Proceedings of the Korean Institute of Surface Engineering Conference (한국표면공학회:학술대회논문집)

The Korean Institute of Surface Engineering (한국표면공학회)
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Characterization of Electro-deposited Chrome-Carbon Layer Prepared by Pulse Plating

펄스 전착된 크롬-카본 도금층의 특성

  • Lee, J.J. (Sunmoon University) ;
  • Lee, B.K. (Sunmoon University) ;
  • Y.S. Pyun (Sunmoon University) ;
  • Kim, Man (Korea Institute of Metals and machinery) ;
  • S.C. Kwon (Korea Institute of Metals and machinery)
  • Published : 2002.05.01
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Abstract

Effects of pulse-plating on the wear and corrosion resistance of chrome-carbon layers were studied. The plating were carried out at $06A/\textrm{cm}^2$ in modified Sargent bath containing formic acid at $53^{\circ}C$. The chrome layer were super-saturated with carbon up to 2.0wt. %, which precipitated as chrome carbide such as $Cr_{23}C_6$ after vacuum aging above $200^{\circ}C$ for 1 hour. This resulted in improvement of hardness and wear resistance of the chrome layer. Considering the reduction of corrosion resistance due to the thermal effect, optimum vacuum aging condition of the chrome layer in this study was I-hour at $200^{\circ}C$.

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