Abstract
A near-stoichiometric SiC-based fibre containing ∼2 wt% aluminum, called SiC(Al) fibre, has been developed. SiC(Al) fibre can be obtained from an organometallic polymer precursor polyaluminocarbosilane by melt-spinning, oxidation curing, sintering at 1800°C in argon. SiC(Al) fibre was characterised by elemental chemical analysis, tensile test, Scanning electron microscopy, X-ray diffraction and Auger electron spectroscopy. Physical and mechanical properties of SiC(Al) fibre under thermal exposure, oxidation resistance and creep properties at elevated temperature were examined. The SiC(Al) fibre has more excellent oxidation resistance than Nicalon, Hi-Nicalon fibre and better creep resistance than the Tyranno SA fibre.
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