Effect of cooling rate and composition on microstructures and properties of Zn-Mg alloys
The Zn-Mg alloys with Mg additions of 35％,40％ and 45％(mass fraction) were prepared by conventional casting method,with the aim to develop new biodegradable materials.The effects of cooling rate and composition on the microstructures,hardness and corrosion resistance were studied by XRD,SEM,microhardness and corrosion testing techniques.The corrosion behaviors of experimental alloys in simulated body fluids were analyzed.The results show that the amount of the petal-like MgZn2 phase decreases,as well as the hardness of the alloys,but that of the polygonal MgZn2 phase increases with the increase of Mg content when the cooling rate is constant.When the alloy composition is constant,the MgZn2 phase changes easily from petal-like to polygon,and the hardness decreases with the decrease of the cooling rate.
Zn-Mg alloys microstructure corrosion behavior
WANG Xiang LU Hong-mei LI Xin-lin LI Li ZHENG Yu-feng
Center for Biomedical Materials and Engineering,Harbin Engineering University,Harbin 150001,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）