Mg-3Gd-1Zn合金在模拟体液中的腐蚀与磨损协同作用

doi:10.11896/cldb.18080165

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Abstract The Mg-3Gd-1Zn alloy was performed by solution treated at different temperatures and then aged. The corrosion behavior of alloys was tested by mass loss,the friction and wear properties in simulated body fluid (SBF) were evaluated by friction and wear tester, and the mass loss caused by corrosion and wear was quantitatively evaluated. The corrosion rate of the alloy in SBF accompanied with wear was compared with that without wear, and the wear behavior of the alloy in SBF was also compared with that under dry sliding condition. The results showed that the eutectic phase decreased, the grain size increased, the hardness increased slightly, and the corrosion rate decreased first and then increased with the increase of solution temperature. The friction coefficient in SBF with wear was about 33%—55% of that under dry sliding condition. The wear rate in SBF was 1.3%—1.5% of that under dry sliding condition. The wear would obviously accelerate the corrosion rate. The corrosion rate of alloy in SBF with wear under different conditions was 11—19 times of that without wear. In general, the corrosion rate was increased significantly due to wear, and wear was obviously impeded by SBF.

Key words： biomaterial magnesium alloy heat treatment corrosion friction and wear

Published: 31 July 2019

CLC number:

TG146.2

Fund:This work was financially supported by the Natural Science Foundation of Jiangsu Province for Outstanding Youth (BK20160081), Natural Science Foundation of Higher Education Institutions of Jiangsu Province-Key Project (18KJA430008), the “333 Project” of Jiangsu Province (BRA2018338), the Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJCX18_0587).

About author:: Yujin Niereceived her bachelor’s degree in June 2016 from Nanjing Institute of Technology. In September 2017, she is a postgraduate in Nanjing Institute of Technology and participates in the properties of biome-dical magnesium alloys.
Xiaobo Zhangis currently a professor in School of Materials Science and Engineering at Nanjing Institute of Technology. In 2009, he worked as a postdoctor at Shanghai Jiaotong University, focusing on degradable medical magnesium alloys. In 2011, he was engaged in teaching and research at the School of Materials Science and Engineering of Nanjing Institute of Technology. His main research direction is magnesium alloy. At present, he has published over 50 papers indexed by SCI or EI as the first author or correspondent author, and he has been authorized 6 invention patents as the first inventor.

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Cite this article:

NIE Yujin,DAI Jianwei,ZHANG Xiaobo. Synergistic Effects of Corrosion and Wear Resistance of Mg-3Gd-1Zn Alloy in Simulated Body Fluid[J]. Materials Reports, 2019, 33(18): 3057-3061.

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http://www.mater-rep.com/EN/10.11896/cldb.18080165 OR http://www.mater-rep.com/EN/Y2019/V33/I18/3057

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