{"title":"Performance of Aluminum Triphosphate and Ceria Modified Mg-rich Epoxy Coating on AZ91D Magnesium Alloy","authors":"Yujing Fan, Y. Zuo, Xuhui Zhao, Yuming Tang","doi":"10.11903/1002.6495.2014.057","DOIUrl":null,"url":null,"abstract":"A corrosion resistant coating for AZ91 D magnesium alloy was prepared by adding pure magnesium particles, aluminium triphosphate(SAP) and ceria in an epoxy coating. The performance of the coating in 3%Na Cl solution was studied with methods of Machu test, electrochemical impedance measurement and scanning electron microscope. The results show that the Mg-rich epoxy coating failed and the magnesium substrate was corroded after immersion for about 2000 h,while no corrosion was observed beneath the coating with SAP and ceria addition after immersion for 4448 h. Distinctly the added SAP and ceria can decrease the activity of magnesium particles in the Mg-rich epoxy and thereby prolong the life time of the coating. On the other hand, the compactness and the barrier property of the coating are improved as well.","PeriodicalId":10727,"journal":{"name":"腐蚀科学与防护技术","volume":"27 1","pages":"1-6"},"PeriodicalIF":0.0000,"publicationDate":"2015-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"腐蚀科学与防护技术","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.11903/1002.6495.2014.057","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Chemical Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
A corrosion resistant coating for AZ91 D magnesium alloy was prepared by adding pure magnesium particles, aluminium triphosphate(SAP) and ceria in an epoxy coating. The performance of the coating in 3%Na Cl solution was studied with methods of Machu test, electrochemical impedance measurement and scanning electron microscope. The results show that the Mg-rich epoxy coating failed and the magnesium substrate was corroded after immersion for about 2000 h,while no corrosion was observed beneath the coating with SAP and ceria addition after immersion for 4448 h. Distinctly the added SAP and ceria can decrease the activity of magnesium particles in the Mg-rich epoxy and thereby prolong the life time of the coating. On the other hand, the compactness and the barrier property of the coating are improved as well.
期刊介绍：
Corrosion Science and Protection Technology is approved by the General Administration of Press and Publication of the State Council, the Chinese Academy of Sciences, the Chinese Academy of Sciences Institute of Metals organized by the domestic and international public circulation of national periodicals metal surface treatment academic journals.
The journal is a professional and technical publication. It reports the scientific and technological achievements in the field of metal corrosion and protection, and publishes research reports, reviews, technical reports, research briefs, failure analysis, experience exchange, etc. The readers are engaged in the field of metal corrosion and protection. The target readers are scientific and technological personnel engaged in metal corrosion and protection and teachers and students of related professional colleges and universities.
Corrosion Science and Protection Technology is indexed in CSCD, CSTPCD, CA,MA,SA and other authoritative databases.
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