摘要
采用喷涂方式,在AZ91D镁合金表面涂覆一种保护性的有机涂层体系。采用电化学阻抗谱(EIS)分析了有机涂层体系在3.5%的NaCl腐蚀溶液中的电化学腐蚀行为。结合有机涂层体系在3.5%的NaCl腐蚀溶液中浸泡前和浸泡后的表面形貌、EDS分析,研究了有机涂层体系对镁合金的腐蚀防护能力。研究结果显示:在浸泡336h后,有机涂层体系仍具有较高的阻抗模值(104Ω·cm2),表明此时有机涂层体系对镁合金仍能提供良好的腐蚀防护。
A protective organic coating system was prepared on AZ91D magnesium alloy by mechanical spray.The electrochemical corrosion behavior of the organic coating systemin 3.5% NaCl solution was investigated with electrochemical impedance spectroscopy(EIS).The corrosion protection properties of the organic coating system before and after immersion in 3.5% NaCl was studied with surface morphology and EDS analysis.Research showed that,after 336 h immersion,the organic coating system exhibited high resistant module(104Ω·cm2),which suggested that organic coating system still provided good corrosion protection for AZ91D magnesium alloy.
作者
向江涛
杨小奎
杨彩云
陈喜栋
罗来正
XIANG Jiang-tao;YANG Xiao-kui;YANG Cai-yun;CHEN Xi-dong;LUO Lai-zheng(Southwest Technology and Engineering Research Institute,Chongqing400039,China;Chongqing Engineering Research Center for Environmental Corrosion and Protection,Chongqing400039,China)
出处
《黄冈师范学院学报》
2018年第6期25-29,共5页
Journal of Huanggang Normal University
基金
国防技术基础项目(JSHS2014209B004)
关键词
镁合金
有机涂层体系
电化学阻抗谱
表面形貌
EDS
magnesium alloys
organic coating system
electrochemical impedance spectroscopy
surface morphology
EDS
