pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (27권3호 126-130)
Oxidation behavior of CaO added Mg and Mg-Al alloys
CaO 을 첨가한 Mg 및 Mg-Al 합금의 산화거동
Seong-Ho Ha*, Jin-Kyu Lee*, Seung-Boo Jung, Young-Jig Kim, Hyung-Ho Jo*, Shae K. Kim*
Sungkyunkwan Univ., Korea Institute of Industrial Technology
Oxidation behavior of CaO added Mg and Mg-5A1 alloys was investigated. At 500°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 0.6CaC> added Mg-5A1 alloy was much lower than that of Mg-5A1 alloy at 500°C and both alloys showed the linear weight change at 400°C.
Mg, CaO, Oxidation resistance, Mg2Ca phase, A l2Ca phase.
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