pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (26권3호 146-151)
Effects of CaO and Ca additions on Microstructure and Ignition Resistance of Pure Mg
Mg 의 미세조직과 발화저항성에 대한 CaO 및 Ca 의 영향
beong-Ho Ha *’** ，Jin-Kyu Lee *’** , Shae K. K im** , Seung-Boo Ju n g* ，Young-Jig K im*，and Hyung-Ho Jo**
*Sungkyunkwan Univ., **Korea Institute o f Industrial Technology
In this study, effects o f CaO and Ca addtions on microstructure and ignition resistance o f pure Mg were investigated. With increasing Ca and CaO contents, the grains in Ca and CaO added Mg were refined and ignition temperatures o f CaO and Ca added Mg increased, too. As a result o f phase analysis, CaO seemed to be reduced to Ca. Mg2Ca phase was formed even in 0.1 wt%CaO added pure Mg by reduction mechanism, while Mg2Ca phase was formed in over 1.35 wt% Ca added pure Mg. Thermodynamical consideration for the reduction mechanism o f CaO in pure Mg was carried out.
Mg, CaO, Ignition resistance, Mg2Ca phase.
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