College of Materials Science and Engineering Shandong University of Science and Technology Qingdao 266590 China;
School of Materials Science and Engineering Liaocheng University Liaocheng 252059 China;
School of Materials Science and Engineering Zhengzhou University Zhengzhou 450002 China;
Department of Physics City University of Hong Kong Tat Chee Avenue Hong Kong China;
School of Materials Science and Energy Engineering Foshan University Foshan 528000 China;
aluminum alloy; layered double hydroxide; polymer coating; cerium oxide; corrosion resistance;