TaC微粒对TC4钛合金表面掺铜微弧氧化层结构和性能的影响  

Effect of TaC particles on structure and properties of copper doped micro arc oxidation coating on TC4 titanium alloy surface

作　　者：高巍[1] 刘江南[1] 丁智松 魏敬鹏 杨巍[1] GAO Wei;LIU Jiang-nan;DING Zhi-song;WEI Jing-peng;YANG Wei(School of Materials Science and Chemical Engineering,Xi􀆳an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学材料与化工学院,陕西西安710021

出　　处：《材料热处理学报》2022年第2期128-134,共7页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金面上项目(52071252);陕西省重点研发计划项目(2021ZDLSF03-11)。

摘　　要：通过在电解液中添加不同浓度的TaC微粒,在TC4钛合金表面制备了含TaC微粒的掺铜微弧氧化层,以提升其在模拟海水中的抗腐蚀、耐磨损和抗菌性能。采用扫描电镜(SEM)、X射线衍射(XRD)、摩擦磨损试验、抗菌试验和电化学腐蚀试验等研究了TaC微粒浓度对微弧氧化层微观结构及性能的影响。结果表明:TaC微粒均匀分布在掺铜微弧氧化层中,且其含量随电解液中TaC微粒浓度的增加而增大,当TaC微粒浓度为2 g/L时,微弧氧化层的致密性好;掺入TaC微粒后微弧氧化层的摩擦系数增大,但由于TaC自身优异的力学性能和化学稳定性,TaC微粒浓度为2 g/L时所制备的微弧氧化层的摩痕宽度最小,抗菌性能和耐蚀性最为优异。Copper doped micro arc oxidation(MAO)coatings containing TaC particles were prepared on the surface of TC4 titanium alloy by adding different concentrations of TaC particles to the electrolyte to improve its corrosion resistance,wear resistance and antibacterial properties in simulated seawater.The effects of TaC particle concentration on microstructure and properties of the MAO coatings were studied by means of scanning electron microscopy(SEM),X-ray diffraction(XRD),friction and wear test,antibacterial test and electrochemical corrosion test.The results show that the TaC particles are evenly distributed in the copper doped MAO coatings,and its content increases with the increase of TaC particle concentration in the electrolyte.When the TaC particle concentration is 2 g/L,the compactness of the MAO coatings is good.The friction coefficient of the MAO coatings increases after adding TaC particles.However,due to the excellent mechanical properties and chemical stability of the TaC,the wear scar width of the MAO coatings prepared with the concentration of TaC particles of 2 g/L is the smallest,and the antibacterial performance and corrosion resistance are the best.

关 键 词：TC4钛合金 微弧氧化 TaC微粒 模拟海水 结构与性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]