Evaluation of Mechanical Properties of Ceramic Coating Layers with Nano-sized Silicon Oxides on a Steel Sheet

  • Baik, Youl (Department of Materials Science and Engineering, Dankook University) ;
  • Kang, Bo K. (Department of Materials Science and Engineering, Dankook University) ;
  • Choi, Yong (Department of Materials Science and Engineering, Dankook University) ;
  • Yang, So E. (Hankook Coating Co.) ;
  • Lee, Jong J. (Hankook Coating Co.) ;
  • Kim, Byung D. (Hankook Coating Co.)
  • Published : 2013.05.30

Abstract

A ceramic coating material with nano-sized silicon oxide on AISI 4340 steel for a thermal conductor at a high temperature was analyzed to find an optimum coating process. Average surface roughness of the coating layers prepared by dipping process was about $5.26{\mu}m$. Potassium silicate addition as a binder of the coating material tended to improve its hardness. A pencil scratch hardness testing showed that a loading more than 800 g made fragments of the coating layer.

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