Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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A Study on the Characteristics of Salt Spray Test of Roll Formed and Zn-Ni Electrodeposited Steel Bolts

전조 후 Zn-Ni 전기도금한 강 볼트의 염수분무 특성에 관한 연구

  • 보보무로드 (금오공과대학교 신소재시스템공학부) ;
  • 손요헌 (영신금속공업(주)) ;
  • 김인수 (금오공과대학교 신소재시스템공학부)
  • Received : 2012.07.06
  • Accepted : 2012.07.19
  • Published : 2012.08.01
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Abstract

Roll formed steel bolts are electrodeposited with Zn-Ni to protect themselves from corrosion. However, white storage stain or white rust(corrosion) is found on Zn-Ni electrodeposited surface of steel bolts when they are exposed to moisture. In this paper a new process is introduced to protect Zn-Ni electrodeposited steel bolt from white storage stain or white rust for a long time under the salt spray test and high humidity test conditions. The better corrosion resistance could be gotten by the additional process of Ni-P electroless deposition and heat treatment to conventional manufacturing method of Zn-Ni coated steel bolt. The corrosion resistance of Zn-Al powder slurry coated steel bolt showed better than that of Zn-Ni electrodeposited one.

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References

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