研磨时间对AZ31镁合金表面铝锌熔渗层的影响  

Effect of Surface High Energy Attrition Treatment Time on Al-Zn Infiltration Layer on AZ31Magnesium Alloy

作　　者：史梦颖[1] 刘赵铭[1] 

机构地区：[1]大连交通大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2016年第1期87-90,共4页Special Casting & Nonferrous Alloys

基　　金：国家科技支撑计划项目(2011BAE22B04-1-3)

摘　　要：以AZ31镁合金表面制备Al-Zn熔渗层为研究对象,利用高能研磨机进行高能研磨试验,研究了不同时间对镁合金表面熔渗层的影响。利用扫描仪、扫描电镜(SEM)观察熔渗层表面、界面形貌,并对熔渗层界面进行能谱分析(EDS);利用X射线衍射仪(XRD)系统分析熔渗层相组成;用动电位极化曲线分析熔渗层的耐蚀性。结果表明,随着时间延长,镁合金表面熔渗层厚度增加,同时耐蚀性能得到提高。Effects of surface high energy attrition treatment time on Al-Zn infiltration layer on AZ31 magnesium alloys were investigated by using high energy grinding machine.The surface and interface morphology of the coating were examined by scanner and scanning electron microscopy（SEM）.The infiltration layer was analyzed by means of X-Ray diffraction（XRD）and energy dispersion spectrometer（EDS）.The analysis of corrosion resistance on infiltration layer was carried out by potentiodynamic polarization curves.The results reveal that the thickness of infiltration layer is increased with the increase of mechanical attrition treatment time.Meanwhile,the corrosion resistance of AZ31 magnesium alloys is improved.

关 键 词：镁合金 高能研磨 熔渗层 

分 类 号：TG174.4[金属学及工艺—金属表面处理]