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Oxidation‐Induced Microstructural Change of Si‐Ti‐C‐O Fibers
Author(s) -
Kakimoto Kenichi,
Shimoo Toshio,
Okamura Kiyohito
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02348.x
Subject(s) - materials science , molar ratio , fiber , microstructure , chemical composition , chemical engineering , composite material , mineralogy , chemistry , catalysis , biochemistry , organic chemistry , engineering
Two types of Si‐Ti‐C‐O fibers STC(6HS) and STC(6H), with different C/Si molar ratios of 0.99 and 1.65, respectively, have been subjected to oxidation tests at high temperatures between 1000° and 1500°C. Both fibers showed different mass gain during the oxidation tests. In the unoxidized region, there was no change in the chemical composition. For STC(6HS), coarse ß‐SiC grains were formed throughout the region, while the grain coarsening in STC(6H) was restricted to the vicinity of the film/fiber interface. In this paper, the influence of free carbon on the oxidation‐induced microstructural change of Si‐Ti‐C‐O fibers is discussed.