Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Corrosion Behavior of AZ91 Magnesium Alloy

AZ91 마그네슘합금의 부식거동

  • Yim, Chang Dong (Light Metal Division, Korea Institute of Materials Science) ;
  • Kim, Young Min (Light Metal Division, Korea Institute of Materials Science) ;
  • Park, Sung Hyuk (Light Metal Division, Korea Institute of Materials Science) ;
  • You, Bong Sun (Light Metal Division, Korea Institute of Materials Science)
  • 임창동 (한국기계연구원 부설 재료연구소 경량금속연구단) ;
  • 김영민 (한국기계연구원 부설 재료연구소 경량금속연구단) ;
  • 박성혁 (한국기계연구원 부설 재료연구소 경량금속연구단) ;
  • 유봉선 (한국기계연구원 부설 재료연구소 경량금속연구단)
  • Received : 2011.03.22
  • Published : 2012.09.25
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Abstract

One of the barriers limiting wide applications of magnesium alloys to various industries is their poor corrosion resistance. The corrosion properties of AZ91 magnesium alloy, which is the most popular magnesium casting alloy, are affected by microstructural and environmental factors. The corrosion properties of AZ91 magnesium alloy are affected by the corrosion properties of ${\alpha}-Mg$ and ${\beta}$ phases, the volume fraction and distribution of ${\beta}$ phase and area ratio of ${\alpha}-Mg/{\beta}$ phases. The corrosion properties of AZ91 magnesium alloy under various environments also change according to the passivity of films and types of corrosion products formed on its surface. The corrosion resistance of the magnesium alloys can be improved by microstructural control through the addition of alloying elements and optimization of the production process.

Keywords

Acknowledgement

Supported by : 재료연구소

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