Yong-Jai Kwon, Makoto Kobashi,Naoyuki Kanetake and Takao Choh
Department of Materials Processing Engineering, School of Engineering, Nagoya University, Nagoya 464-8603
Bonding between a copper matrix composite and aluminum with the help of the heat of reaction was investigated. The copper matrix composite was synthesized by a combustion reaction between copper, titanium, and AlB12. The reaction between these elemental powders initiated at 1368 K, which was very close to the melting point of copper. As a result of the reaction, TiB2 particles were formed in Cu-Al alloy matrix. The defects (i.e. unbonded parts and/or cracks) at the interface between aluminum and copper matrix composites were reduced by increasing the mixture ratio of both titanium and AlB12 against copper. The formation of the defects at the interface was prevented by the insert of pure copper layer to the aluminum/Cu-composite interface.
(Received April 22, 1999; In Final form June 21, 1999)
combustion synthesis, copper, titanium diboride, composite, bonding, aluminum
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