한국표면공학회지 (Journal of Surface Science and Engineering)

  • 제55권1호
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  • Pages.18-23
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  • 2022
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  • 1225-8024(pISSN)
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  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
권호 표지
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저탄소강의 크롬도금층 형성 및 내식성에 미치는 Na2MoO4 첨가의 영향

The effect of Na2MoO4 addition on the formation and corrosion resistance of Cr-electroplated layer of low carbon steel

  • 배기창 (부경대학교 금속공학과) ;
  • 김기욱 (부경대학교 금속공학과) ;
  • 김주호 (부경대학교 금속공학과) ;
  • 이정훈 (부경대학교 금속공학과)
  • Bae, Ki Chang (Department of Metallurgical Engineering, Pukyong Nationa University) ;
  • Kim, Kiwook (Department of Metallurgical Engineering, Pukyong Nationa University) ;
  • Kim, Juho (Department of Metallurgical Engineering, Pukyong Nationa University) ;
  • Lee, Junghoon (Department of Metallurgical Engineering, Pukyong Nationa University)
  • 투고 : 2022.02.24
  • 심사 : 2022.02.26
  • 발행 : 2022.02.28
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초록

Presence of cracks in electrodeposited hard chromium layer, which provide a path of corrosive media to steel substrate, is a serious issue in metal finishing with chromium electroplating. In this study, we added sodium molybdate in an electrolyte for chromium electroplating bath. 130g/L of sodium molybdate in Sargent bath for chromium electroplating causes a codepostion of molybdenum with chromium in a rage of 0.61 ~ 3.14 wt.%. The co-deposited molybdenum enhances the crystallinity of chromium layer, thus the hardness is slightly decreases by the addition of molybdate in electrolyte. However, due to the co-deposition of molybdenum, a crack-free chromium layer could be electrodeposited. Such crack-free chromium layer shows a significantly improved corrosion resistance.

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과제정보

이 논문은 부경대학교 자율창의학술연구비(2021년)에 의하여 연구되었음.

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