Biocompatible magnesium alloys offer great potential as absorbable implant materials. In this study, biocompatable Ca and Zn elements were selected as the alloying element by investigating the effect of certain elements on biology and metallurgy. On the basis of numerous reading of literatures, the alloys with same component of Ca and different component of Zn were designed and prepared. Then heat treatment and surface modification by implanting Ti and Zr ions were carried out on the alloys. The mechanical ...