열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제6권2호
  • /
  • Pages.89-97
  • /
  • 1993
  • /
  • 1225-1070(pISSN)
  • /
  • 2508-4046(eISSN)
한국열처리공학회 (The Korean Society for Heat Treatment)
권호 표지

Al2O3 분산 Zn-Co-Cr 전기도금강판의 제조조건 및 내식성에 관한 연구

A Study of Electroplating Conditions and Corrosion Resistance for Al2O3 Dispersed Zn-Co-Cr Electroplated Steel Sheets

  • 김상범 (대우조선 국민차 사업본부 기술 연구실) ;
  • 서수정 (성균관대학교 공과대학 금속공학과) ;
  • 박현순 (성균관대학교 공과대학 금속공학과)
  • Kim, S.B. (Research Div., Dae Woo Shipbuilding and Heavy Machinery, Ltd.) ;
  • Suh, S.J. (Dep.of Metallurgical Eng., Sung Kyun Kwan University) ;
  • Park, H.S. (Dep.of Metallurgical Eng., Sung Kyun Kwan University)
  • 발행 : 1993.06.30
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초록

An improvement in corrosion resistance of various types of Zn-coated steel sheets is thought to be possible with the addition of fine oxide powder to the coating. In this study the corrosion resistance of the $Al_2O_3$ dispersed Zn-Co-Cr electroplated steel sheet has been investigated and the results were as follows : The corrosion resistance of $Al_2O_3$ dispersed Zn-Co-Cr electroplated steel sheets was improved by increasing the contents of Co and Cr ions, and also $Al_2O_3$ powders in the bath because of the increased amount of Co, Cr and $Al_2O_3$ in deposits. In the $Al_2O_3$ dispersed Zn-Co-Cr electroplated steels sheet, the structure of deposits was changed from fine microstructure as observed in high Co containing deposits to coarse microstructure as in high Cr and $Al_2O_3$ containing deposits. By cold rolling of the $Al_2O_3$ dispersed Zn-Co-Cr electroplated steel sheets to about 2 percent, thr corrosion resistance was improved further.

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