胡勇,李申申,吴栋,李英新,康文江,张昊,张会莹.聚多巴胺接枝纳米氧化锌复合涂层对TC4合金表面修饰的影响研究[J].稀有金属材料与工程,2021,50(8):2876~2882.[Hu Yong,Li Shenshen,Wu Dong,Li Yingxin,Kang Wenjiang,Zhang Hao,Zhang Huiying.Study on the Effect of Polydopamine Grafted Nano-ZnO Composite Coating on Surface Modification of TC4 Alloy[J].Rare Metal Materials and Engineering,2021,50(8):2876~2882.]
聚多巴胺接枝纳米氧化锌复合涂层对TC4合金表面修饰的影响研究
投稿时间:2020-08-31  修订日期:2020-09-26
中文关键词:  TC4  聚多巴胺  溶胶凝胶法  润湿性  腐蚀性能
基金项目:甘肃省科技重大专项项目(17ZD2GC001)、兰州理工大学红柳一流学科建设基金、兰州理工大学大学生创新创业训练计划项目立项资助(DC2019190)
中文摘要:
      为改善Ti6Al4V(TC4)作为骨科硬组织植入物长期在人体内服役时发生细菌感染及体液腐蚀后有害离子释放的弊端,采用溶胶-凝胶法梯度动态升温处理氧化锌(ZnO)溶胶,分别在TC4表面成功制备了纳米ZnO涂层和ZnO/PDA(聚多巴胺)复合涂层。系统分析了两种涂层的物相结构、微观形貌、涂层结合力、润湿性以及在模拟体液中的腐蚀性能。研究结果表明:TC4基材上所制备的ZnO/PDA复合涂层相较于单一ZnO涂层具有更为均匀的纳米ZnO颗粒分布,PDA对金属离子的螯合作用通过Ti-O-Zn键促进了基底与ZnO间的结合力,同时PDA的引入进一步提升了ZnO涂层的润湿性、降低其表面粗糙度、改善了TC4的耐腐蚀性能。
Study on the Effect of Polydopamine Grafted Nano-ZnO Composite Coating on Surface Modification of TC4 Alloy
英文关键词:TC4  polydopamine  sol-gel method  wettabiliy  corrosion resistance
英文摘要:
      In order to solve the problem that Ti6Al4V (TC4) alloy is prone to bacterial infection and release of harmful ions as an orthopedic hard tissue implant during long-term service in the human body, a sol-gel method was used to prepare nano-zinc oxide (ZnO) sol with gradient dynamic heating treatment, then the nano-ZnO coating and ZnO/PDA (polydopamine)composite coating were successfully formed on the surface of TC4. The phase structure, micro morphology, coating adhesion, wettability and corrosion performance of the two coatings in simulated body fluids were systematically analyzed. The result shows that the ZnO/PDA composite coating prepared on the TC4 substrate has a more uniform distribution of nano-ZnO particles than that of a single ZnO coating. The chelating effect of PDA on metal ions promotes the bonding force between the substrate and ZnO through the Ti-O-Zn bond. Simultaneously, the introduction of PDA further improves the wettability of the ZnO coating, reduces its surface roughness, and improves the corrosion resistance of TC4.
作者单位E-mail
胡勇 兰州理工大学材料科学与工程学院 luthuyong@outlook.com 
李申申 兰州理工大学材料科学与工程学院 lutlishen@163.com 
吴栋 兰州理工大学材料科学与工程学院  
李英新 兰州理工大学材料科学与工程学院  
康文江 兰州理工大学材料科学与工程学院  
张昊 兰州理工大学材料科学与工程学院  
张会莹 兰州理工大学材料科学与工程学院  
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