대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제46권5호
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  • Pages.304-309
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  • 2008
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
권호 표지

Mg-5Al-2Si 합금의 조직 및 부식특성에 미치는 Sb, Sr 첨가의 영향

Effect of Sb and Sr Addition on Corrosion Properties of Mg-5Al-2Si Alloy

  • Jeon, Jongjin (School of Materials Science and Engineering, Pusan National University) ;
  • Lee, Sangwon (School of Materials Science and Engineering, Pusan National University) ;
  • Kim, Byeongho (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Bonggyu (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Yongho (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Ikmin (School of Materials Science and Engineering, Pusan National University)
  • 투고 : 2008.02.01
  • 발행 : 2008.05.22
⟨ 이전 논문 다음 논문 ⟩

초록

Magnesium alloys containing $Mg_2Si$ particles, as a promising cheap heat-resistant magnesium alloy for automobile power train parts applications, are attracting more attention of both material scientists and design engineers. Modification of the Chinese script shape $Mg_2Si$ particle is a key for using this alloy in sand or permanent mould casting. In the present work, the modification effect of Sr and Sb on the corrosion properties of the Mg-5Al-2Si alloy was investigated. Sr or Sb addition promoted the formation of fine polygonal shape $Mg_2Si$ particles by providing the nucleation sites. Sr was more effective element than Sb for shape modification of Chinese script shape $Mg_2Si$. Such improved microstructure of the modified alloy resulted in large improvement in corrosion resistance as compared to unmodified Mg-5Al-2Si alloy.

키워드

과제정보

연구 과제 주관 기관 : 과학기술부

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