重庆理工大学学报（自然科学版）2017，Vol.31Issue(12)：58-62,104,6.DOI:10.3969/j.issn.1674-8425(z).2017.12.010
挤压-剪切镁合金的阳极氧化研究
Investigation of Anodic Oxidation of Ultra-Fine Grained Magnesium Alloy Obtained by Extrusion and Shearing Process
摘要
Abstract
In order to study the effect of grain refinement on the quality and performance of magnesium alloy,anodic oxide films were formed on conventional AZ31 magnesium alloy and ultrafine-grained AZ31 magnesium alloy by extrusion-shearing.The morphology,structure,composition,surface roughness,hardness and corrosion resistance of anodic oxidation films on conventional and ultrafine-grained AZ31 magnesium alloy were studied.The results show that compared with the conventional magnesium alloy,the anodic oxidized surface of extrusion-shear magnesium alloy exhibits a more smaller and more rounded microspores,less surface roughness,higher hardness and better corrosion resistance.It is believed that the changes of the surface properties owe to the matrix microstructure refinement and the defect density increased.The spark discharge is more uniform and small on this surface,so that the film is more compact,and exhibits better corrosion resistance.关键词
挤压-剪切/细晶粒镁合金/阳极氧化/耐蚀性Key words
extrusion-shearing process(ES)/ultra-fine grained magnesium alloy/anodic oxidation/corrosion resistance分类
化学工程引用本文复制引用
杨卿,沟引宁,苏永要,江川..挤压-剪切镁合金的阳极氧化研究[J].重庆理工大学学报（自然科学版）,2017,31(12):58-62,104,6.基金项目
重庆市基础与前沿研究计划项目(cstc2016jcyjA0434) （cstc2016jcyjA0434）
重庆市教委科学技术研究项目(KJ1601104) （KJ1601104）
