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Corrosion protection of NiNb metallic glass coatings for 316SS by magnetron sputtering

查看全文 作　　者：[1,2,5]L.Jiang;[3,4,5]Z.Q.Chen;[6]H.B.Lu;[3]H.B.Ke;[1]Y.Yuan;[1]Y.M.Dong;[2]X.K.Meng 高影响力作者 机构地区：[1]School of Chemistry and Life Sciences,Suzhou University of Science and Technology,Suzhou 215009,China;[2]Institute of Materials Engineering,National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210009,China;[3]Songshan Lake Materials Laboratory,Dongguan 523808,China;[4]Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;[5]Institute of Materials Engineering,Nanjing University,Nantong 226019,China;[6]College of Chemistry and Chemical Engineering,Nantong University,Nantong 226019,China高影响力机构 出　　处：《Journal of Materials Science & Technology》索引2021年第20期,共11页高影响力期刊 基　　金：L.Jiang acknowledges thefinancial support from the Natural Science Foundation of Suzhou University of Science and Technology(No.XKQ2019009);the Basic Research Program of Nantong(No.JC2019085);Z.Q.Chen acknowledgesfinancial support from the Fundamental Research Funds for the Central Universities(No.021314380118);the Natural Science Foundation of Jiangsu Province(No.BK20180266);the Basic Research Program of Nantong(No.JC2019083);X.K.Meng acknowledges thefinancial support from the National Natural Science Foundation of China(No.51771090). 摘　　要：Metallic glasses(MGs)appear as promising anti-corrosion coating materials due to their microstructural and physicochemical advantages.Herein,we proposed magnetron sputtered NiNb thin film MG coatings(MGCs)with different structures and compositions for corrosion protection of 316 stainless steel in an aggressive saline environment.The properties of monolayered Ni_(50)Nb_(50) and Ni_(60)Nb_(40),as well as the multilayered Ni_(50)Nb_(50)/Ni_(60)Nb_(40)(at.%)MGCs,were characterized in terms of morphology and microstructural properties,as well as the anticorrosion behavior.All the NiNb MGCs presented compact structure and the monolayered coatings exhibited preferable adhesion properties in comparison with the multilayered coating.The electrochemical tests and XPS results imply that the monolayered Ni_(50)Nb_(50) MGC with high Nb content resisted corrosion mainly due to the formation of stable passive film that contained abundant Nb_(2)O_(5) species,whereas the Ni_(60)Nb_(40) MGC with high Ni content showed week corrosion protection performance during long-term service due to the dissolution of Ni cations and the devastation of the coating structure.Though with bit worse adhesion and more vulnerable Ni_(60)Nb_(40) layers,the multilayered Ni_(50)Nb_(50)/Ni_(60)Nb_(40) MGC possessed comparable corrosion resistance with the monolayered Ni_(50)Nb_(50) MG coating,which remained stable even after 32 days of exposure.Such performance should be ascribed to the combined eff;ect of the repassivation property for the sub-layers,the hindrance of propagation paths of micro-defects,and the obstruction of corrosive species by interfaces in the multilayered coating. 关 键 词：Magnetron sputtering NiNb Metallic glasses MULTILAYER Corrosion protection
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