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Microstructures and properties of resin carbon-coated graphite/copper composites
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Affiliation:

State Key Laboratory of Powder Metallurgy, Central South University

Clc Number:

TG146.1

Fund Project:

Eemu Forward-looking Technology Research Project of China (No. 2016J011-G), National Key Research and Development Program of China (No. 2016YFB0301403), Key Technology Improvement of EMU-Research on the Domestication of Carbon Contact Strip (No. 2017J008-M), National Natural Science Foundation of China (No. 51501228)

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    Abstract:

    According to the purposes of high properties of graphite/copper composites, resin carbon-coated graphite/copper composites were fabricated by using phenolic resin-coated graphite, electrolytic copper, silica as raw materials via traditional powder metallurgy method. The difference of the microstructures and properties compared with natural graphite/copper composites and copper-coated graphite/copper composites was researched. The results indicated that the structure of graphite can be protected through phenolic resin. Phenolic resin can break up the oxide layer on the Cu powder surfaces. The reduced Cu can accelerate the elements’ diffusion and sintering between the Cu particles and increase the sintering densification of the Cu matrix. Compare to the natural graphite/copper composites, the physical, mechanical and tribological properties of resin carbon-coated graphite/copper composites improved. The electrical conductivity, flexural strength, hardness are 9.87 MS·m-1, 81 MPa, 22 HV, respectively. These property values are equivalent to copper-coated graphite/copper composites, and tribological properties is a litter better than copper-coated graphite/copper composites.

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[xiao peng, Jiang Xu, zhu jiamin, Liu tan, fang hua chan. Microstructures and properties of resin carbon-coated graphite/copper composites[J]. Rare Metal Materials and Engineering,2019,48(10):3265~3274.]
DOI:10.12442/j. issn.1002-185X.20180426

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History
  • Received:April 26,2018
  • Revised:May 18,2018
  • Adopted:May 21,2018
  • Online: November 01,2019
  • Published: