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公开(公告)号：JPH03164415A
公开(公告)日：1991-07-16
申请号：JP30384889
申请日：1989-11-22
Applicant: AGENCY IND SCIENCE TECHN , SHIKISHIMA CANVAS KK
Inventor： IKEDA SHIGERU , ADACHI MASAKAZU , SHIOYAMA HIROSHI , TATSUMI KUNIAKI , FUJII ROKURO , TANAMURA TAKESHI
Abstract: PURPOSE:To produce a high strength three-dimensional fabric C-C composite capable of freely controlling the direction of heat conductivity by impregnating a carbon source into a three-dimensional fabric of carbon fibers having anisotropic heat conductivity as a reinforcing material and burning the carbon source. CONSTITUTION:A three-dimensional fabric of carbon fibers having arbitrary anisotropic heat conductivity is formed by using carbon fibers made from polyacrylonitrile, pitch, etc., and changing the constitution, orientation ratio and content. A carbon source is impregnated into the fabric, carbonized and graphitized by burning. Pitch, gaseous hydrocarbon or phenol resin may be used as the carbon source. The graphitizing temp. is properly selected within the range of about 1,200-3,000 deg.C. A C-C composite having superior mechanical strength and capable of freely controlling the direction of heat conductivity is obtd.
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Patent Agency Ranking2.发明专利
公开(公告)号：JPH01229874A
公开(公告)日：1989-09-13
申请号：JP5023488
申请日：1988-03-02
Applicant: AGENCY IND SCIENCE TECHN , SHIKISHIMA CANVAS KK
Inventor： IKEDA SHIGERU , SHIOYAMA HIROSHI , HORI SHOJI , ADACHI MASAKAZU , FUJII ROKURO , TANAMURA TAKESHI
IPC: D06M11/00 , C04B30/02 , D02G3/36 , D03D15/00 , D04B1/16 , D06M11/77 , D06M101/00 , D06M101/40
Abstract: PURPOSE:To improve physical properties such as antioxidation and mechanical strength of woven cloth by forming a silicon and/or silicon carbide coating film layer on the surface of yarn of woven and knitted cloth consisting of carbon fiber. CONSTITUTION:Woven and knitted cloth consisting of carbon fiber is maintained in vapor of silicon and/or silicon carbide, then heat-treated at 1,300-2,600 deg.C and the carbon fiber yarn is silicified to give the aimed woven and knitted cloth. For example, first Si is piled on the surface of the carbon fiber yarn and reacted with the carbon fiber yarn by the successive heat treatment to form an interfacial layer consisting of SiC between Si and C (type I). Coating films of types II, III and IV are formed by heating condition, heat-treating condition and retention time thereof. Physical properties of the woven and knitted cloth consisting of the silicon-carbon conjugated fiber thus obtained are improved and the woven and knitted cloth is useful as a reinforcing base material of composite material obtained by combining the woven and knitted cloth with ceramic (glass, etc.), metal (aluminum, etc.), etc.
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公开(公告)号：JPH04125107A
公开(公告)日：1992-04-24
申请号：JP24423790
申请日：1990-09-14
Applicant: AGENCY IND SCIENCE TECHN
Inventor： IKEDA SHIGERU , NARISAWA MASAKI , SOMA ISAO , ADACHI MASAKAZU , SHIOYAMA HIROSHI , TATSUMI KUNIAKI
Abstract: PURPOSE:To mold carbon powder including no volatile component into the desired shape without using a bonding material by feeding the carbon powder including no volatile content into a mold and retaining the same in a high-frequency induction oven or a graphite electric resistance oven for a given time under the given atmosphere, load and temperature. CONSTITUTION:Carbon powder prepared by coking coal or petroleum pitch, removing completely the volatile content to a substantial extent and pulverized carbon powder is fed into a proper molding tool and is set in a high-frequency induction oven. Then, a reaction device is vacuumized or turned into inactive gas atmosphere. 100-5000kg/cm load is applied from above the molding tool. After that, the temperature in the device is raised up to 1700-3000 deg.C. Also the retaining time for heat treatment is different for different sintering temperature, and usually is in the range of 1-100 minutes. A carbon product can be molded easily and at low cost by using an easily available raw material without requiring a special device.
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公开(公告)号：JPH0497962A
公开(公告)日：1992-03-30
申请号：JP21662090
申请日：1990-08-16
Applicant: AGENCY IND SCIENCE TECHN
Inventor： IKEDA SHIGERU , NARISAWA MASAKI , SOMA ISAO , ADACHI MASAKAZU , SHIOYAMA HIROSHI , TATSUMI KUNIAKI
IPC: C04B37/00
Abstract: PURPOSE:To maintain uniform joining strength between carbon materials over a wide temp. range and to prevent the exfoliation of the joined surfaces by interposing a metallic silicon sheet between the carbon materials and holding them in a flow of gaseous nitrogen under special conditions. CONSTITUTION:A metallic silicon sheet is interposed between carbon materials, 50-500kg/cm load is placed and they are heated to 1,400-1,900 deg.C at 100-250 deg.C/min rate in a flow of gaseous nitrogen under ordinary pressure and are held for 2-15 min.
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公开(公告)号：JPH0497960A
公开(公告)日：1992-03-30
申请号：JP21661990
申请日：1990-08-16
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ADACHI MASAKAZU , IKEDA SHIGERU , NARISAWA MASAKI , SOMA ISAO , SHIOYAMA HIROSHI , TATSUMI KUNIAKI
IPC: C04B37/00
Abstract: PURPOSE:To eliminate the pore in the bonding part and to attain sufficient bonding strength by interposing a carbonaceous powder free of volatiles between graphite and graphite and maintaining the assembly under specified conditions. CONSTITUTION:A carbonaceous powder free of volatiles is interposed between graphite and graphite, the assembly is heated to 1500-3000 deg.C in vacuum or in an inert gas atmosphere and maintained for 3-30min under the load of 100-2000kg/cm , and the graphite and graphite are bonded together. The carbonaceous powder free of volatiles to be used is obtained by carbonizing coal or petroleum pitch at 600-1800 deg.C to completely remove the volatiles and pulverizing the material to
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公开(公告)号：JPS62246888A
公开(公告)日：1987-10-28
申请号：JP4340486
申请日：1986-02-27
Applicant: AGENCY IND SCIENCE TECHN
Inventor： IKEDA SHIGERU , HORI SHOJI , OTSUKI SHINICHI , EGUCHI KIYOHISA , FUJII ROKURO
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