张西璐,杜华云,安艳丽,刘宝胜,卫英慧,侯利锋,郭春丽

• 1:太原理工大学材料科学与工程学院
• 2:山西医科大学基础医学院
• 3:太原科技大学材料科学与工程学院
• 4:山西工程技术学院

摘要(Abstract)：

采用表面机械研磨(SMAT)技术对AZ31镁合金进行前处理,然后通过电化学沉积方法在其表面制备羟基磷灰石(HAP)膜层。采用XRD、SEM、3D光学轮廓仪及胶带法附着力测试对膜层的物相结构、表面形貌和膜层的结合力进行了分析。结果表明,SMATed样品上的HAP的结晶性较non-SMATed样品的增强,HAP膜在SMATed样品上的沉积速率明显增大,HAP膜层厚度由在non-SMATed样品的25μm增加到SMATed+HAP样品的40μm,而且HAP膜层与SMATed基体间结合强度明显提高。动电位极化、EIS测试表明SMATed+HAP样品的自腐蚀电流密度比non-SMATed+HAP样品降低了30.84%,腐蚀电位正移了80.3m V,抗腐蚀性能明显增强。在模拟体液的浸泡实验中SMATed+HAP样品表现出更好的生物活性,样品的的平均腐蚀失重率由non-SMATed+HAP样品的0.87 mg·mm-2·h-1降低到SMATed样品的0.46 mg·mm-2·h-1。

关键词(KeyWords)： 电化学沉积;膜层;羟基磷灰石;表面机械研磨处理;AZ31镁合金

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51001079,21201129);; 中国教育部科研启动基金(20091402110010);; 山西省自然科学基金(2011011020-2,2010021023-1);; 中国博士后科学基金(20100471586);; 山西医科大学青年基金会(2012-057546);; 太原科技大学校博士科研启动项目(20152011);; 国家青年基金(61505101)

作者(Author): 张西璐,杜华云,安艳丽,刘宝胜,卫英慧,侯利锋,郭春丽

DOI: 10.13289/j.issn.1009-6264.2016.08.026

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