刘冰,肖桂勇,吕宇鹏

• 1:山东大学材料液固结构演变与加工教育部重点实验室
• 2:山东大学材料科学与工程学院
• 3:山东大学苏州研究院

摘要(Abstract)：

为了提高医用纯钛及其合金的早期成骨效果和长期稳定性,本研究通过化学转化方法分别在纯钛和Ti-6Al-4V基体表面制备了一层含锌、钙元素的磷酸盐转化膜。利用X射线衍射仪(XRD)、热场发射扫描电镜(FE-SEM)和电化学工作站对转化膜的成分、微观结构和电化学行为进行了表征。结果表明:纯钛和Ti-6Al-4V表面转化膜主要由片层结构的磷酸锌钙(scholzite)晶体组成,Ti-6Al-4V表面含少量磷酸锌(hopeite)晶体和磷酸氢钙(brushite)晶体。纯钛表面片层晶粒呈花簇状堆积,Ti-6Al-4V表面片层晶体呈交叉镶嵌堆积,分布更为均匀。通过电化学测试分析可知,在0.9%NaCl溶液中,转化膜的耐蚀性能与基体相比没有较大差异。

关键词(KeyWords)： 纯钛;Ti-6Al-4V合金;化学转化;磷酸锌钙;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 山东省自然科学基金(ZR2013EMM013);; 山东省科技发展计划项目(2014GGX102031);; 江苏省青年基金(BK20140412)

作者(Author): 刘冰,肖桂勇,吕宇鹏

DOI: 10.13289/j.issn.1009-6264.2016.s1.020

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