한국표면공학회지 (Journal of Surface Science and Engineering)

  • 제43권2호
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  • Pages.73-79
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  • 2010
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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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비크롬계 인산-과망간산 용액을 이용한 AZ31 마그네슘 합금의 산처리에 따른 화성 피막의 특성 평가

Characteristics Evaluation of Conversion Coating of Acid Pickling AZ31 Magnesium Alloy by a Chromium-Free Phosphate-Permanganate Solution

  • Kim, Myung-Hwan (Department of Chemical Engineering, Pukyong National University) ;
  • Kwag, Sam-Tag (Department of Industrial Chemistry, Pukyong National University) ;
  • Moon, Myung-Jun (Department of Industrial Chemistry, Pukyong National University)
  • 투고 : 2010.04.13
  • 심사 : 2010.04.29
  • 발행 : 2010.04.30
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초록

A chromium-free conversion coating for AZ31 magnesium alloy has been obtained by using a permanganatephosphate solution, which has been developed with acid pickling. Examination have been carried out on the conversion coatings for morphology, composition and corrosion resistance. The morphology of the conversion-coated layer was observed using optical microscope and SEM. It was shown that the conversion coatings are relatively uniform and continuous, with thickness 1.8 to 2.7 ${\mu}m$. The chemical composition of conversion coating was mainly consisted of Mg, O, P, K, Al and Mn by EDS analysis. It was found that the corrosion resistance of the AZ31 magnesium alloy has been improved by the permanganate-phosphate conversion treatment from electrochemical polarization.

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참고문헌

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피인용 문헌

  1. Characteristics of Conversion Coating of AZ31 Magnesium Alloy Formed in Chromium-Free Cerium-Based Solution vol.49, pp.1, 2016, https://doi.org/10.5695/JKISE.2016.49.1.62
  2. A Blade-Abrading Method for Surface Pretreatment of Mg Alloys vol.48, pp.5, 2015, https://doi.org/10.5695/JKISE.2015.48.5.194