한국주조공학회

Metal foam is a class o f attractive materials, which exhibits unique combinations o f physical, mechanical, thermal, electrical and acoustic properties. In particular, it is light and good at absorbing energy, which makes it attractive in automotive and aerospace applications weight is critical. In this paper, the Mg alloy foam was prepared by melt foaming method by addition o f calcium as thickening agent, and TiH2 or CaC03 powder as blowing agent. The macrostructural observation o f foamed Mg showed that the pore structures o f Mg alloy foam made by CaC03 as blowing agent were much better than that o f foams made by TiH2 as blowing agent. In addition, this paper showed the possible reason o f fabrication magnesium alloy foam in proportion to blowing agent and the porosity range was about 40 to 76% as results value.

Foamed Mg alloy, Blowing agent, CaC03, Melt foaming method