CN109279908B - Clamp for preparing ultrathin carbon/carbon composite material panel - Google Patents
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- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
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- 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
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Abstract
Clamp for preparing ultrathin carbon/carbon composite material panelThe clamp comprises a hollowed-out graphite plate and a micropore air guide plate; the clamp is characterized in that a hollowed-out graphite plate, a micropore air guide plate, an ultrathin carbon/carbon composite material blank with the thickness of 0.2-0.8mm, the micropore air guide plate and the hollowed-out graphite plate are sequentially overlapped, and the hollowed-out graphite plates on two sides are clamped along the overlapping direction. The fixture has simple and reasonable structure, can construct an effective channel of carbon source gas between the hollowed-out graphite plate and the ultrathin carbon/carbon composite material blank, uniformly guide the carbon source gas to the ultrathin carbon/carbon composite material blank, solve the problems of uniformity and deformation of chemical vapor carburization density of the blank, and prepare the ultrathin carbon/carbon composite material panel with uniform density and flat surface, wherein the density of the ultrathin carbon/carbon composite material panel is 1.7-2.0g/cm3The thickness is 0.2-0.8 mm.
Description
Technical Field
The invention discloses a clamp for preparing an ultrathin carbon/carbon composite panel, and belongs to the technical field of chemical vapor deposition.
Background
The ultrathin carbon/carbon composite material panel is a flat plate component with the thickness of 0.2-0.8mm and a flat surface. The chemical vapor carburization method is generally adopted to prepare the high-performance ultrathin carbon/carbon composite material panel, but the chemical vapor carburization is a high-temperature chemical treatment process, so that an ultrathin flat plate member is extremely easy to deform in the process and must be controlled by a shaping tool.
In the prior art, a hollow graphite tool is adopted to clamp an ultrathin carbon/carbon composite material for chemical vapor deposition, carbon source gas is guided to a component through hollow holes to implement chemical vapor carburization, and deformation control of the component can be realized at high temperature by utilizing the high-temperature strength performance of graphite to prepare an ultrathin carbon/carbon composite material panel. However, because of certain requirements on the high-temperature strength of graphite, in order to maintain the clamping strength of the hollowed-out graphite tool, gaps among hollowed-out holes are large, and the area of hollowed-out parts is usually not more than 60%, and the hollow-out parts are adoptedThe hollow hole air guide of the hollow graphite tool can cause uneven distribution of carbon source air on the surface of a component when chemical vapor deposition is carried out, effective carburization is obtained on the hollow part, the non-hollow part can not be carburized effectively, and the uniformity of the density and the uniformity of performance of the component are seriously influenced, because the maximum average density of the ultrathin carbon/carbon composite material panel prepared by the prior art adopting the hollow graphite tool can only reach 1.7g/cm3And the requirement on the density of the ultrathin carbon/carbon composite material panel cannot be met.
Therefore, the invention provides a fixture for preparing an ultrathin carbon/carbon composite panel with uniform density and a preparation method of the ultrathin carbon/carbon composite panel, which are needed in the field.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a clamp for preparing an ultrathin carbon/carbon composite panel. The fixture has reasonable structure, can provide a uniform transmission channel for the carbon source gas, ensures that the carbon source gas is uniformly deposited on the ultrathin carbon/carbon composite material, and can prepare the ultrathin carbon/carbon composite material panel with uniform density and deformation meeting the requirement by adopting the fixture to carry out chemical vapor deposition.
The invention relates to a clamp for preparing an ultrathin carbon/carbon composite material panel, which comprises a hollowed-out graphite plate and a microporous air guide plate; the clamp is characterized in that a hollowed-out graphite plate, a micropore air guide plate, an ultrathin carbon/carbon composite material blank with the thickness of 0.2-0.8mm, the micropore air guide plate and the hollowed-out graphite plate are sequentially overlapped, and the hollowed-out graphite plates on two sides are clamped along the overlapping direction.
The clamp for preparing the ultrathin carbon/carbon composite material panel is characterized in that the thickness of the micropore air guide plate is 1-10mm, and the density is 0.3-1.6g/cm3。
The fixture for preparing the ultrathin carbon/carbon composite panel is characterized in that the thickness of the hollowed-out graphite plate is 30-50mm, and the hollowed-out area accounts for 40-60% of the total area of the graphite plate.
The invention relates to a fixture for preparing an ultrathin carbon/carbon composite panel, which is characterized in that hollow graphite plates on two sides are clamped along the superposition direction, and the hollow graphite plates on two sides are fastened by fasteners; the fastener is a bolt and a nut, and the bolt penetrates through a bolt hole formed in the hollowed graphite plate and is fastened by the nut.
The invention relates to a clamp for preparing an ultrathin carbon/carbon composite material panel, wherein a micropore air guide plate is prepared by adopting the following scheme:
needling the carbon fiber net tire into a flat felt, and carrying out chemical vapor carburization densification and hardening; then carrying out graphitization treatment and machining to obtain a micropore air guide plate;
the flat felt formed by needling has a thickness of 3-12mm and a density of 0.1-0.3g/cm3；
The flat felt is densified to 0.3-1.6g/cm by chemical vapor carburization3；
And machining to 1-10mm after graphitization treatment.
The invention relates to a clamp for preparing an ultrathin carbon/carbon composite material panel, wherein a carbon fiber net tire is T700, the thickness of the carbon fiber net tire is 1-6mm, and the density of the carbon fiber net tire is 0.01-0.03g/cm3
The invention relates to a clamp for preparing an ultrathin carbon/carbon composite material panel, which comprises the following technological parameters of chemical vapor carburization and densification: with CH4The furnace temperature is controlled to be 1000-1200 ℃ and the furnace pressure is 1-10kPa as carbon source gas, and the chemical gas phase carburization is accumulated for 5-200h and then the carbon source gas is discharged.
The invention relates to a clamp for preparing an ultrathin carbon/carbon composite material panel, which comprises the following graphitization treatment systems: controlling the atmosphere in the furnace to be 0.11-0.13MPa, the furnace temperature to be 2000-2300 ℃, the heat preservation time to be 1-2h, and cooling along with the furnace.
By adopting the fixture for preparing the ultrathin carbon/carbon composite material panel, chemical vapor carburization densification is carried out through a chemical vapor deposition furnace; the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The carbon source gas is used, the furnace temperature is controlled to be 1000-1200 ℃, the furnace pressure is 1-6kPa, and the ultra-thin carbon/carbon composite material panel with uniform density and deformation meeting the requirement can be prepared by discharging the ultra-thin carbon/carbon composite material panel after accumulating the chemical gas phase carburization for 400 h;
wherein: the thickness of the ultra-thin carbon/carbon composite material blank is 0.2-0.8mm, and the density of the carbon fiber is 0.4-0.8g/cm3(ii) a Ultra-thin carbon/carbon obtained after chemical gas phase carburization and densificationThe density of the composite material panel is 1.7-2.0g/cm3。
The initial carbon fiber density in the microporous air guide plate is less than the initial carbon fiber density in the ultrathin carbon/carbon composite material blank.
The invention relates to a clamp for preparing an ultrathin carbon/carbon composite panel, which has the following structural assembly sequence: the method comprises the following steps of (1) hollowed-out graphite, a micropore gas guide plate, an ultrathin carbon/carbon composite material blank, a micropore gas guide plate and hollowed-out graphite, wherein the ultrathin carbon/carbon composite material blank is clamped between the two micropore gas guide plates;
advantages and positive effects
According to the invention, the carbon fiber net tire is needled into a flat felt, a micropore air guide plate is obtained through chemical vapor carburizing densification hardening, graphitization and machining, and carbon source gas is uniformly guided to the ultrathin carbon/carbon composite material panel by using the micropore air guide plate, so that the problems of uniform chemical vapor carburizing and deformation control of the panel are solved. The initial carbon fiber density is 0.4-0.8g/cm3The ultrathin carbon/carbon composite material blank can be used for preparing the clamp for preparing the ultrathin carbon/carbon composite material panel, and the density of the ultrathin carbon/carbon composite material panel is 1.7-2.0g/cm3And an ultra-thin carbon/carbon composite panel having a thickness of 0.2-0.8 mm. The fixture for preparing the ultrathin carbon/carbon composite panel utilizes the micropore gas guide plate to uniformly guide the carbon source gas to the ultrathin carbon/carbon composite panel, solves the problems of uniform chemical gas phase carburization and deformation control of the panel, and can prepare the ultrathin carbon/carbon composite panel with uniform density and flat surface, wherein the density of the ultrathin carbon/carbon composite panel is 1.7-2.0g/cm3The thickness is 0.2-0.8 mm.
The invention utilizes the micropore gas guide plate to uniformly guide the carbon source gas to the ultrathin carbon/carbon composite material panel, solves the problems of uniform chemical vapor carburization and deformation control of the panel, and has the following advantages.
1. The thickness of the microporous gas guide plate is controlled to be 1-10mm, a large number of micron-scale pores exist in the microporous gas guide plate, an effective channel of carbon source gas is constructed between the hollow graphite plate and the ultrathin carbon/carbon composite material blank, and the carbon source gas is uniformly guided to the ultrathin carbon/carbon composite material panel to realize uniform chemical gas phase carburization of the ultrathin carbon/carbon composite material panel.
2. The initial carbon fiber density of the microporous air guide plate is less than that of the panel, namely the specific surface area of carbon fibers in the panel is larger, the adsorption of carbon source gas is stronger, and the carburizing efficiency is higher.
3. The microporous air guide plate is a carbon fiber reinforced composite material, has good high-temperature strength, has a fixing effect on an ultrathin carbon/carbon composite material panel, and avoids the phenomena of easy deformation and unstable size of a thin plate material.
4. The clamp for preparing the ultrathin carbon/carbon composite material panel has the initial carbon fiber density of 0.4-0.8g/cm3The panel is used as a raw material, and the density of the panel can be 1.7-2.0g/cm3And an ultra-thin carbon/carbon composite panel having a thickness of 0.2-0.8 mm.
Drawings
FIG. 1 is an assembly view of a fixture for preparing an ultra-thin carbon/carbon composite panel according to the present invention;
FIG. 2 is a flow chart of a process for preparing the microporous air guide plate according to the present invention;
in the figure 1, 1 is a hollow graphite plate, 2 is a micropore air guide plate, and 3 is an ultrathin carbon/carbon composite material blank.
Detailed Description
Example 1:
referring to the attached figure 2, the fixture for preparing the ultrathin carbon/carbon composite panel is characterized in that a hollowed-out graphite plate 1, a micropore gas guide plate 2, an ultrathin carbon/carbon composite blank 3, the micropore gas guide plate 2 and the hollowed-out graphite plate 1 are sequentially overlapped, and the hollowed-out graphite plates on two sides are clamped along the overlapping direction;
the thickness of the hollowed-out graphite plate 1 is 30mm, and the hollowed-out area accounts for 50% of the total area of the graphite plate; the thickness of the ultra-thin carbon/carbon composite material blank is 0.2mm, and the density of the carbon fiber is 0.8g/cm3；
Bolts penetrate through bolt holes formed in the hollowed-out graphite plate and are fastened by nuts.
The micropore air guide plate 2 is prepared by adopting the following scheme:
the thickness is 1mm, and the density is 0.03g/cm3The T700 carbon fiber net tire is needled to form a thickness of 3mm and a density of 0.3g/cm3The flat felt is subjected to chemical vapor carburization to be densified to 1.6g/cm3After hardening, graphitizing and machining to obtain a micropore air guide plate with the thickness of 1 mm;
the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The method comprises the steps of (1) taking carbon source gas, controlling the furnace temperature to be 1000 ℃ and the furnace pressure to be 1kPa, accumulating chemical gas phase carburization for 50 hours, and discharging;
the graphitization treatment system is as follows: controlling the atmosphere in the furnace to be 0.11-0.13MPa of argon, the temperature in the furnace to be 2000 ℃, the heat preservation time to be 2 hours, and cooling along with the furnace.
Placing a fixture for preparing the ultrathin carbon/carbon composite material panel in a chemical vapor deposition furnace for chemical vapor carburization and densification; the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The method comprises the steps of (1) taking carbon source gas, controlling the furnace temperature to be 1000 ℃ and the furnace pressure to be 1kPa, accumulating chemical gas phase carburization for 400 hours, and discharging;
the assembly sequence of the fixture structure for preparing the ultrathin carbon/carbon composite material panel is as follows: the method comprises the following steps of (1) hollowed-out graphite, a micropore gas guide plate, an ultrathin carbon/carbon composite material blank, a micropore gas guide plate and hollowed-out graphite, wherein the ultrathin carbon/carbon composite material blank is clamped between the two micropore gas guide plates;
the density of the ultrathin carbon/carbon composite material panel obtained after chemical vapor carburization and densification is 2.0g/cm3。
Example 2:
the difference between the embodiment and the embodiment 1 is that the thickness of the hollowed-out graphite plate 1 is 35mm, and the hollowed-out area accounts for 60% of the total area of the graphite plate; the thickness of the ultra-thin carbon/carbon composite material blank is 0.5mm, and the density of the carbon fiber is 0.5g/cm3；
The micropore air guide plate 2 is prepared by adopting the following scheme:
the thickness is 3mm, and the density is 0.03g/cm3The T700 carbon fiber net tire is needled to form a thickness of 8mm and a density of 0.2g/cm3The flat felt is subjected to chemical vapor carburization to be densified to 0.3g/cm3After hardening, graphitizing and machining to obtain a micropore air guide plate with the thickness of 6 mm;
the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The method comprises the steps of (1) taking carbon source gas, controlling the furnace temperature to be 1000 ℃ and the furnace pressure to be 3kPa, accumulating chemical gas phase carburization for 5 hours, and discharging;
the graphitization treatment system is as follows: controlling the atmosphere in the furnace to be 0.11-0.13MPa of argon, the temperature of the furnace to be 2300 ℃, the holding time to be 1h, and cooling along with the furnace.
Placing a fixture for preparing the ultrathin carbon/carbon composite material panel in a chemical vapor deposition furnace for chemical vapor carburization and densification; the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The method comprises the steps of (1) taking carbon source gas, controlling the furnace temperature to be 1100 ℃ and the furnace pressure to be 4kPa, accumulating chemical gas phase carburization for 300 hours, and discharging;
the density of the ultrathin carbon/carbon composite material panel obtained after chemical vapor carburization and densification is 1.8g/cm3。
Example 3:
the difference between the embodiment and the embodiment 1 is that the thickness of the hollowed-out graphite plate 1 is 40mm, and the hollowed-out area accounts for 55% of the total area of the graphite plate; the thickness of the ultra-thin carbon/carbon composite material blank is 0.8mm, and the density of the carbon fiber is 0.4g/cm3；
The micropore air guide plate 2 in the clamp is prepared by adopting the following scheme:
the thickness is 6mm, and the density is 0.03g/cm3The T700 carbon fiber net tire is needled to form a thickness of 12mm and a density of 0.1g/cm3The flat felt is subjected to chemical vapor carburization to be densified to 1.4g/cm3After hardening, graphitizing and machining to obtain a micropore air guide plate with the thickness of 10 mm;
the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The method comprises the steps of (1) taking carbon source gas, controlling the furnace temperature to be 1200 ℃ and the furnace pressure to be 10kPa, accumulating chemical gas phase carburization for 200 hours, and discharging;
the graphitization treatment system is as follows: controlling the atmosphere in the furnace to be argon gas of 0.11-0.13MPa, the temperature in the furnace to be 2100 ℃, the heat preservation time to be 2h, and cooling along with the furnace.
Placing a fixture for preparing the ultrathin carbon/carbon composite material panel in a chemical vapor deposition furnace for chemical vapor carburization and densification; the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The method comprises the steps of (1) taking carbon source gas, controlling the furnace temperature to be 1200 ℃ and the furnace pressure to be 6kPa, accumulating chemical gas phase carburization for 200, and discharging;
the density of the ultrathin carbon/carbon composite material panel obtained after chemical vapor carburization and densification is 1.7g/cm3。
Example 4:
the difference between the embodiment and the embodiment 1 is that the thickness of the hollowed-out graphite plate 1 is 45mm, and the hollowed-out area accounts for 50% of the total area of the graphite plate; the thickness of the ultra-thin carbon/carbon composite material blank is 0.4mm, and the density of the carbon fiber is 0.6g/cm3；
The micropore air guide plate 2 in the clamp is prepared by adopting the following scheme:
the thickness is 1mm, and the density is 0.03g/cm3The T700 carbon fiber net tire is needled to have the thickness of 5mm and the density of 0.2g/cm3The flat felt is subjected to chemical vapor carburization to be densified to 0.9g/cm3After hardening, graphitizing and machining to obtain a micropore air guide plate with the thickness of 3 mm;
the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The method comprises the steps of (1) taking carbon source gas, controlling the furnace temperature to be 1100 ℃ and the furnace pressure to be 6kPa, accumulating chemical gas phase carburization for 120h, and discharging;
the graphitization treatment system is as follows: controlling the atmosphere in the furnace to be 0.11-0.13MPa of argon, the temperature of the furnace to be 2300 ℃, the holding time to be 2h, and cooling along with the furnace.
Placing a fixture for preparing the ultrathin carbon/carbon composite material panel in a chemical vapor deposition furnace for chemical vapor carburization and densification; the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The method comprises the steps of (1) taking carbon source gas, controlling the furnace temperature to be 1100 ℃ and the furnace pressure to be 3kPa, accumulating chemical gas phase carburization for 380 hours, and discharging;
the density of the ultrathin carbon/carbon composite material panel obtained after chemical vapor carburization and densification is 1.9g/cm3。
Example 5:
when the prepared microporous air guide plate has the thickness of 12mm and the density of 1.7g/cm3When the carbon source gas is used, the size of micropores in the gas guide plate is reduced, part of micropores become closed pores, an effective carbon source gas channel cannot be formed, and the carbon source gas cannot be guided to the ultrathin carbon/carbon composite material panel for chemical vapor densification.
Example 6: when the prepared microporous air guide plate has the thickness of 0.5mm and the density of0.1g/cm3When the panel is used, the thickness of the air guide plate is thin, and the strength of the air guide plate is not enough to shape the ultrathin carbon/carbon composite panel; in addition, the micropore size in the air guide plate is large, so that effective shunting of carbon source gas cannot be formed, and uniform chemical vapor carburization of the ultrathin carbon/carbon composite material panel cannot be realized.
Claims (9)
1. A clamp for preparing an ultrathin carbon/carbon composite material panel comprises a hollowed-out graphite plate and a micropore air guide plate; the method is characterized in that: the fixture is characterized in that a hollowed-out graphite plate, a micropore gas guide plate, an ultrathin carbon/carbon composite material blank with the thickness of 0.2-0.8mm, the micropore gas guide plate and the hollowed-out graphite plate are sequentially superposed, and the hollowed-out graphite plates on two sides are clamped along the superposition direction; the thickness of the micropore air guide plate is 1-10mm, and the density is 0.3-1.6g/cm3And the initial carbon fiber density in the micropore air guide plate is less than that in the ultrathin carbon/carbon composite material blank.
2. The fixture for preparing the ultrathin carbon/carbon composite panel as claimed in claim 1, wherein: the thickness of the hollow graphite plate is 30-50mm, and the hollow area accounts for 40-60% of the total area of the graphite plate.
3. The fixture for preparing the ultrathin carbon/carbon composite panel as claimed in claim 1, wherein: the micropore air guide plate is prepared by adopting the following scheme:
needling the carbon fiber net tire into a flat felt, and carrying out chemical vapor carburization densification and hardening; then graphitizing and machining to obtain the micropore air guide plate.
4. The fixture for preparing the ultrathin carbon/carbon composite panel as claimed in claim 3, wherein: the flat felt formed by needling has a thickness of 3-12mm and a density of 0.1-0.3g/cm3；
The flat felt is densified to 0.3-1.6g/cm by chemical vapor carburization3；
And machining to 1-10mm after graphitization treatment.
5. The fixture for preparing the ultrathin carbon/carbon composite panel as claimed in claim 3, wherein: the carbon fiber net tire is T700, the thickness of the carbon fiber net tire is 1-6mm, and the density of the carbon fiber net tire is 0.01-0.03g/cm3。
6. The fixture for preparing the ultrathin carbon/carbon composite panel as claimed in claim 3, wherein: the parameters of the chemical gas phase carburizing densification process are as follows: with CH4The furnace temperature is controlled to be 1000-1200 ℃ and the furnace pressure is 1-10kPa as carbon source gas, and the chemical gas phase carburization is accumulated for 5-200h and then the carbon source gas is discharged.
7. The fixture for preparing the ultrathin carbon/carbon composite panel as claimed in claim 3, wherein: the graphitization treatment system is as follows: controlling the atmosphere in the furnace to be 0.11-0.13MPa, the furnace temperature to be 2000-2300 ℃, the heat preservation time to be 1-2h, and cooling along with the furnace.
8. The jig for manufacturing a panel of ultra-thin carbon/carbon composite material according to any one of claims 1 to 7, wherein: the hollowed-out graphite plates on the two sides are clamped along the superposition direction, and the hollowed-out graphite plates on the two sides are fastened by fasteners.
9. The jig for manufacturing ultra-thin carbon/carbon composite panels as claimed in claim 8, wherein: the fastener is a bolt and a nut, and the bolt penetrates through a bolt hole formed in the hollowed graphite plate and is fastened by the nut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811277737.2A CN109279908B (en) | 2018-10-30 | 2018-10-30 | Clamp for preparing ultrathin carbon/carbon composite material panel |
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| CN201811277737.2A CN109279908B (en) | 2018-10-30 | 2018-10-30 | Clamp for preparing ultrathin carbon/carbon composite material panel |
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| CN109279908A CN109279908A (en) | 2019-01-29 |
| CN109279908B true CN109279908B (en) | 2021-06-01 |
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Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944686A (en) * | 1974-06-19 | 1976-03-16 | Pfizer Inc. | Method for vapor depositing pyrolytic carbon on porous sheets of carbon material |
| JPH01145400A (en) * | 1987-11-30 | 1989-06-07 | Toshiba Ceramics Co Ltd | Jig for heating silicon wafer |
| JP2712698B2 (en) * | 1990-01-26 | 1998-02-16 | 三菱電機株式会社 | Method for producing C / C composite material by composite gas phase impregnation method |
| US5480678A (en) * | 1994-11-16 | 1996-01-02 | The B. F. Goodrich Company | Apparatus for use with CVI/CVD processes |
| FR2754813B1 (en) * | 1996-10-18 | 1999-01-15 | Europ Propulsion | DENSIFICATION OF POROUS SUBSTRATES DISPOSED IN ANNULAR CELLS BY CHEMICAL VAPOR INFILTRATION WITH TEMPERATURE GRADIENT |
| JP2003002756A (en) * | 2001-06-25 | 2003-01-08 | Mitsui Eng & Shipbuild Co Ltd | Method for producing fiber reinforced ceramics member |
| EP1503161A3 (en) * | 2003-08-01 | 2006-08-09 | Asahi Glass Company Ltd. | Firing container for silicon nitride ceramics |
| FR2882064B1 (en) * | 2005-02-17 | 2007-05-11 | Snecma Propulsion Solide Sa | PROCESS FOR THE DENSIFICATION OF THIN POROUS SUBSTRATES BY CHEMICAL VAPOR PHASE INFILTRATION AND DEVICE FOR LOADING SUCH SUBSTRATES |
| JP4842701B2 (en) * | 2006-05-11 | 2011-12-21 | シャープ株式会社 | Method for separating silicon carbide from silicon and apparatus used therefor |
| JP2008103589A (en) * | 2006-10-20 | 2008-05-01 | Tokyo Cathode Laboratory Co Ltd | Shower head for semiconductor processing apparatus and front-side electrode plate used in shower head of semiconductor processing apparatus |
| CN100564320C (en) * | 2007-09-13 | 2009-12-02 | 北京航空航天大学 | With charcoal nanofiber method of strengthening coal |
| CN101392366B (en) * | 2008-11-07 | 2010-08-11 | 中南大学 | Method for preparing rapid chemical vapor infiltration of carbon/carbon composite material flat plate |
| CN101412632B (en) * | 2008-11-13 | 2011-07-20 | 中南大学 | Preparation of carbon / carbon composite material heating element for polysilicon furnace |
| CN103044056B (en) * | 2013-01-10 | 2014-08-13 | 湖南南方搏云新材料有限责任公司 | Technology and equipment for preparing C/C composite |
| CN203487233U (en) * | 2013-09-29 | 2014-03-19 | 西安超码科技有限公司 | Tool for charcoal/charcoal throat lining CVI (Chemical Vapor Infiltration) treatment |
| CN203700516U (en) * | 2014-01-22 | 2014-07-09 | 西安航空制动科技有限公司 | Combined tooling for gas preheating and distributing |
| CN108558427B (en) * | 2018-05-22 | 2020-11-13 | 中南大学 | Method for batch preparation of carbon/carbon composite material flat plate with uniform density by using confined reactor |
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