镁合金AZ31无铬无氟无亚硝酸盐磷化膜的制备及耐蚀性能

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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 22; no. 11; pp. 2713 - 2718
Main Author 崔学军 刘春海 杨瑞嵩 李明田 林修洲 龚敏
Format Journal Article
LanguageEnglish
Published 2012
Subjects
AZ31合金
无铬
磷酸盐转化膜
耐蚀
镁合金
阳极溶解
阴极析氢
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ISSN1003-6326

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Bibliography:43-1239/TG
A phosphate solution free of chromate, fluoride and nitrite was prepared and an environment-friendly film was obtained on AZ31 magnesium alloy surface via the chemical deposition method. The morphology, composition, phase structure and its corrosion resistance were studied. The effects of film-forming temperature and free acid on corrosion resistance, microstructure and electrochemical behavior of the film were discussed. The results indicate that the corrosion resistance of AZ31 with the phosphate film was better than blank AZ31 substrate, which was most attributed to the great inhibitive action on the anodic dissolution and cathodic hydrogen evolution of the film.
magnesium alloy; AZ31 alloy; phosphate conversion coating; chromate-free film; corrosion resistance; anodicdissolution; cathodic hydrogen evolution
CUI Xue-jun, LIU Chtm-hai, YANG Rui-song, LI Ming-tian, LIN Xiu-zhou, GONG Min 1. Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Zigong 643000, China; 2. College of Materials and Chemical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
ISSN:1003-6326