可降解血管支架用Mg-2Y-xZn-0.4Zr合金腐蚀性能的研究
发布时间：2018-08-25 18:38
【摘要】：为了提高镁合金耐腐蚀性能,制备了血管支架用Mg-2Y-xZn-0.4Zr(x=0,1,2,4质量分数%)合金,采用光学显微镜、扫描电子显微镜、X射线衍射仪、失重等方法研究了四种合金在模拟人体体液(SBF溶液)中的腐蚀性能。结果表明,Zn元素的加入使得合金晶粒细化,1%的Zn元素加入后合金出现Mg_3YZn_6相,当Zn含量提高到2%时出现Mg_3Y_2Zn_3相,合金耐腐蚀性能先提高后降低。Mg-2Y-1Zn-0.4Zr合金展现出最佳的耐腐蚀性能。
[Abstract]:In order to improve the corrosion resistance of magnesium alloys, Mg-2Y-xZn-0.4Zr (xn0OO1O2O4% by mass fraction) alloy for vascular stent was prepared. The alloy was characterized by optical microscope and scanning electron microscope (SEM) X-ray diffractometer. The corrosion behavior of four alloys in simulated human body fluid (SBF solution) was studied by weightlessness and other methods. The results show that the addition of Zn element makes the Mg_3YZn_6 phase appear after the addition of 1% Zn element, and the Mg_3Y_2Zn_3 phase appears when the content of Zn increases to 2%. The corrosion resistance of the alloy first increases and then decreases. Mg-2Y-1Zn-0.4Zr alloy shows the best corrosion resistance.
【作者单位】： 太原理工大学材料学院;先进镁基材料山西省重点实验室;
【基金】：国家自然科学基金资助项目(51574175;51474153)
【分类号】：R318.08;TG146.22
本文编号：2203756
[Abstract]:In order to improve the corrosion resistance of magnesium alloys, Mg-2Y-xZn-0.4Zr (xn0OO1O2O4% by mass fraction) alloy for vascular stent was prepared. The alloy was characterized by optical microscope and scanning electron microscope (SEM) X-ray diffractometer. The corrosion behavior of four alloys in simulated human body fluid (SBF solution) was studied by weightlessness and other methods. The results show that the addition of Zn element makes the Mg_3YZn_6 phase appear after the addition of 1% Zn element, and the Mg_3Y_2Zn_3 phase appears when the content of Zn increases to 2%. The corrosion resistance of the alloy first increases and then decreases. Mg-2Y-1Zn-0.4Zr alloy shows the best corrosion resistance.
【作者单位】： 太原理工大学材料学院;先进镁基材料山西省重点实验室;
【基金】：国家自然科学基金资助项目(51574175;51474153)
【分类号】：R318.08;TG146.22
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