W–Cu Composite with High W Content Prepared by Grading Rounded W Powder with Narrow Particle Size Distribution |
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| Authors: | Zheng Chen Bingxue Li Qiao Zhang Xudong Hu Yi Ding Zhixiang Zhu Peng Xiao Shuhua Liang |
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| Institution: | 1.School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China; (B.L.); (Q.Z.); (X.H.); (P.X.);2.Shaanxi Province Key Laboratory of Electrical Materials and Infiltration Technology, Xi’an University of Technology, Xi’an 710048, China;3.State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Co. Ltd., Beijing 102209, China; (Y.D.); (Z.Z.) |
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| Abstract: | In this study, the W (10–20%)–Cu composites were simultaneously fabricated using commercial, graded commercial, and graded jet-milled W powder. The results show that the W–Cu composites prepared with the graded jet-milled W powders have the highest density and best comprehensive performance due to the combined effect of the particle gradation and jet-milling treatment. Particle gradation is employed to increase the packing density of powders, thereby increasing the relative density of the compressed W skeleton, and the rounded powder with narrow particle size distribution after jet-milling treatment is used to reduce the enclosed pores formed during the process of compacting and infiltration. W–Cu composites with a high density of 16.25 g/cm3 can be directly obtained by conventional compacting at a low pressure of 300 MPa and following infiltration. |
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| Keywords: | W– Cu composite high W content gradation jet milling infiltration |
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