Enhanced pitting corrosion resistance of a Zr-based metallic glass by ultraviolet light irradiation

作     者：Z.Chen D.P.Wang S.Wang Y.X.Geng Y.X.Guo Y.C.Wu Z.G.Liu Y.Y.Zhang Y.X.Wang Z.Chen;D.P.Wang;S.Wang;Y.X.Geng;Y.X.Guo;Y.C.Wu;Z.G.Liu;Y.Y.Zhang;Y.X.Wang

作者机构：School of Materials Science and EngineeringJiangsu University of Science and Technology.Zhenjiang 212003JiangsuChina School of Mechanical EngineeringJiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina 

出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)

年 卷 期：2023年第30卷第8期

页      面：1642-1649页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(51901086) Natural Science Foundation of Jiangsu Province of China(BK20190977). 

主　　题：Metallic glass Pitting-Corrosion Ultraviolet light irradiation Passive film 

摘      要：The influence of ultraviolet light irradiation on the pitting corrosion performance of a Zr_(2)Ni metallic glass was examined using electrochemical methods and immersion test in 0.05 mol/L NaCl solution.From the results of potentiostatic polarization,the pitting potential of the ultraviolet light-irradiated sample shifted positively with a value of~300 mV,revealing the enhanced pitting corrosion resistance of the samples.The corrosion morphology after the immersion test also demonstrated lower degree of corrosion damage and improved pitting resistance of the sample with ultraviolet light irradiation.X-ray photoelectron spectroscopy analysis revealed more zirconium enrichment in the passive film and no chloride ions adsorption for the samples with ultraviolet irradiation,accounting for the suppression of the pit generation and growth.Our findings indicate that ultraviolet light irradiation improves the pitting corrosion resistance of the Zr-based metallic glasses,which are promising structural materials to be used in corrosion environments with high ultraviolet irradiation.