High-temperature stability of low-oxygen silicon carbide fiber heat-treated under different atmosphere |
| |
| Authors: | T. Shimoo K. Okamura M. Ito M. Takeda |
| |
| Affiliation: | (1) Department of Metallurgy and Materials Science, College of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka, 599-8531, Japan;(2) Department of Metallurgy and Materials Science, College of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka, 599-8531, Japan;(3) Graduate Student, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka, 599-8531, Japan;(4) Nippon Carbon Co. Ltd., Shin-urashima-cho, Kanagawa-ku, Yokohama, Kanagawa, 221-0031, Japan |
| |
| Abstract: | The effects of heat-treating atmosphere on the thermal stability of low-oxygen silicon carbide fiber were investigated. Heat-treatment of EB-cured PCS fiber were conducted at 1573 K in argon, nitrogen or vacuum of 10–6 atm. Subsequently the fibers were exposed to 1873 K in argon. The strength of fibers were strongly influenced by the heat-treating atmosphere. When heat-treated in nitrogen, the fibers absorbed nitrogen. High-temperature exposure caused severe degradation of strength owing to the decomposition of silicon oxycarbonitride phase. When heat-treated in vacuum, the fiber surface was smooth and pore-free, minimizing the degradation of strength at high temperature. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
