In-situ synthesis of Cu-based composites by combustion reaction using Cu-Zr-BN powder mixtures
Tsuda Hiroshi; Mabuchi Hiroshi; Nakayama Yutaka
Abstract:The Cu-based composites are excellent candidates for applications that require high strength and good electrical conductivity. In the present study, using Cu-Zr-BN powder mixtures, Cu-matrix ceramic composites were made by the combustion reaction process, following sintering. As a result, Cu and Zr powders with BN powder reacted exothermically, and in-situ formed a mixture product which had a fine distribution of ZrB2 and ZrN particles in the Cu matrix. It was found that the composite materials obtained have good conductivity and high strength at both room and elevated temperatures. Therefore, the processing technique in the present investigation is of interest as a new process to make metal matrix composite materials. Key Words:Cu-based composite, Cu-Zr-BN system, in-situ synthesis, combustion reaction, ZrB2, ZrN