Corrosion protection of AZ91D magnesium alloy by a cerium-molybdenum coating-The effect of citric acid as an additive
作者机构：Instituto de Ingeniería Electroquímica y Corrosión(INIEC)Departamento de Ingeniería QuímicaUniversidad Nacional del Sur(UNS)CONICETBahía BlancaArgentina
出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)
年 卷 期：2018年第6卷第4期
页 面：356-365页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：CONICET(PIP-112-201101-00055) ANPCYT(PICT-2015-0726) Universidad Nacional del Sur(PGI 24/M127),Bahía Blanca,Argentina
主 题：Cerium and molybdenum-based coatings AZ91D alloy Citric acid Anticorrosive properties
摘 要：In order to improve the corrosion resistance of AZ91D magnesium alloy,a coating was formed by a potentiostatic technique from a solutions containing Ce(NO_(3))_(3),Na_(2)MoO_(4)and citric acid(H_(3)Cit).The degree of corrosion protection achieved was evaluated in simulated physiological solution by monitoring the open circuit potential,polarization techniques and electrochemical impedance spectroscopy(EIS).Surface analysis techniques(SEM,EDS,X-ray diffraction and X-ray photoelectron spectroscopy(XPS))were used for coating *** film is mainly composed by cerium and molybdenum oxides and magnesium oxides and *** obtained results show that the corrosion resistance of the coated electrodes has been increased *** improvement in the anticorrosive performance is in part due to the corrosion inhibition properties of H_(3)Cit.
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