Development of Sic fiber for composite materials

1987 Fiscal Year Final Research Report Summary

• Project/Area Number: 61850128
• Research Category: Grant-in-Aid for Developmental Scientific Research
• Allocation Type: Single-year Grants
• Research Field: 金属材料(含表面処理・腐食防食)
• Research Institution: University of Tokyo
• Principal Investigator: OKURA Akimitsu Prof. Institute of Industrial Science, Univ. of Tokyo, 生産技術研究所, 教授 (90013151)
• Co-Investigator(Kenkyū-buntansha): 萩原 茂示 三菱化成・株式会社 ; HONDA Kouich Technical expert Institute of Industrial Science, Univ. of Tokyo, 生産技術研究所, 教務技官 (80092328) ; CHO Toshoku Assistant Institute of Industrial Science, Univ. of Tokyo, 生産技術研究所, 助手 (90092270) ; HAGIHARA Shigeji Mitsubishi Chemistry
• Project Period (FY): 1986 – 1987
• Keywords: Sic fiber / Composite / 表面構造 / 結晶構造

Research Abstract

The use of ceramics for high temperature applications is receving increasing attention as the operating requirements for heat engines, such as gas turbines are constantly increased. SiC is formed by infiltrating carbonaceous material with molten Si invacuum ( 10^<-2> torr) at temperature ranging from 1550 to 1600゜C and times of the oder of 5 min.
Temperature history is determined in part by the fact that the reaction between c and molten Si is exothermic. The C can be present in the form of fiber tow, which are commerci- ally available. For reasonably high strength material, low modulus C fibers are generally used. During the infiltration process, the C fibers react with the Si to form polycrystalline - Sic.