Articles
  • Preparation of copper-plated graphite powder, and the sintering behavior of its composite with copper
  • Pyo-Hyun Uk, Tae-Joo Chung and Hyukjae Lee*
  • Materials Research Center for Energy and Green Technology Andong National University Andong, Gyeongbuk 36729, Korea
Abstract
To reduce the inhomogeneity from density difference in copper-graphite composite, which is a material system for DC-motor brushes, copper is deposited on graphite surface via electroless plating, and then the copper-plated graphite mixed with pure copper powders is pressed and sintered to produce a final compact. Here, we identified the optimum electroless plating condition for a large amount of copper deposition, and used it to prepare composite powders with pure copper. We compared the sintering behavior of the copper-plated graphite/copper composite powder with that of pure graphite/copper composite powder. The results show that the copper-plated graphite/copper composite significantly enhanced the sinterability of the composite powder, along with the homogeneity of the sintered compact.

Keywords: DC-motor brush, Electroless plating, Copper, Graphite, Sintering, Composites

This Article

  • 2017; 18(6): 440-444

    Published on Jun 30, 2017

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