Effect of nickel additions on the sintering and properties of biporous molybdenum-copper pseudoalloys

The addition of small amounts (1%) of nickel were sufficient to activate li quid-phase sintering and improve phase interface adhesion and the mechanica l properties of molybdenum-copper pseudoalloys with a complex bimodal pore structure. The pseudoalloys retained high porosity (up to 75%) after sinter ing. This was achieved by lowering the microporosity in the biporous materi als, thus decreasing the total amount of shrinkage which occurred during th e sintering process.