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.
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.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2007年第2期108-112,共5页
Transactions of Beijing Institute of Technology
基金
北京理工大学基础研究基金资助项目(BIT-UBF-200502A4217)
关键词
Mo/Cu
FGM
自蔓延
高温合成
爆炸固结
性能表征
Mo/Cu FGM
self-propagating
high-temperature synthesis
explosive consolidation
performance characterization
