Mullite alumina particulate composites by infiltration processing : II, infiltration and characterization

DOI	Resolve DOI: https://doi.org/10.1111/j.1151-2916.1990.tb04266.x
Author	Search for: Marple, Basil R.; Search for: Green, David J.
Format	Text, Article
Abstract	Mullite/alumina composites were fabricated by infiltrating porous alumina preforms with a hydrolyzed ethyl silicate sol. Evidence is presented which suggests that initial infiltration occurred without complete filling of the porosity by the sol. Multiple infiltrations were used to increase the amount of SiO₂ introduced but led to blockage of the pores in the surface of the preform. Sintered bodies had concentration gradients, SiO₂ decreasing from the surface inward. Although mullite limited grain growth in alumina, in partially modified bodies large grains (>1 mm) with a preferred orientation were observed at the interface between the two zones
Publication date	1990-12-31
Publisher	Wiley
In	Journal of the American Ceramic Society 73, no. 12: 3611–3616.
Language	English
Peer reviewed	Yes
NRC publication	This is a non-NRC publication "Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.
NRC number	CNRC 33349 NRC-IMI91AP-20200-1207G
NPARC number	23004500
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Record identifier	803a0d69-a872-4f8c-b696-3eabf48dfbed
Record created	2018-11-09
Record modified	2020-03-17