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1. 发明专利

JPH05170577A METHOD FOR ANTI-OXIDIZING COATING OF CARBON FIBER REINFORCED CARBON COMPOSITE MATERIAL USING COATING METHOD 失效
公开(公告)号：JPH05170577A
公开(公告)日：1993-07-09
申请号：JP34318891
申请日：1991-12-25
申请人： KAWASAKI STEEL CO , KAWASAKI HEAVY IND LTD
发明人： HIRAMOTO JIRO , NAKAI SUSUMU , KANESHIRO TSUNEO , SAKAI AKIHITO , NAKAYAMA HIROTOSHI , MAEKAWA SHOJI , YAMAMOTO TATSUYA
IPC分类号： C04B35/83 , C04B35/52 , C04B41/50 , C04B41/87
摘要： PURPOSE:To provide technology of a method for inexpensive anti-oxidizing coating of C/C, not causing defects such as crack and release of anti-oxidizing coating film, having excellent productivity. CONSTITUTION:Si powder and oxide powder are mixed with a binder to give a kneaded material, which is applied to the surface of carbon fiber-reinforced carbon composite material and the coated composite material is heat-treated in an inert gas atmosphere at >= melting point of Si in an inert gas atmosphere to make the surface layer of the carbon fiber-reinforced carbon composite material into silicon carbide.

2. 发明专利

JPH05148062A PRODUCTION OF CARBON MATERIAL 失效
公开(公告)号：JPH05148062A
公开(公告)日：1993-06-15
申请号：JP30900691
申请日：1991-11-25
申请人： KAWASAKI STEEL CO , KAWASAKI HEAVY IND LTD
发明人： KANESHIRO TSUNEO , NAKAYAMA HIROTOSHI , SAKAI AKIHITO , MAEKAWA SHOJI , YAMAMOTO TATSUYA
IPC分类号： C04B35/52 , C04B35/83 , C04B41/85
摘要： PURPOSE:To readily uniform bulk density of a carbon material and to density the carbon material by packing a filter into voids of burned material caused in a production process of a carbon fiber reinforced carbon composite material. CONSTITUTION:A precursor of molded article of a carbon fiber reinforced carbon composite material is burnt to give a burnt material. A filler comprising powder and/or fibers is dispersed or suspended in a liquid. The filler-containing liquid is passed through the burnt material, sucked and/or pressurized to pack the filler into voids of the burnt material.

3. 发明专利

JPH0558730A HIGH STRENGTH RIBBED STRUCTURE OF CARBON FIBER REINFORCED CARBON COMPOSITE MATERIAL 失效
公开(公告)号：JPH0558730A
公开(公告)日：1993-03-09
申请号：JP21536791
申请日：1991-08-27
申请人： NAT SPACE DEV AGENCY , KAWASAKI HEAVY IND LTD , KAWASAKI STEEL CO
发明人： MATSUSHITA TADASHI , MITSUMA HIDEHIKO , KOBAYASHI TOMOYUKI , YAMAMOTO TATSUYA , SAKAI AKIHITO , MAEKAWA SHOJI , NAKAYAMA HIROTOSHI , TAKANO SHIGERU , URUNO TOMOYUKI , EBATO OSAMU , SAGA MITSUO , KANESHIRO TSUNEO
IPC分类号： C01B31/02 , C04B35/52 , C04B35/80 , C04B35/83
摘要： PURPOSE:To provide a high strength ribbed structure of a carbon fiber reinforced carbon composite material having a satisfactory shape without causing fissuring, cracking and deformation such as denting and warping during carbonization by burning. CONSTITUTION:When a ribbed structure of a carbon fiber reinforced carbon composite material is produced, a carbon fiber fabric with thermosetting resin having >=25% actual carbon ratio stuck as a binder by 10-50wt.% is used as a filter 2 at the root of the rib 1. Defects do not occur during burning and the structure can stably be produced.

4. 发明专利

JPH01320152A CARBON FIBER REINFORCED CARBON MATERIAL 失效
公开(公告)号：JPH01320152A
公开(公告)日：1989-12-26
申请号：JP15268788
申请日：1988-06-21
申请人： KAWASAKI STEEL CO , KAWASAKI HEAVY IND LTD
发明人： HASEGAWA KAZUHIRO , KANESHIRO TSUNEO , ITO YOSHIJI , SAKAI AKIHITO
IPC分类号： B32B5/02 , B32B17/02
摘要： PURPOSE:To enable to obtain a carbon fibre reinforced carbon material with an extremely excellent heat resistance, anticorrosion and specific intensity by coating the inner layer of a silicon carbide covering film containing metallic silicon on the surface of a carbon fibre reinforced carbon material basement, and further coating the outer layer of a silicon carbide covering film on the inner layer. CONSTITUTION:A C/C composit (carbon fibre reinforced carbon material) is buried into metallic silicon powder, and reacted under the inactive gas atmosphere at the temperature of melting point or more of the metallic silicon so as to make the surface layer part of the C/C composit to be a silicon carbide. Moreover, by adding silicon carbide, alumina, boric acid and the like beside the metallic silicon powder, the content of unreacted metallic silicon into the silicon carbide covering film is made to be 1-35wt.% relative to the silicon carbide, and the film thickness of the silicon carbide film is made to be 45-700mu. Furthermore, on the silicon carbide covering film 2 of the first layer of the C composite, the silicon carbide film 3 of an outer layer is covered by CVD method.

5. 发明专利

JPS63209837A HIGH-TEMPERATURE HEAT-INSULATING STRUCTURE MATERIAL 失效
公开(公告)号：JPS63209837A
公开(公告)日：1988-08-31
申请号：JP4391787
申请日：1987-02-25
申请人： KAWASAKI STEEL CO , KAWASAKI HEAVY IND LTD
发明人： EBATO OSAMU , TAKANO SHIGERU , KANESHIRO TSUNEO , HASEGAWA KAZUHIRO , TSUCHITANI NOBUO , NAKAI MICHIO , ITO YOSHIJI , KIYOSHIGE MASANORI
IPC分类号： B32B5/18 , B32B17/02 , B32B18/00 , C04B35/83 , C04B38/00

6. 发明专利

JPH0648830A PRECURSOR FOR CARBON FIBER-REINFORCED CARBON COMPOSITE MATERIAL 失效
公开(公告)号：JPH0648830A
公开(公告)日：1994-02-22
申请号：JP20111892
申请日：1992-07-28
申请人： KAWASAKI STEEL CO
发明人： URUNO TOMOYUKI , TAKANO SHIGERU , KANESHIRO TSUNEO
IPC分类号： C04B35/83 , C04B35/52 , C04B35/80
摘要： PURPOSE:To prevent swelling or interlayer peeling by interposing specified thermoplastic resin nets in carbon fiber cloth and/or sheets impregnated with a thermosetting resin and then molding. CONSTITUTION:A carbon fiber cloth such as PAN carbon fiber, and/or a carbon sheet with fiber oriented in one direction is dipped in a thermosetting resin binder such as phenol resin and dried to produce a resin-impregnated carbon fiber cloth. Then, sheets of this resin-impregnated carbon fiber cloth and thermoplastic resin nets such as PP resin are alternately laminated to specified number of layers to obtain the precursor of the carbon fiber-reinforced carbon composite material. The thermoplastic resin net has the fiber diameter of 3-6 times as that of the carbon fiber and the net opening is 2/3 to 3/2 of the fiber bundle width. The thermoplastic resin has the melting temp. higher than the hardening temp. of the thermosetting resin and has the decomposition tap. lower than the decomposition temp. of the thermosetting resin. This precursor is slowly heated from just above the melting temp. to just below the decomposition temp. of the thermoplastic resin and calcined in a N2 atmosphere to obtain a high- strength carbon fiber-reinforced carbon composite material.

7. 发明专利

JPH05186286A OXIDATION RESISTANT COATING METHOD OF CARBON MATERIAL 失效
公开(公告)号：JPH05186286A
公开(公告)日：1993-07-27
申请号：JP66992
申请日：1992-01-07
申请人： KAWASAKI STEEL CO
发明人： HASEGAWA KAZUHIRO , NAKAI SUSUMU , KANESHIRO TSUNEO
IPC分类号： C04B35/52 , C04B41/52 , C04B41/87
摘要： PURPOSE:To readily convert even a material having large graphitization degree and form an oxidation resistant film by packing a gas reaction component forming substance around a carbon material and further packing a liquid reaction component forming substance in the circumference of the gas reaction component forming substance and heating these substances at a prescribed temperature. CONSTITUTION:A gas reaction component forming substance (SiO, a mixture of C with SiO2, etc.) 2 having 0.1-840mum particle diameter is packed around a carbon material 1. A liquid reaction component forming substance (Si or ceramic powder containing Si) 3 is packed further in the circumference of the gas reaction component forming substance. Then these substances are heated to 1800-2000 deg.C to generate SiO vapor from the substance 2 and thereby the interior and surface part of the carbon material 1 is formed into a SiC conversion layer 4. Then, temperature of is cooled to 1600-1800 deg.C and a new SiC layer 5 formed from the liquefied substance 3 is formed on the carbon material 1.

8. 发明专利

JPH0543364A OXIDATION-RESISTANT CORBON FIBER-REINFORCED CARBON COMPOSITE MATERIAL AND ITS PRODUCTION 失效
公开(公告)号：JPH0543364A
公开(公告)日：1993-02-23
申请号：JP20104791
申请日：1991-08-12
申请人： KAWASAKI STEEL CO
发明人： HIRAMOTO JIRO , HASEGAWA KAZUHIRO , KANESHIRO TSUNEO
IPC分类号： C04B35/83 , C04B35/52 , C04B35/80 , C04B41/87 , C04B41/89
摘要： PURPOSE:To prevent the lowering of the strength of the material in the diffusion reaction treatment by improving the oxidation resistance of a carbon fiber- reinforced carbon composite material by forming a silicon carbide coating layer by the diffusion method which is undely-known. CONSTITUTION:The pores of the surface of a carbon fiber-reinforced carbon composite material 1 are filled with thermally decomposed carbon 2, and a silicon carbide coating film 3 is formed by a diffusion method. If necessary, a ceramic coating 4 is formed on the carbon layer 2 by a CVD method and further coated with a glassy substance 5 to not only prevent the lowering of the strength but also further improve the oxidation resistance of the product.

9. 发明专利

JPH04305080A METHOD FOR COATING CARBON FIBER REINFORCED CARBON COMPOSITE MATERIAL WITH OXIDATION RESISTANT FILM BY APPLICATION 失效
公开(公告)号：JPH04305080A
公开(公告)日：1992-10-28
申请号：JP6652891
申请日：1991-03-29
申请人： KAWASAKI STEEL CO
发明人： HIRAMOTO JIRO , NAKAI SUSUMU , KANESHIRO TSUNEO
IPC分类号： C04B41/87
摘要： PURPOSE:To improve the oxidation resistance of a carbon fiber reinforced carbon (C/C) composite material at a low cost with superior productivity. CONSTITUTION:Si powder kneaded with a binder is applied to the surface of a C/C composite material and heated at the m.p. of Si or above in an inert gaseous atmosphere to convert the surface layer of the composite material into a silicon carbide layer.

10. 发明专利

JPH03177358A CARBON FIBER-REINFORCED CARBON COMPOSITE MATERIAL AND ITS PRODUCTION 失效
公开(公告)号：JPH03177358A
公开(公告)日：1991-08-01
申请号：JP31609889
申请日：1989-12-05
申请人： KAWASAKI STEEL CO
发明人： HASEGAWA KAZUHIRO , HIRAMOTO JIRO , KANESHIRO TSUNEO
IPC分类号： C04B41/87 , C04B35/52 , C04B35/83
摘要： PURPOSE:To provide the subject composite material having high strength and high oxidation resistance by forming a porous silicon carbide film on the surface of the subject composite material treated with silicon carbide for sealing and having a bulk density of >=a specified value and forming a chemical vapor deposition film of silicon carbide thereon. CONSTITUTION:Pore parts 2' of a carbon fiber-reinforced carbon composite material (C/C composite) 1 are impregnated with silicon carbide 2 preferably by the chemical vapor deposition method to make its bulk density >=1.85g/cm . The above impregnated composite material is used as a substrate and the surface part of the substrate is subjected to the diffusion reaction method for conversion into silicon carbide so as to form a porous silicon carbide layer 3 followed by further formation of a silicon carbide layer 4 thereon using the chemical vapor deposition method. If the bulk density of the above-mentioned substrate is , diffusion of the Si source for formation of silicon carbide into the central part of the C/C composite 1 during the diffusion reaction process can not be prevented effectively. In addition, the above-mentioned layer (modified layer) 3 can relieve thermal stress produced by the difference between the thermal expansion coefficient of the layer 4 and that of the C/C composite material 1.

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