超高压力下通电烧结制备钼铜合金

Fabrication of Mo-Cu alloys by resistance sintering under ultra-high pressure

采用超高压力下通电烧结技术制备了铜体积分数25%～75%的钼铜合金材料.烧结压力2～10GPa,通电功率15kW,通电时间65s.分析了不同成分和制备工艺参数的钼铜合金显微形貌及力学性能.结果表明,所制备的钼铜合金材料结构致密,力学性能优越,而且超高压力下通电烧结技术能有效地避免晶粒长大和组织偏析.

Resistance sintering under ultra-high pressure was developed to fabricate Mo-Cu alloys containing copper of 25 % - 75 % in volume fraction. Consolidation was carried out under pressures of 2 - 10 GPa and an input power of 15 kW for 65 s. The densification effect and mechanical properties of these Mo-Cu alloys were investigated. The results show that these composites have high density and their mechanical properties are well. It is concluded that resistance sintering under ultra-high pressure is one of the fabrication methods which can avoid inhomogeneous structure and abnormal grain growth.