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以常用的AZ91镁合金为研究对象,通过对不同无机盐添加剂的极化曲线测试,采用化学转化膜的方法制备了一种AZ91镁合金复合转化膜,并用表面形貌定性和腐蚀电位定量的方法研究其耐腐蚀性能。结果表明:制备的硫酸铈与氟化钠转化膜具有良好的耐腐蚀性能。
The common AZ91 magnesium alloy is taken as the research object. A kind of AZ91 magnesium alloy composite conversion coating is prepared by the method of chemical conversion coating on the polarization curves of different inorganic salt additives. The method is characterized by surface morphology qualitative and corrosion potential quantification Study its corrosion resistance. The results show that the prepared cerium sulfate and sodium fluoride conversion coating have good corrosion resistance.