为了改善Mg-Ca二元生物镁合金的力学性能和体外降解性能,分别制备了Mg-Ca-Mn和Mg-Ca-Sr三元合金,比较了3种合金的显微组织、力学性能及在Hanks溶液中的降解性能.实验结果表明,Mg-Ca-Sr合金的力学性能和体外降解性能较好,抗拉强度为230MPa,析氢腐蚀速率为0.042 mL/(d·cm2).
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