Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Composition and Microstructure of Electroplated Zinc-Chromium Alloy according to Electrolysis Conditions

전해조건에 따른 아연-크롬합금 도금층의 조성 및 조직특성

  • 안덕수 (포항종합제철 기술연구소) ;
  • 김대영 (영남대학교 재료금속공학부) ;
  • 예길촌 (영남대학교 재료금속공학부)
  • Published : 2002.08.01
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Abstract

The composition and the microstructure of the Zn-Cr alloys electroplated in chloride bath with EDTA were studied according to electrolysis conditions. The cathode current efficiency decreased with increasing both Cr/(Cr+Zn) ratio and current density. The Cr content of the alloy deposits increased with Cr/(Cr+Zn) ratio and current density The phase structure of Zn-Cr alloy deposits changed from η-Zn through η-Zn+${\gamma}$'-ZnCr to ${\gamma}$'-ZnCr with increasing Cr content of alloys. The surface morphology of Zn-Cr alloy deposits changed from fine needle shaped crystallites through the mixed structure of needle-shaped and granular one to the colony structure with fine granular crystallites according to the change of phase structure

Keywords

References

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