Oxidation Embrittlement Probe for Ceramic-Matrix Composites

Autor:	J. C. McNulty, Frank W. Zok, Anthony G. Evans, Fernando E. Heredia
Rok vydání:	1995
Předmět:	Aluminium oxides Materials science Composite number chemistry.chemical_element Ceramic matrix composite Oxygen Silicate chemistry.chemical_compound chemistry Materials Chemistry Ceramics and Composites Fiber Composite material Embrittlement Chemical decomposition
Zdroj:	Journal of the American Ceramic Society. 78:2097-2100
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.1995.tb08621.x
Popis:	A test method for probing oxidation embrittlement in ceramic-matrix composite has been devised and demonstrated for three composites: SiC/magnesium aluminosilicate, SiC/SiC, and SiC/Al{sub 2}O{sub 3}. The method identifies a pest temperature T{sub p}. The growth of an embrittled region from the surface, at T{sub p}, has been illustrated. The embrittlement mechanism involves oxygen ingress through matrix cracks and silicate formation at the fibers, causing fiber failure.
Databáze:	OpenAIRE
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