on the inner surface of the crucible body. The thickness of the silicon carbide inner coating and the silicon carbide outer coating in the crucible made of the carbon/carbon composite material is 0.1-1.5mm, the strength is very high, the micro-hardness is above 30000MPa, the wear-resistant strength of the surface of the carbon/carbon composite material can be greatly improved, SiO steam in a single crystal silicon furnace and volatilized O atoms can be prevented from corroding the surface of the crucible, and the service life can be prolonged by 20% in comparison with the crucible without the silicon carbide coatings.
Description
Technical field
The utility model relates to a kind of carbon/carbon composite material crucible, particularly a kind of monocrystaline silicon stove carbon/carbon composite material crucible.
Background technology
It is a kind of very ripe technique that vertical pulling method prepares silicon single crystal, be characterized in the mode direct heating charcoal/charcoal crucible by resistive heating, by thermal conduction, silica flour in the inner quartz crucible of charcoal/charcoal crucible is melted into liquid state, control suitable temperature, allow the oriented seed grain of pulling machine below contact with silicon solution, under the rotation and the draw that makes progress of pulling machine, have the silicon single crystal rod of certain sequence of rules just from growth from solution out.
Carbon/carbon composite material crucible has at first replaced traditional isostatic pressing formed graphite crucible at present, reason is: 1. plumbago crucible intensity is low, to bear the extruding that is subjected to quartz crucible and molten silicon gravity on the one hand in the crystal pulling process, to overcome on the other hand turning effort to wearing and tearing and the mechanical shock of crucible, affect crucible life; 2. in the crystal pulling process, the SiO of Si steam and volatilization and plumbago crucible surface reaction are so that crucible surface becomes fragile efflorescence, the work-ing life of having reduced equally crucible.
Carbon/carbon composite material crucible, adopt the carbon fiber knit body to do skeleton, pass through chemical vapor deposition method, make carbon matrix infiltration and deposit in the middle of the space of fiber preform, form the mixed pure land structure of a kind of similar reinforcing bar, greatly having improved the intensity of crucible, approximately is 10 times of plumbago crucible intensity according to the intensity of testing carbon/carbon composite material crucible.In addition carbon fiber difficult with the silicon steam reaction, improved the corrosion resistance nature of carbon-carbon composites crucible, thus the life-span of having improved crucible.Because the thermal expansivity of carbon/carbon composite is little, good thermal shock is not easy to crack in very hot extremely cold environment, grows than the graphite material life-span and has improved 3-5 doubly, has reduced to a great extent the production cost of silicon single crystal.
Although the stability of carbon/carbon composite material crucible and life-span obviously are better than the isostatic pressing formed graphite crucible, but the RESEARCH OF PYROCARBON on carbon/carbon composite surface can be reacted with Si steam or SiO, the Formed SiClx, because carbon fiber is more stable, do not react with Si, can stop Si to spread to material internal, so at the inhomogeneous silicon carbide of the Surface Creation of carbon/carbon composite, a certain amount of Si vapor deposition is at material surface simultaneously, the silicon carbide that generates under this condition, no matter be intensity, viscosity is all poor, and after the cooling, very little frictional force just causes it to come off, the discontinuous pitting that is corroded has just appearred in material surface like this, the carbon fiber that protrudes can be polished in each use procedure gradually, and this phenomenon is carried out repeatedly, until can't use the crucible that more renews.
The utility model content
The purpose of this utility model provides that a kind of intensity is higher, the carbon/carbon composite material crucible of longer service life.
The technical solution adopted in the utility model:
A kind of carbon/carbon composite material crucible, it comprises the crucible body of being made by carbon/carbon composite, the silicon carbide undercoat that is uniformly coated on the silicon carbide outer coating of described this external surface of crucible and is uniformly coated on described crucible body internal surface.
The internally coated thickness of described silicon carbide outer coating and silicon carbide is 0.1-1.5mm, microhardness〉30000MPa.
The beneficial effects of the utility model are:
The utility model adopts chemical reaction method; in high temperature sintering furnace; take silicon-dioxide and Pure Silicon Metal as raw material, control the mass ratio of the two, under certain temperature condition; under the protection of carrier gas; at the uniform coat of silicon carbide of Surface Creation one deck of carbon/carbon composite material crucible, through pyroprocessing, improved purity and the intensity of coat of silicon carbide; the corrosion phenomenon of crucible in silicon single crystal avoided in the preparation of this coating, improved intensity and the work-ing life of crucible.
The concrete reaction formula that relates in the preparation of coat of silicon carbide in the utility model is:
Si+SiO
2 
2SiO
SiO
2 
2SiO +O
2C+SiO
2SiC+CO,
Si+C
SiC。
The silicon carbide thermal conductivity is high, thermal expansivity is low, thermal shock resistance is good, coating and the carbon/carbon composite material crucible body made with silicon carbide have preferably consistency, under 1700 ℃ of high temperature, stable performance, the use of silicon carbide inside and outside coating so that the life-span of the utility model carbon/carbon composite material crucible do not have the crucible of coat of silicon carbide to improve 20%.
The thickness of silicon carbide undercoat and silicon carbide outer coating is at 0.1-1.5mm, intensity is very high, microhardness is more than 30000MPa, can increase substantially the abrasion strength resistance on carbon/carbon composite surface, prevented the corrosion of the O atom pairs crucible surface of the interior SiO steam of monocrystaline silicon stove and volatilization, the work-ing life of improving material.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In the accompanying drawings: 1 crucible body, 2 silicon carbide outer coatings, 3 silicon carbide undercoat.
Embodiment
As shown in Figure 1, the present embodiment comprises the crucible body 1 of being made by carbon/carbon composite, the silicon carbide undercoat 3 that is uniformly coated on the silicon carbide outer coating 2 of described crucible body 1 outside surface and is uniformly coated on described crucible body 1 internal surface.The thickness of silicon carbide outer coating 2 and silicon carbide undercoat 3 is 0.5mm, microhardness in the present embodiment〉30000MPa.The silicon carbide thermal conductivity is high, thermal expansivity is low, thermal shock resistance is good, coating and the carbon/carbon composite material crucible body made with silicon carbide have preferably consistency, under 1700 ℃ of high temperature, stable performance, the use of silicon carbide inside and outside coating so that the life-span of the utility model carbon/carbon composite material crucible do not have the crucible of coat of silicon carbide to improve 20%.The thickness of silicon carbide undercoat and silicon carbide outer coating is at 0.1-1.5mm, intensity is very high, microhardness is more than 30000MPa, can increase substantially the abrasion strength resistance on carbon/carbon composite surface, prevented the corrosion of the O atom pairs crucible surface of the interior SiO steam of monocrystaline silicon stove and volatilization, the work-ing life of improving material.
Claims (2)
1. a carbon/carbon composite material crucible is characterized in that it comprises the crucible body (1) of being made by carbon/carbon composite, the silicon carbide undercoat (3) that is uniformly coated on the silicon carbide outer coating (2) of described crucible body (1) outside surface and is uniformly coated on described crucible body (1) internal surface.
2. a kind of carbon/carbon composite material crucible according to claim 1 is characterized in that the thickness of described silicon carbide outer coating (2) and silicon carbide undercoat (3) is 0.1-1.5mm, microhardness〉30000MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220240145 CN202643896U (en) | 2012-05-26 | 2012-05-26 | Crucible made of carbon/carbon composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220240145 CN202643896U (en) | 2012-05-26 | 2012-05-26 | Crucible made of carbon/carbon composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202643896U true CN202643896U (en) | 2013-01-02 |
Family
ID=47413030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220240145 Expired - Fee Related CN202643896U (en) | 2012-05-26 | 2012-05-26 | Crucible made of carbon/carbon composite material |
Country Status (1)
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| CN (1) | CN202643896U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193514A (en) * | 2013-04-07 | 2013-07-10 | 山东国晶新材料有限公司 | Silicon steam corrosion resistant internal coating for directly protecting carbon fiber and in-situ preparation method thereof |
| CN104692826A (en) * | 2015-03-17 | 2015-06-10 | 自贡市鸿飞电碳制品有限责任公司 | Method for prolonging service life of graphite crucible in siliconized graphite prepared through vacuum gas phase deposition reaction method |
| CN107244905A (en) * | 2017-06-05 | 2017-10-13 | 长兴华悦耐火材料厂 | A kind of preparation method of face coat high-temperature crucible |
| CN111893419A (en) * | 2020-07-24 | 2020-11-06 | 西安超码科技有限公司 | Carbon/carbon heat-insulating cylinder with silicon carbide/silicon coating and preparation method thereof |
| CN112694347A (en) * | 2020-12-28 | 2021-04-23 | 湖南世鑫新材料有限公司 | Carbon-carbon composite material crucible with silicon carbide coating and preparation method |
| CN112759423A (en) * | 2020-12-28 | 2021-05-07 | 湖南世鑫新材料有限公司 | Coating carbon-carbon composite material crucible and preparation method thereof |
| CN113073381A (en) * | 2021-03-25 | 2021-07-06 | 湖南世鑫新材料有限公司 | Crucible with silicon carbide/silicon composite ceramic layer |
| CN114804868A (en) * | 2022-04-29 | 2022-07-29 | 吉林电力股份有限公司长春热电分公司 | Preparation method of tungsten trioxide ceramic skeleton crucible |
| CN115073212A (en) * | 2022-06-02 | 2022-09-20 | 陕西美兰德炭素有限责任公司 | Aluminum silicate-silicon carbide high-temperature-resistant and silicon vapor corrosion-resistant coating and preparation method thereof |
-
2012
- 2012-05-26 CN CN 201220240145 patent/CN202643896U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193514A (en) * | 2013-04-07 | 2013-07-10 | 山东国晶新材料有限公司 | Silicon steam corrosion resistant internal coating for directly protecting carbon fiber and in-situ preparation method thereof |
| CN103193514B (en) * | 2013-04-07 | 2014-08-20 | 山东国晶新材料有限公司 | Silicon steam corrosion resistant internal coating for directly protecting carbon fiber and in-situ preparation method thereof |
| CN104692826A (en) * | 2015-03-17 | 2015-06-10 | 自贡市鸿飞电碳制品有限责任公司 | Method for prolonging service life of graphite crucible in siliconized graphite prepared through vacuum gas phase deposition reaction method |
| CN107244905A (en) * | 2017-06-05 | 2017-10-13 | 长兴华悦耐火材料厂 | A kind of preparation method of face coat high-temperature crucible |
| CN111893419A (en) * | 2020-07-24 | 2020-11-06 | 西安超码科技有限公司 | Carbon/carbon heat-insulating cylinder with silicon carbide/silicon coating and preparation method thereof |
| CN112694347A (en) * | 2020-12-28 | 2021-04-23 | 湖南世鑫新材料有限公司 | Carbon-carbon composite material crucible with silicon carbide coating and preparation method |
| CN112759423A (en) * | 2020-12-28 | 2021-05-07 | 湖南世鑫新材料有限公司 | Coating carbon-carbon composite material crucible and preparation method thereof |
| CN112759423B (en) * | 2020-12-28 | 2022-05-27 | 湖南世鑫新材料有限公司 | Coating carbon-carbon composite material crucible and preparation method thereof |
| CN112694347B (en) * | 2020-12-28 | 2022-06-07 | 湖南世鑫新材料有限公司 | Carbon-carbon composite material crucible with silicon carbide coating and preparation method |
| CN113073381A (en) * | 2021-03-25 | 2021-07-06 | 湖南世鑫新材料有限公司 | Crucible with silicon carbide/silicon composite ceramic layer |
| CN114804868A (en) * | 2022-04-29 | 2022-07-29 | 吉林电力股份有限公司长春热电分公司 | Preparation method of tungsten trioxide ceramic skeleton crucible |
| CN115073212A (en) * | 2022-06-02 | 2022-09-20 | 陕西美兰德炭素有限责任公司 | Aluminum silicate-silicon carbide high-temperature-resistant and silicon vapor corrosion-resistant coating and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20160526 |