摘要
TC4钛合金因其高比强度、低密度等优点在人工骨植入领域广泛使用,但其耐磨性低、生物相容性差等问题严重限制其应用范围的拓展。为了提高TC4耐磨性,采用等离子体电解氧化(PEO)/水热合成技术在TC4表面制备复合涂层。重点研究水热合成液中La(NO_(3))_(3)掺杂量对涂层相组成、微观结构、显微硬度、耐磨性的影响。利用XRD、SEM、显微硬度计、摩擦磨损试验机等手段表征涂层性能。结果表明,复合涂层主要相为锐钛矿型TiO_(2)(A-TiO_(2))、羟基磷灰石(HAp)。随着La(NO_(3))_(3)掺杂量增加,涂层中HAp含量增加。水热处理过程中La元素直接参与到HAp的合成。随着La(NO_(3))_(3)掺杂量增加,涂层显微硬度和摩擦因数均呈先降低后升高趋势。但过多掺杂La(NO_(3))_(3)后,HAp生成量略有降低,掺La涂层表面变光滑,涂层耐磨性略有提高。
TC4 titanium alloy was widely applied in the field of artificial bone implantation due to its advantages of high specific strength and low density,but its low wear resistance and poor biocompatibility seriously limited its application scope.In order to improve the wear resistance of TC4,a composite coating was prepared on the surface of TC4 by plasma electrolytic oxidation(PEO)/hydrothermal synthesis technology.The effect of La(NO_(3))_(3) doping amount on phase composition,microstructure,microhardness and wear resistance of the coating was investigated.The properties of the coating were characterized by XRD,SEM,microhardness tester and friction and wear testing machine.The results showed that the main phases of the composite coating were anatase TiO_(2)(A-TiO_(2))and hydroxyapatite(HA p).With the increase of La(NO_(3))_(3) doping,HA p content in the coating increased.La element was directly involved in the synthesis of HA p during hydrothermal treatment.With the increase of La(NO_(3))_(3) doping,the microhardness and friction coefficient of the coating decreased first and then increased.However,after excessive doping of La(NO_(3))_(3),HA p production decreased slightly,the surface of La doped coating became smooth and the wear resistance of the coating was slightly improved.
作者
孙明阳
李春丰
任晓雪
周洋
张云龙
刘德宝
王俊青
牛楚涵
李成海
SUN Mingyang;LI Chunfeng;REN Xiaoxue;ZHOU Yang;ZHANG Yunlong;LIU Debao;WANG Junqing;NIU Chuhan;LI Chenghai(Collage of Materials Science and Engineering,Jiamusi University,Jiamusi 154000,China;College of Biology and Agriculture,Jiamusi University,Jiamusi 154000,China;Collage of Mechanical Engineering,Heilongjiang Vocational College of Agricultural Engineering,Harbin 150000,China;Department of Stomatology,Red Flag Hospital Affiliated to Mudanjiang Medical College,Mudanjiang 157000,China;Collage of Basic Medicine,Jiamusi University,Jiamusi 154000,China)
出处
《兵器装备工程学报》
北大核心
2025年第2期251-257,共7页
Journal of Ordnance Equipment Engineering
基金
黑龙江省教育厅基础科研业务费项目(2022-KYYWF-0581)。
关键词
TC4合金
等离子体电解氧化
水热合成
掺镧涂层
耐磨性
TC4 alloy
plasma electrolytic oxidation
hydrothermal synthesis
lanthanum-doped coating
abrasion resistance
作者简介
孙明阳(2001—),男,硕士研究生,E-mail:Sunmingyangsun@126.com;通信作者:周洋(1986—),女,博士,讲师,E-mail:Dr_Zhou@163.com。
