The stability of LaNi5 in a Cu matrix |
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Authors: | D Moreno C A F Manwaring I R Harris |
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Affiliation: | (1) NRCN, POB 9001, Beer-Sheva, Israel;(2) School of Metallurgy and Materials, University of Birmingham, B15 2TT, UK |
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Abstract: | The reaction of LaNi5 with Cu powder during sintering at high temperature was examined in order to obtain better conductivity and ductility. Pressurized and forged copper-LaNi5 pellets were investigated by optical metallography, DTA, XRD and TEM. The need for heat treatment after pressing and/or forging is vital to obtain good diffusion bonding between the copper particles and to improve the material strength. No interaction between La, Ni and Cu were observed after heating at 1173 K but a very stable La2O3 phase was created around the LaNi5 particle. Rolling up to 85% reduction showed good ductility. |
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