Volume 11, Issue 2, 2002

Preparation of High-temperature Resistant SiC Fibre with Low Content of Oxygen and Free Carbon

Feng Cao, Xiaodong Li1*, Wenyuan Wang1, Jun Wang1, and Yongcai Song1, Dong-pyo Kim2

1Key Lab of C.F.C, National University of Defense Technology, Changsha, 410073, P.R. China, E-mail: youlucky2000@yahoo.com 
2Department of Fine Chemical Engineering and Chemistry, Chungnam National University,  Taejon, 305-764, Korea

(Received 10/01; accepted 12/01)

*Author to whom correspondence should be addressed

Abstract

High-temperature resistant and fine diameter SiC fibre was prepared by a series of combined curing and sintering processes at 1800oC of  polyaluminocarbosilane fibre. Slight air curing avoids excessive oxygen incorporation, and subsequent thermal curing rendered the infusible green fibre for pyrolysis. It appears that Al content plays an important role when the fibre is fired at high temperature to remove oxygen and excess carbon.

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