表面技术2018，Vol.47Issue(2)：225-230,6.DOI:10.16490/j.cnki.issn.1001-3660.2018.02.035
Al含量对Al-Mg2Si复合涂层耐蚀耐磨性能的影响
Influence of Al Content on Corrosion and Wear Resistance of Al-Mg2Si Composite Coatings
摘要
Abstract
This paper aims to study the corrosion and wear of Al-Mg2Si composite coating by spraying it on AZ31B magnesium alloy surface.The corrosion resistance and wear resistance of coatings with different composition proportions were characterized by scanning electron microscopy,electrochemical testing,friction wear testing machine and ultra-depth three-dimensional Microscope.It showed that the corrosion resistance of Al-Mg2Si composite coating sealed was much higher than that of AZ31B magnesium alloy,and the less the content of Al,the more obvious the potential shift was.The positive displacement of Al (20％)-Mg2Si coating was the most,which was shifted 0.5288 V,and the corrosion current density was minimum 3.298× 10-6 A/cm2.Furthermore,the less the amount of Al addition,the smaller the wear rate and friction coefficient of the coating,and the wear rate that was 2.48× 10-4 mm3/(N·mm) and friction coefficient which was 0.25 were lower when the content of Al was 20％.The less Al content of Al-Mg2Si composite coating is,the better the corrosion and wear resistance are.关键词
AZ31B镁合金/火焰喷涂/Al-Mg2Si复合涂层/耐蚀性/耐磨性Key words
AZ31B magnesium alloy/flame spraying/Al-Mg2Si composite coating/corrosion resistance/frictional wear分类
矿业与冶金引用本文复制引用
范春,龙威,周小平..Al含量对Al-Mg2Si复合涂层耐蚀耐磨性能的影响[J].表面技术,2018,47(2):225-230,6.基金项目
国家自然科学基金(51171062)Supported by the National Natural Science Foundation of China (51171062) （51171062）
