Intermetallic layer obtained by the compact powder diffusion alloying method on AZ91D magnesium alloy in air

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• 作者：Dongzhu Lu^a ; ^b ; Qichao Zhang^a ; ^b ; ^c ; Xiutong Wang^a ; ^b ; Lihui Yang^a ; ^b ; Xiumin Ma^a ; ^b ; Wencheng Wang^a ; ^b ; ^c ; Yanliang Huang^a ; ^b ; ^{hyl@qdio.ac.cn}
• 关键词：AZ91D magnesium alloy ; Aluminum coating ; Diffusion ; Air atmosphere ; Crack
• 刊名：Surface and Coatings Technology
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：309
• 期：Complete
• 页码：986-993
• 全文大小：1838 K
• 卷排序：309

文摘

Limiting factors which inhibit Al diffusion in air on magnesium alloy is investigated. The formation of an MgO film on alloy surface is argued to be a main limiting factor. Diffusion temperature and diffusion time affect the thickness of the MgO film. Formation of MgO could cause weight loss and crack initiation of the specimen. Repeated diffusion after elimination of the MgO film allows a whole coating to form.