孙宇航,黄俊,杨思雨,徐吉林,罗军明,张剑平

• 1:南昌航空大学材料科学与工程学院
• 2:南昌航空大学江西省金属材料微结构控制重点实验室

摘要(Abstract)：

为了提高生物医用Ti6Al4V合金的耐磨性和耐腐性能,采用双辉光等离子体表面冶金技术在其表面制备了均匀致密的Nb涂层。结果表明:Nb涂层主要由Nb和金属间化合物AlNbTi_2和AlNb_2组成。相比Ti6Al4V基材,Nb涂层的显微硬度是其的2倍,Nb涂层的平均摩擦系数和磨损率分别下降了14%和95.4%,Nb涂层的主要的磨损机制为粘着磨损。Nb涂层的腐蚀电位(E_(corr))和极化电阻(R_p)较高,腐蚀电流密度(I_(corr))较低,表明具有优良的耐腐蚀性,且具有Nb涂层的Ti6Al4V合金的孔隙率仅为3.1%,大大降低了侵蚀性介质与基材接触的可能性。

关键词(KeyWords)： 生物医学Ti6Al4V;Nb涂层;耐磨性;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51704167,51764041);; 江西省自然科学基金重点项目(20202ACBL214011);; 航空科学基金(2016ZF56020)

作者(Author): 孙宇航,黄俊,杨思雨,徐吉林,罗军明,张剑平

DOI: 10.13289/j.issn.1009-6264.2021-0111

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