电流对钛合金微弧氧化合成生物陶瓷膜的影响

Effect of electric current on bioceramic film on Ti-6Al-4V alloy micro-arc oxidation

提出了一种直接合成羟基磷灰石的方法,采用微弧氧化技术,在钛基体表面生长出一层致密的、结合良好的羟基磷灰石生物陶瓷膜,考察了微弧氧化电流对生成陶瓷膜的影响。并借助XRD、SEM等测试手段,研究了该生物陶瓷膜的物相组成和表面形貌特征。研究结果表明该生物陶瓷膜是具有双层结构的物相羟基磷灰石/二氧化钛(HAP/TiO_2)。

The bioceramic film containing hydroxyapatite(HAP)was synthesized on Ti-6A1-4V alloy surface using the micro-arc oxidation technique.The influences of electric current density of the micro-arc oxidation on the synthesis of the bioceramic film were studied.The phases and surface morphologies of the bioceramic films were characterized by XRD and SEM.The results show that electric current density and micro-arc oxidation time are two important factors in the formation of HAP,and the micro-arc oxidation films ar...