P合金粉末を添加したMo圧粉体の焼結挙動

概要

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We studied sintering behaviour of Mo powder compacts with an addition of P alloy powders. The relative densities of Mo powder compacts remarkably rose when sintered at 1300°C with an addition of 1.0wt% Fe-P powder and sintered at 1200°C with an addition of 0.5wt% Ni-P powder. This sintering promotion was due to the existence of the liquid phase. This liquid phase was produced at lower temperature than that where the Mo powder compacts were sintered with an addition of Fe and Ni powders. The decomposition of the added P alloy powders in the Mo powder compacts occurred at the temperature where the liquid phase was produced.