Electroless deposition of copper onto alumina sub-micronic powders and sintering

This work has been initiated in order to find new routes for the preparation of 3D interconnected ceramic–metal composites, usually obtained by direct metal oxidation or liquid infiltration of a ceramic preform. The system under investigation is the alumina–copper system. The key point of this new r...

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Bibliographic Details
Published in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2002-01, Vol.33 (10), p.1387-1390
Main Authors: Silvain, J.F, Bobet, J.L, Heintz, J.M
Format: Article
Language:English
Subjects:
Al 2O 3–Cu
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Composite powders
Electroless process
Exact sciences and technology
Metals. Metallurgy
Miscellaneous
Other composite materials with one or more metallic components
Powder metallurgy. Composite materials
Production techniques
Sintering
Technical ceramics
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Summary:This work has been initiated in order to find new routes for the preparation of 3D interconnected ceramic–metal composites, usually obtained by direct metal oxidation or liquid infiltration of a ceramic preform. The system under investigation is the alumina–copper system. The key point of this new route was the preparation of very fine composite powders, which allowed the material to be densified by natural sintering. The first part of the presentation deals with the preparation of the composite powders, which was achieved using an electroless process. Influence of experimental parameters controlling the deposition of a copper layer on a sub-micronic alumina powder was investigated. The second part deals with the processing of the composite. A statistical design methodology was applied to determine the main parameters controlling the shrinkage. For some conditions, a new in situ Cu–CuAlO 2 composite is formed, which presents an interesting microstructure with CuAlO 2 acicular grains.
ISSN:1359-835X
1878-5840
DOI:10.1016/S1359-835X(02)00153-7