纯钛微弧氧化阳极工艺过程模型的建立及实验研究  

Research on a Theoretical Model of Anode in Pure Titanium Microarc Oxidation Process

作　　者：王宏元[1,2] 朱瑞富[1,2] 王志刚[3] 吕宇鹏[1,2] 肖桂勇[1,2] 朱先俊[1,2] 

机构地区：[1]材料液固结构演变与加工教育部重点实验室,济南250061 [2]山东大学材料科学与工程学院,济南250061 [3]山东建筑大学材料科学与工程学院,济南250101

出　　处：《材料工程》2012年第7期34-38,共5页Journal of Materials Engineering

基　　金：山东省自然科学基金项目(ZR2009FM019)

摘　　要：对纯钛微弧氧化陶瓷膜在工艺过程中的生长规律进行了实验研究,分析了陶瓷层表面形貌、厚度、相结构等不同生长阶段的特点。基于微弧氧化工艺过程阳极等效电路,建立了电极电压、电流密度、频率、占空比、时间等工艺参数对陶瓷膜性能影响的理论模型。模型分析结果表明:在陶瓷层成膜后,随着膜层厚度的增加,金红石相TiO2相对含量增加;膜层厚度不变时,工艺过程趋于停止。模型分析与实验结果是吻合的,为提高陶瓷膜层性能并改善微弧氧化工艺提供了理论基础。Experiments on the ceramic coating with different growth stages were conducted in the process of pure titanium microarc oxidation （MAO）. The surface morphology, thickness and phase component in different stages were also analysed. Based on the equivalent circuit of MAO anode, a theoretical model was established to investigate the influences of process parameters on the properties of coatings, which include electrical voltage, current density, frequency, duty ratio and time. The a- nalysis results of the model show that the relative content of rutile TiO2 increases with the increase of the thickness after the ceramic coatings are finished; it indicates the MAO process complete as the thickness does not change. All the analysis agrees with the experimental results, and the model can provide a theoretical base for improving the performance of coating as well as MAO technologies.

关 键 词：微弧氧化 纯钛 工艺过程 阳极 模型 

分 类 号：TG174[金属学及工艺—金属表面处理]