微弧氧化时间对Ti6Al4V合金表面生物薄膜的影响  

Effects of oxidation time on micro-arc oxidation coatings formed on Ti6Al4V alloy

作　　者：刘忠德[1] 孙茂坚[1] 付华[1] 张中元 向正群[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]镇江市镇特合金材料有限公司,江苏镇江212006

出　　处：《江苏大学学报（自然科学版）》2010年第2期160-164,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：江苏省自然科学基金资助项目(BK2003051)

摘　　要：为了改善钛合金表面的生物学性能,试验采用微弧氧化的方法在Ti6A l4V合金的表面生成一层富含Ca和P的生物氧化薄膜.研究了在恒流模式下不同氧化时间对膜层的形貌、厚度、元素以及相的组成变化的影响.研究结果表明:随着氧化时间的增加,膜层逐渐变得凹凸不平;膜厚的增速变缓;Ca质量分数呈线性增长;P质量分数呈递减式增长;锐钛矿TiO2的相对含量先增长,然后逐渐减少.To improve biological performance on titanium alloy surface, micro-arc oxidation （MAO） method was used to prepare ceramic oxide layer containing calcium and phosphor on surface of Ti6Al4V alloy. The effects of oxidation time on. the surface morphologies, thickness, elements, phase contents of the MAO coatings were investigated when a constant current regime of micro-arc oxidation was applied. The results show that with the increasing of oxidation time, the roughness of the coating surface increases gradually, the growth rates of the MAO coatings decrease, the content of calcium increases in proportion to the time, the content of phosphor increases degressively and the relative content of anatase TiO2 first increases, then decreases.

关 键 词：钛合金 涂覆工艺 氧化膜 相组成 

分 类 号：TG174.453[金属学及工艺—金属表面处理]