Effect of manganese on the formation of hybrid zirconiumbased conversion coating on low carbon steel surface

作     者：严森 李建中 Yan Sen;Li Jianzhong

作者机构：Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education)Northeastern UniversityShenyang 110819China School of MetallurgyNortheastern UniversityShenyang 110819China 

出 版 物：《China Welding》 (中国焊接（英文版）)

年 卷 期：2024年第33卷第1期

页      面：13-19页

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51974069) the National Key R&D Program of China(No.2019YFE0123900) the Special Fund for Basic Scientific Research of Central Colleges(N2125035) 

主　　题：Mn concentration hybrid Zr-based conversion coating corrosion resistance adhesion 

摘      要：This study revealed the effect of Mn on the formation of hybrid zirconium-based conversion coatings(HZCC)on low carbon *** XPS results indicated that the Mn compounds on the surface of low carbon steel were mainly MnO and Mn_(2)SiO_(4).Combined with the electrochemical measurements,the corrosion resistance of HZCC showed an increase followed by a decrease with increasing Mn concentration,which was related to the Mn_(2)SiO_(4) and SiO_(2) on the surface of low carbon *** excessive Mn concentration resulted in the loss of SiO_(2) and aggregation of Mn_(2)SiO_(4) on the low carbon steel surface,which caused the aggregation of Zr compounds on the surface and reduced the uniformity of the ***,a moderate amount of Mn addition would be beneficial to increase the adhesion of organic coatings.