湖南大学学报（自然科学版）2023，Vol.50Issue(12)：138-146,9.DOI:10.16339/j.cnki.hdxbzkb.2023315
SBF下镁锌钙合金耐蚀性能和耐磨性能研究
Study on Corrosion Resistance and Friction and Wear Properties of Mg-Zn-Ca Alloy under SBF
摘要
Abstract
For biomedical magnesium alloys,Mg-Zn-Ca ternary alloys were prepared by Zn and Ca elements microalloying and high extrusion ratio deformation.The microstructure of the materials was characterized by metallographic analysis and scanning electron microscopy.According to the application scenario,the corrosion resistance of the alloy was evaluated by the combination of conventional electrochemical test and micro-electrochemical test in human simulated body fluid(SBF).At the same time,the sliding wear property of the material was analyzed by friction and wear test.The results show that the alloy microstructure is the single-phase solid solution by microalloying and hot extrusion.The grain size of the alloy is relatively uniform,the corrosion current density is about 119.33 μA/cm2,and the corrosion mechanism is uniform corrosion.Compared with dry friction,the better corrosion resistance of the material itself co-improves the wear resistance of the material in the simulated body fluid environment.At the same time,the wear rate of the material is significantly reduced with the lubrication effect brought by the simulated body fluid.At this time,the wear mechanism is mainly corrosion wear accompanied by slight abrasive wear.关键词
Mg-Zn-Ca合金/生物医用/微区电化学测试/人体模拟体液/摩擦磨损Key words
Mg-Zn-Ca alloy/biomedical/microelectrochemical test/human simulated body fluid/friction and wear分类
金属材料引用本文复制引用
徐世伟,胡楠,滕杰,胡镜宙,牛云飞..SBF下镁锌钙合金耐蚀性能和耐磨性能研究[J].湖南大学学报（自然科学版）,2023,50(12):138-146,9.基金项目
湖南省科技创新领军人才项目(2020RC4013),Hunan Province Technological Innovation Leading Talents Projects(2020RC4013) （2020RC4013）
宁波市"科技创新 2025"重大专项(2022Z110),Ningbo"Technological Innovation 2025"Major Projects(2022Z110) （2022Z110）
