等离子喷涂复合生物陶瓷涂层耐磨性能和生物活性的研究  

Study on Wear Resistance and Biological Activity of Plasma Sprayed Composite Bioceramic Coating

作　　者：刘晋京 朱红梅[1,2] 贺冬 宋妮妮 朱卫华 陈志勇[3] 王新林 Liu Jinjing;Zhu Hongmei;He Dong;Song Nini;Zhu Weihua;Chen Zhiyong;Wang Xinlin(College of Mechanical Engineering,University of South China,Hengyang,Hunan 421001,China;Ultra-fast Wiener Technology and Laser Advanced Manufacturing Hunan Provincial Key Laboratory,University of South China,Hengyang,Hunan 421001,China;College of Electrical Engineering,University of South China,Hengyang,Hunan 421001,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421001 [2]南华大学电气工程学院,湖南衡阳421001 [3]南华大学超快微纳技术与激光先进制造湖南省重点实验室,湖南衡阳421001

出　　处：《机电工程技术》2021年第3期81-83,共3页Mechanical & Electrical Engineering Technology

基　　金：南华大学2020年研究生科研创新项目(编号:203YXC010)。

摘　　要：采用等离子喷涂技术,在钛合金表面制备含CaB_(6)/La_(2)O_(3)的HA生物陶瓷涂层,通过扫描电子显微镜(SEM)、不同载荷下的摩擦磨损和体外模拟体液(SBF)浸泡实验,对复合涂层微观形貌、磨损性能和生物活性进行研究。结果表明,等离子喷涂的涂层微观表面粗糙并且存在一些形状不规则的孔隙,过渡层HA/Ti与5BH/La涂层和基体之间的结合界面均实现良好的机械结合。摩擦磨损实验中,随着施加载荷的增大,5BH/La复合涂层的摩擦因数和摩损率都升高,涂层表现出显著的材料去除。生物陶瓷涂层浸泡在模拟体液(SBF)中14 d后,可诱导类骨磷灰石在涂层表面快速沉积,涂层表现出良好的生物活性。The composite hydroxyapatite(HA)coatings containing CaB_(6)/La_(2)O_(3) were prepared on the titanium alloy substrate by plasma spraying method.SEM,friction and wear under different loads and in vitro simulated body fluid(SBF)immersion experiments were used to characterize the microstructure,wear performance and bioactivity of the coating.The results show that the microscopic surface of the plasma sprayed coating is rough and there are some pores,and the interfaces between HA/Ti intermediate transition layer and 5BH/La coating or substrate are both of good mechanical occlusion.In the friction and wear experiment,with the increase of the applied load,the friction coefficient and the wear rate of the 5BH/La composite coating increase,and the coating showed significant material removal.After 14 days of immersion,a large amount of mineralized apatite is deposited on the coating surface and the coating exhibits good bioactivity.

关 键 词：等离子喷涂 TC4钛合金 生物陶瓷涂层 摩擦磨损 生物活性 

分 类 号：TG178[金属学及工艺—金属表面处理]