Ceramic-Metal Composite Produced by Melt Infiltration

A new ceramic‐metal composite with continuous interconnected ceramic and metal phases has been fabricated from sintered aluminum nitride infiltrated with aluminum metal. A dense, lightweight, hard material with high strength has been obtained. Advance of the infiltration front was linear with time....

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1990-01, Vol.73 (1), p.97-101
Main Authors: Toy, Cetin, Scott, William D.
Format: Article
Language:English
Subjects:
aluminum nitride
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
composites
Exact sciences and technology
microstructure
Miscellaneous
processing
wetting
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Summary:A new ceramic‐metal composite with continuous interconnected ceramic and metal phases has been fabricated from sintered aluminum nitride infiltrated with aluminum metal. A dense, lightweight, hard material with high strength has been obtained. Advance of the infiltration front was linear with time. The activation energy of the process was very high (330 kJ/mol), suggesting that a chemical interaction rather than viscous flow was rate‐controlling. The infiltration rate was observed to be inversely proportional to the pore size. Thermal and mechanical properties of the composite were promising.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1990.tb05097.x