杨小奎,张涛,张世艳,何建新,牟献良.环氧富锌涂层对AZ91D镁合金的腐蚀防护能力研究[J].装备环境工程,2014,11(1):18-23. YANG Xiao-kui,ZHANG Tao,ZHANG Shi-yan,HE Jian-xin,MU Xian-liang.Research on the Corrosion Protection Properties of Zn-rich Epoxy Coating Provided for AZ91D Magnesium Alloy[J].Equipment Environmental Engineering,2014,11(1):18-23.
环氧富锌涂层对AZ91D镁合金的腐蚀防护能力研究
Research on the Corrosion Protection Properties of Zn-rich Epoxy Coating Provided for AZ91D Magnesium Alloy
投稿时间：2013-09-02  修订日期：2013-11-03
DOI：10.7643/issn.1672-9242.2014.01.004
中文关键词:  镁合金  环氧富锌涂层  电化学阻抗谱
英文关键词:magnesium alloys  Zn-rich epoxy coating  electrochemical impedance spectroscopy
基金项目:
作者单位
杨小奎 西南技术工程研究所，重庆400039；重庆市环境腐蚀与防护工程技术研究中心，重庆400039 
张涛 西南技术工程研究所，重庆400039；重庆市环境腐蚀与防护工程技术研究中心，重庆400039 
张世艳 西南技术工程研究所，重庆400039；重庆市环境腐蚀与防护工程技术研究中心，重庆400039 
何建新 西南技术工程研究所，重庆400039；重庆市环境腐蚀与防护工程技术研究中心，重庆400039 
牟献良 西南技术工程研究所，重庆400039；重庆市环境腐蚀与防护工程技术研究中心，重庆400039 
AuthorInstitution
YANG Xiao-kui Southwest Technology and Engineering Research Institute，Chongqing400039，China; Chongqing Engineering Research Center for Environmental Corrosion and Protection，Chongqing400039，China 
ZHANG Tao Southwest Technology and Engineering Research Institute，Chongqing400039，China; Chongqing Engineering Research Center for Environmental Corrosion and Protection，Chongqing400039，China 
ZHANG Shi-yan Southwest Technology and Engineering Research Institute，Chongqing400039，China; Chongqing Engineering Research Center for Environmental Corrosion and Protection，Chongqing400039，China 
HE Jian-xin Southwest Technology and Engineering Research Institute，Chongqing400039，China; Chongqing Engineering Research Center for Environmental Corrosion and Protection，Chongqing400039，China 
MU Xian-liang Southwest Technology and Engineering Research Institute，Chongqing400039，China; Chongqing Engineering Research Center for Environmental Corrosion and Protection，Chongqing400039，China 
摘要点击次数:
全文下载次数:
中文摘要:
      目的研究环氧富锌涂层对AZ91D镁合金的腐蚀防护能力。方法采用机械喷涂法在AZ91D镁合金表面制备一种保护性的环氧富锌涂层。采用电化学阻抗谱（EIS）研究环氧富锌涂层在0.5mol/L的Na2SO4腐蚀溶液中的电化学腐蚀行为及其对镁合金的腐蚀防护能力。结果浸泡初期，环氧富锌涂层的阻抗谱中只出现一个时间常数，暗示着环氧富锌涂层优异的阻挡层作用；浸泡48h后，环氧富锌涂层阻抗谱中出现两个时间常数，高频和低频时间常数分别对应环氧富锌涂层中高聚合的介电性质和锌粉的活性溶解；浸泡336h后，环氧富锌涂层仍具有很高的阻抗模值，表明此时环氧富锌涂层对镁合金仍能提供良好的腐蚀防护。结论环氧富锌涂层在0.5mol/LNa2SO4腐蚀溶液中能对AZ91D镁合金提供很好的腐蚀防护。
英文摘要:
      ObjectiveTo investigate the corrosion protection properties of Zn-rich epoxy coating provided for AZ91D magnesium Alloy.MethodsA protective Zn-rich epoxy coating was prepared on AZ91D magnesium alloy by a method of mechanical spray. The electrochemical corrosion behavior and corrosion protection properties of Zn-rich epoxy coating provided for magnesium were investigated with electrochemical impedance spectroscopy（EIS）in 0.5 mol/L Na2SO4 corrosive media. ResultsIn the initial immersion stage，the coating presented only one time constant suggesting the excellent barrier-type coating. At an immersion time of48h，two time constants were observed in the electrochemical impedance spectroscopy which corresponded to the dielectric properties of polymer in the high-frequency range and the active dissolution of Zn particles in the low-frequency range. At an immersion time of336h，the Zn-rich epoxy coating exhibited highly resistant module which suggested that Zn-rich epoxy coating still provided excellent corrosion protection for AZ91D magnesium alloy.ConclusionThe Zn-rich epoxy coating could provide excellent corrosion protection for the AZ91D magnesium alloy in0.5mol/L Na2SO4corrosive media.
查看全文  查看/发表评论  下载PDF阅读器
关闭

关于我们 | 联系我们 | 投诉建议 | 隐私保护 | 用户协议

您是第11994813位访问者    渝ICP备15012534号-5

版权所有:《装备环境工程》编辑部 2014 All Rights Reserved

邮编：400039     电话：023-68792835    Email: zbhjgc@163.com

视频号 公众号