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3671 |
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Mo-Cu composites prepared by infiltrating copper into flame-sprayed porous Mo skeleton |
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Chang-Jiu Li* / Xi'an Jiaotong University, P.R. China Jian-Tao Yao / State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, China Hui-Bin Huo/ State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, China Guan-Jun Yang/ State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, China Cheng-Xin Li/ State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, China |
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Molybdenum copper composites combine the refractory properties of Mo with the high conductivity of Cu. For specific applications, a thermal expansion match is desired along with a high thermal conductivity, and it can be tailored by adjusting the relative amount of these constituents. In this paper, the porous molybdenum skeleton was fabricated through depositing semi-molten molybdenum particles by flame spraying and molybdenum-copper composites were produced by infiltrating a porous molybdenum skeleton with liquid copper. Molybdenum content in the composite was controlled by preparing porous molybdenum with different porosities. The effects of molybdenum skeleton porosity on properties of molybdenum-copper composite materials were investigated. The results indicate that the copper was densely infiltrated into the porous Mo deposit and the subsequent molybdenum-copper composite material exhibits a high thermal conductivity. |