Effect of RE Elements Addition on Corrosion Behavior of Mg-Zn-Ca Amorphous Alloys for Biomedical Applications

摘要

The effects of rare earth (RE) elements (La, Y) addition on thermal stability and corrosion behavior of Mg_(68)Zn_(28)Ca_4 amorphous alloys were investigated in this paper. The results showed that the investigated Mg-Zn-Ca-RE amorphous alloys exhibited good thermal stability and enhanced corrosion resistance. The enhanced corrosion resistance of the RE-containing amorphous alloys is owing to the enrichment of the Zn and RE elements in the oxide layer. The corrosion resistance was further improved with the increasing of RE content.