自蔓延预热粉体爆炸固结Mo/Cu FGM
Combustion Synthesis Assisted Explosive Consolidation of Mo/Cu FGM
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摘要: 采用新型水介质双向爆炸固结装置,结合自蔓延预热粉体技术制备了Mo/Cu功能梯度材料(FGM).观测了Mo/Cu FGM的显微结构,分析了爆炸固结机制.所制备样品的相对密度从Mo层的94.2%到Cu层的98.4%,呈现良好的梯度变化,样品整体相对密度达95.5%.Mo/Cu FGM电导率为国际退火铜标准(IACS)的27%.第3层、第4层的热导率分别为204.76和249.71 W.m-1.K-1.Mo/Cu FGM第1层与第2层的剪切强度为214.8 MPa.Abstract: Mo/Cu FGM was prepared by bidirectional affused explosive consolidation assemblies associated with self-propagation high-temperature synthesis.The microstructure of Mo/Cu FGM was observed by SEM and the mechanism of explosive consolidation discussed.The relative density of layers in Mo/Cu FGM changed from Mo layer 94.2% to Cu layer 98.4%.The relative density of integral Mo/Cu FGM arrived at 95.5%.The electric-conductivity coefficient of Mo/Cu FGM attained 27% international annealed copper standard(IACS),and the thermal-coefficient of third and fourth layer were 204.76 and 249.71?W·m-1·K-1 respectively.Between the first layer and second layer of Mo/Cu FGM it showed a shearing strength of 214.8?MPa.
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