文献类型：期刊文献

英文题名：Protection of aluminium foil AA8021 by molybdate-based conversion coatings

作者：Liang, Chang-Sheng[1];Lv, Zhong-Fei[1];Zhu, Ye-Ling[1];Xu, Shi-Ai[1];Wang, Hong

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：288

起止页码：497

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20134917049540);WOS:【SCI-EXPANDED(收录号:WOS:000327493400066)】；

基金：We are grateful for the support of this research provided by Shanghai Leading Academic Discipline Project (B502) and Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：Aluminium; Metal coatings; Polarization; EIS; Interfaces

摘要：A quick method for surface treatment of aluminium foil with environment-friendly and effective molybdate-based coating was developed in this study. Aluminium foil samples were treated with molybdate-based solution. The microstructure and composition of the resulting molybdate-based conversion coatings were explored by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray photoelectric spectroscopy (XPS). We found that the molybdate-based conversion coating was composed mainly of MoO3, (MoO3)(x)(P2O5)(y) and Al-2(MoO4)(3) compounds. Furthermore, corrosion resistance of the treated aluminium foil was evaluated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. Our results show that all of the aluminium foils with molybdate-based conversion coatings have much better corrosion resistance than bare aluminium foil. Notably, the sample treated at 40 degrees C exhibited the best corrosion resistance. The new method is very suitable for continuous processing. (C) 2013 Elsevier B.V. All rights reserved.