标题：Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn
作者：Ke, Chong; Song, Ming-Shi; Zeng, Rong-Chang; Qiu, Yao; Zhang, Yu; Zhang, Rui-Feng; Liu, Rui-Liang; Cole, Ivan; Birbilis, Nick; Chen, 更多 作者机构：[Ke, Chong; Qiu, Yao; Zhang, Yu; Liu, Rui-Liang] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia.; [Song, Ming-Shi; Cole, Ivan; Chen, 更多
通讯作者：Zeng, RongChang;Chen, XB;Zeng, RC
通讯作者地址：[Chen, XB]RMIT Univ, Sch Engn, Carlton, Vic 3053, Australia;[Zeng, RC]Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266590, Shandong, Peop 更多
关键词：Magnesium; SEM; TEM; Passive film; Interfaces
摘要：Strontium phosphate (SrPO4) conversion coatings with the ability to impart significant corrosion resistance were prepared upon magnesium alloy Mg-3Al-4.3Ca-0.1 Mn (wt.%). Scanning electron microscopy equipped with energy dispersive spectroscopy and transmission electron microscopy were also employed to characterise surface and interfacial morphology, along with the composition of the coatings. The protective performance of SrPO4 coatings was examined by potentiodynamic polarisation curves and immersion testing. A coating-growth mechanism was proposed and correlations between processing parameters and coating quality was established. The findings herein provide new insights for design of environmentally-benign and corrosion resistant coatings upon magnesium alloys through a simple chemical conversion technique.