电解液成分对等离子体电解氧化TC4合金腐蚀行为和摩擦学性能的影响  

Effect of electrolyte composition on corrosion behavior and tribological performance of plasma electrolytic oxidized TC4 alloy

作　　者：杨翠萍 孟宪泽 李鑫冉 李哲轩 严豪杰 伍廉奎 曹发和 Cui-ping YANG;Xian-ze MENG;Xin-ran LI;Zhe-xuan LI;Hao-jie YAN;Lian-kui WU;Fa-he CAO(School of Materials,Sun Yat-sen University,Shenzhen 518107,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China)

机构地区：[1]中山大学材料学院,深圳518107 [2]南方海洋科学与工程广东省实验室(珠海),珠海519082

出　　处：《Transactions of Nonferrous Metals Society of China》2023年第1期141-156,共16页中国有色金属学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52071347,51971205);the Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),China(No.311020012)。

摘　　要：在TC4合金表面制备4种典型等离子体电解氧化(PEO)涂层,研究电解质组成对PEO涂层腐蚀行为和摩擦学性能的影响。结果表明,PEO涂层的腐蚀行为和摩擦学性能与电解质成分密切相关。在含NaH_(2)PO_(2)的电解液中制备的PEO涂层由于内氧化膜较致密而具有最好的耐蚀性能,而在含NaAlO_(2)的电解液中制备的PEO涂层由于含有Al_(2)O_(3)而具有最好的摩擦学性能。为制备具有良好耐蚀性和耐磨性的PEO涂层,以NaH_(2)PO_(2)和NaAlO_(2)为电解液主要成分制备了复合PEO涂层。Four kinds of typical plasma electrolytic oxidation(PEO)coatings were prepared on TC4 alloy to investigate the influence of electrolyte composition on the corrosion behavior and tribological performance of the PEO coatings.The results show that both the corrosion behavior and tribological performance of the PEO coatings are highly dependent on the electrolyte composition.The PEO coating fabricated from the electrolyte containing NaH_(2)PO_(2)exhibits the best corrosion resistance owing to its denser inner layer.The PEO coating prepared from the electrolyte containing NaAlO_(2)reveals the best tribological performance due to the generation of Al_(2)O_(3).To prepare a PEO coating with satisfying corrosion resistance and wear resistance,a composite PEO coating was fabricated from the electrolyte containing NaH_(2)PO_(2)and NaAlO_(2).

关 键 词：TI6AL4V合金 等离子体电解氧化 极化曲线 磨损 

分 类 号：TG174.4[金属学及工艺—金属表面处理]