Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Effects of Ni Addition on the Precipitate Formation and Interfacial Reaction in Hot Dipped Galvanizing Bath

Ni 첨가된 용융아연 도금욕의 석출물과 계면반응

  • Lee, K. K. (Dept. of Advanced Material Engineering, Hanlyo University) ;
  • Choi, J. (Dept. of Advanced Material Engineering, Hanlyo University) ;
  • Cho, K. Z. (School of Automative Engineering, Chonnam National University) ;
  • Lee, D. J. (Dept. of Metallurgical Engineering, Chonnam National University)
  • 이경구 (한려대학교 신소재공학과) ;
  • 최전 (한려대학교 신소재공학과) ;
  • 조규종 (전남대학교 공과대학 자동차공학부) ;
  • 이도재 (전남대학교 공과대학 금속공학과)
  • Published : 2001.06.01
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Abstract

The purpose of this study is to determine the effects of Ni on precipitate formation in a Ni added galvanizing bath, which has various Ni content from 0.03wt.% to 0.5wt.%. The addition of hi in the Ni containing galvanizing bath resulted in the formation of Al-Ni intermetallic compounds such as $Al_3$$Ni_2$ and $Al_2$Ni, which make up most of the top precipitates. At 0.07wt.%Ni, Al-Ni intermetallic compound formed sensitively with small amount of Al addition. By analysing the reaction thickness of galvanized steel, it was found that Ni addition in a Zn-0.18w1.%Al bath tended to suppress the formation of Fe-Zn intermetallic compounds but the formation of these compounds increased with increasing Ni concentration above 0.1wt.%.

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