Formation of a cerium conversion coating on magnesium alloy using ascorbic acid as *** and anticorrosive properties of the formed films
作者机构：Instituto de Ingeniería Electroquímica y Corrosión(INIEC)Departamento de Ingeniería QuímicaUniversidad Nacional del SurAv.Alem 12538000 Bahía BlancaArgentina
出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)
年 卷 期：2016年第4卷第4期
页 面：278-285页
核心收录：
学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0801[工学-力学（可授工学、理学学位）]
基 金：CONICET(PIP-112-201101-00055) ANPCYT(PICT-2012-0141)and Universidad Nacional del Sur(PGI 24/M127) Bahía Blanca,Argentina are acknowledged for financial support
主 题：Cerium coatings AZ91D alloy Ascorbic acid Anticorrosive properties
摘 要：Cerium-based conversion coatings were formed on AZ91D magnesium alloy by immersion of the substrate in solutions containing Ce(NO_(3))_(3),H_(2)O_(2) and ascorbic acid(HAsc).The characterisation of the films was performed by electrochemical and surface analysis techniques such as SEM,EDS,X-ray diffraction and X-ray photoelectron spectroscopy(XPS).The degree of corrosion protection achieved was evaluated in simulated physiological solution by the open circuit potential monitoring,polarisation techniques and electrochemical impedance spectroscopy(EIS).The presence of HAsc in the conversion solution causes changes in the morphology,adherence and anticorrosive performance of the *** improvement in the corrosion resistance is closely associated with the corrosion inhibition properties of HAsc.
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