Mg-Al系镁合金的耐蚀性能研究进展  

Research Progress on Corrosion Resistance of Mg-Al Magnesium Alloy

作　　者：吴进[1] 罗岚[1] 刘勇[1] 熊庭辉[1] WU Jin;LUO Lan;LIU Yong;XIONG Tinghui(Key Laboratory of Lightweight and High Strength Structural Materials of Jiangxi Province,School of Materials Science and Engineering,Nanchang University,Nanchang 330001,China)

机构地区：[1]南昌大学材料科学与工程学院江西省轻质高强结构材料重点实验室,南昌330001

出　　处：《腐蚀与防护》2018年第9期651-657,共7页Corrosion & Protection

基　　金：国家重点研发计划(2016YFB0701201;2016YFB0701203;2017YFB1103701);国家自然科学基金(51671101;51464034;51062003;11564025);江西省自然科学基金(Nos.20172BCB22002;20171BCD40003;20161ACB21003;20162BCB23013);江西省教育厅重点计划(GJJ150010)

摘　　要：镁合金作为绿色轻质结构材料被广泛应用于工业生产,但耐蚀性较差制约着其发展。与其他系列镁合金相比,Mg-Al系镁合金具有更优异的耐蚀性。着重介绍了Mg-Al二元合金的腐蚀特点、机理。分析了第三项合金元素对α相自腐蚀电位,第二相析出相的种类、数量、分布,杂质元素(Fe/Cu/Ni)容许极限的影响。热处理和热变形工艺(如:热轧、热挤压)对微观组织结构的影响,并讨论了相应的腐蚀特性变化。概述了Mg-Al系合金常用表面处理技术及防护效果。Magnesium alloys as a green light structural materials are widely used in industry.However,the poor corrosion resistance is a challenge which limits their wider application.Mg-Al series alloys exhibit better corrosion properties,as compared with other Mg alloys.The corrosion characteristics and mechanism of Mg-Al binary alloy are introduced.The influence of alloying elements on the corrosion performance is analyzed.The effects of heat treatment and deformation,especially hot rolling and extrusion deformation on the corrosion resistance of Mg-Al alloy are discussed.The advantages and disadvantages of the commonly used protective technology on the surface of Mg-Al alloy are reviewed.

关 键 词：MG-AL合金 耐蚀性 MG17AL12 热处理 热轧 表面处理 

分 类 号：TG146.2[一般工业技术—材料科学与工程]