UNSPECIFIED (1999) The evaluation of novel interphases for oxide-oxide ceramic matrix composites. In: Annual Ceramic Convention Symposium on Engineering with Ceramics, APR 21-22, 1998, CIRENCESTER, ENGLAND.

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Abstract

Stoichiometric MXO4 type compounds, where M represents a rare earth or yttrium ion and a pentavalent cation, have been prepared using mixed oxide and liquid precursor methods. Their stability in relation to Al2O3, Mullite and yttrium-aluminium gamet (YAG) has been determined by examining interfaces exposed in reaction couples after heating to 1400 degreesC. Complex oxides of the phosphate and vanadate type are shown to possess the desired chemical stability with some of the candidate oxides and can be considered as suitable interphase materials. Close control over composition and homogeneity is shown to be important in determining their performance as potential interphases due to the possible formation of a liquid phase which can react readily with the oxide matrix or fibre. Selected MXO4 compounds have also been successfully deposited onto oxide substrates and woven oxide fibres using liquid precursors and RF-magnetron sputtering techniques, yielding controlled and uniform fibre coatings.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology
Series Name:	BRITISH CERAMICS PROCEEDINGS
Journal or Publication Title:	ENGINEERING WITH CERAMICS
Publisher:	IOM COMMUNICATIONS LTD
ISBN:	1-86125-087-8
ISSN:	0268-4373
Editor:	Lee, WE and Derby, B
Date:	1999
Number:	59
Number of Pages:	10
Page Range:	pp. 177-186
Publication Status:	Published
Title of Event:	Annual Ceramic Convention Symposium on Engineering with Ceramics
Location of Event:	CIRENCESTER, ENGLAND
Date(s) of Event:	APR 21-22, 1998
URI:	http://wrap.warwick.ac.uk/id/eprint/12699

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