汪震,刘其斌,肖明,杨邦成

• 1:贵州大学材料与冶金学院
• 2:贵州省材料结构与强度重点实验室
• 3:四川大学生物材料工程研究中心

摘要(Abstract)：

为了改善活性生物稀土梯度涂层的质量,在碱液环境中采用电极化处理法(PAS)对宽带激光熔覆生物活性稀土梯度涂层进行后处理。利用XRD和电化学分析仪对涂层的相组成和耐腐蚀性进行了研究,通过模拟体液浸泡试验考察了生物陶瓷涂层的生物活性和涂层表面的电荷分布情况。结果表明,碱液环境中电极化处理法(PAS)能够提高涂层的结晶度,使涂层中的非晶相、杂相向羟基磷灰石转化。PAS对涂层的耐腐蚀性影响不大。与未处理涂层相比,PAS处理后的涂层生物活性更好,且涂层表面产生了更多的负电荷。

关键词(KeyWords)： 宽带激光熔覆;梯度涂层;稀土氧化物Nd2O3;电极化;生物活性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(50961003);; 贵州大学研究生创新基金资助项目(省研理工2010001);; 贵州省科技创新人才团队建设项目(科合人才团队(2010)4004)

作者(Author): 汪震,刘其斌,肖明,杨邦成

DOI: 10.13289/j.issn.1009-6264.2011.10.019

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