Premium
Degradation Mechanisms of Silicon Carbide Fibers
Author(s) -
Johnson S.M.,
Brittain R.D.,
Lamoreaux R.H.,
Rowcliffe D.J.
Publication year - 1988
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.1151-2916.1988.tb05033.x
Subject(s) - vaporization , silicon carbide , materials science , ceramic , fabrication , chemical vapor deposition , degradation (telecommunications) , composite material , composite number , silicon , fiber , ceramic matrix composite , polymer , chemical engineering , nanotechnology , chemistry , metallurgy , engineering , medicine , telecommunications , alternative medicine , organic chemistry , pathology , computer science
The effects of high temperatures on polymer‐derived Nicalon and chemically vapor‐deposited (CVD) SiC fibers have been investigated by mass‐spectrometric vapor pressure studies and by SEM observations of exposed fibers. Vaporization is kinetically limited for both materials; the predominant species vaporizing from Nicalon is SiO, whereas CO predominates in vaporization of CVD SiC fibers. The inherent instability of Nicalon and other SiC fibers in contact with matrices must be considered in ceramic composite fabrication and use.