Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Oxidation behavior of CaO added Mg and Mg-Al alloys

CaO을 첨가한 Mg 및 Mg-Al 합금의 산화거동

  • Ha, Seong-Ho (Adv. Mater. Div., Korea Institute of Industrial Technology) ;
  • Lee, Jin-Kyu (Adv. Mater. Div., Korea Institute of Industrial Technology) ;
  • Jung, Seung-Boo (Dept. of Adv. Mater. Eng., Sungkyunkwan Univ.) ;
  • Kim, Young-Jig (Dept. of Adv. Mater. Eng., Sungkyunkwan Univ.) ;
  • Jo, Hyung-Ho (Adv. Mater. Div., Korea Institute of Industrial Technology) ;
  • Kim, Shae-K. (Adv. Mater. Div., Korea Institute of Industrial Technology)
  • Published : 2007.05.20
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Abstract

Oxidation behavior of CaO added Mg and Mg-5Al alloys was investigated. At $500^{\circ}C$, oxidation rate of pure Mg was abruptly increased, while that of CaO added Mg was remarkably reduced with increasing CaO content. As a result of surface analysis by AES, there was the thin oxide layer mixed with MgO and CaO in CaO added Mg. Oxidation behavior of CaO added Mg was similar to that of Ca added Mg. Oxidation rate of 0.6CaO added Mg-5Al alloy was much lower than that of Mg-5Al alloy at $500^{\circ}C$ and both alloys showed the linear weight change at $400^{\circ}C$.

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References

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