镁合金ZM5高频感应表面合金化改性层的腐蚀行为  

High-frequency Induction for Surface Alloying of Magnesium Alloy ZM5 and Its Corrosion Behavior

作　　者：马幼平[1] 陆旭忠[2] 徐可为[3] 

机构地区：[1]1西安交通大学金属材料强度国家重点实验室,陕西西安710049 [2]西安建筑科技大学,陕西西安710055 [3]西安交通大学金属材料强度国家重点实验室,陕西西安710049

出　　处：《稀有金属材料与工程》2003年第3期191-193,共3页Rare Metal Materials and Engineering

基　　金：陕西省教育厅项目(01ZC17);陕西省科技厅攻关项目(2001K07-G1)

摘　　要：采用高频感应对ZM5镁合金表面进行合金化改性处理,并对改性层组织和腐蚀行为进行了研究。结果表明:镁合金经高频感应表面合金化改性处理,表层区域具有几乎连续的β(Mg17Al12)相的细化晶粒区,认为这种均匀连续的β相将外部环境与镁合金中的α相隔离,从而使镁合金的腐蚀速率降低。A novel method for surface alloying of magnesium alloy with high-frequency induction was proposed. The corrosion rate of treated sample in 3% NaCl solution was measured, and the changes in microstructure before and after corrosion were examined. It was found that the continuous beta phase (Mg17Al12) zone with fine grains functioned as isolation or barrier for the a-phase of anti-corrosion Mg alloy from the corrosive atmosphere.

关 键 词：改性层 高频感应 镁合金 表面合金化 腐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]