Effects of Oxygen Content on the Properties of Ultra-High-Temperature Resistant Si-Al-C Fibers
Ultra-high-temperature resistant Si-Al-C fibers derived from polyaluminocarbosilane were prepared by the procedures of melt-spinning,air curing and heated at 1800℃.It was found that oxygen content in the cured fibers has great influences on the chemical composition of the Si-Al-C fibers and its crystalline behavior during sintering.When oxygen content of cured fibers was too high,crystallite grains in the fiber would grow up.Oxygen evolvement in the fiber during the preparation was studied in detail by chemical analysis.It was found that oxygen is liberated mainly as CO gas from 1300℃ to1600℃.
Si-Al-C fibers Ultra-high-temperature resistance Oxygen content
Zhao Dafang Li Xiaodong Wang Hao Zheng Chunman Wang Haizhe
Key Laboratory of New Ceramic Fibers and Composites,Institute of Aerospace and Materials Engineering,National University of Defense Technology,Changsha 410073,P.R.China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1774-1777
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）