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以Mg-6%Zn合金为基体、β-Ca3(PO4)2为强化相,采用粉末冶金工艺制备Mg-6%Zn-10%(β-Ca3(PO4)2)复合材料.利用光学显微镜观察复合材料的显微组织,采用X射线衍射仪分析相组成,采用压缩试验评估复合材料力学性能,采用动电位极化法和浸泡实验研究复合材料在模拟体液(SBF)中的腐蚀行为.结果表明:β-Ca3(PO4)2在烧结过程中与基体合金没有发生明显反应;复合材料密度为1.936g/cm3,压缩强度为339 MPa,弹性模量为24GPa;添加β-Ca3(PO4)2可降低Mg-6%Zn在SBF中的腐蚀速度;Mg-6%Zn-10%(β-Ca3(PO4)2)复合材料在SBF中的电化学腐蚀速度为2.277 mm/y,浸泡30 d的浸泡腐蚀速度为2.133 mm/y,SBF的pH值随着浸泡时间的延长而上升,最终稳定在10.

参考文献

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