Enhancing Corrosion Resistance and Antibacterial Properties of ZK60 Magnesium Alloy Using Micro-Arc Oxidation Coating Containing Nano-Zinc Oxide  

作　　者：Jin-Xiu Li Jun-Xiu Chen M.A.Siddiqui S.K.Kolawole Yang Yang Ying Shen Jian-Ping Yang Jian-Hua Wang Xu-Ping Su 

机构地区：[1]Key Laboratory of Materials Surface Science and Technology of Jiangsu Province Higher Education Institutes,Changzhou University,Changzhou,213164,China [2]Department of Orthopedics and Traumatology,The Chinese University of Hong Kong,Hong Kong,999077,China [3]School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing,210094,China [4]Metallurgical Engineering Department,NED University of Engineering and Technology,University Road,Karachi,Pakistan [5]Mechanical Engineering Department,School of Engineering and Technology,Federal Polytechnic,Offa P.M.B 420,Offa,Nigeria [6]Department of Orthopedics,Changzhou Hospital of Traditional Chinese Medicine,Changzhou,213004,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2025年第1期45-58,共14页金属学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.52001034);the China Postdoctoral Science Foundation(No.2023M731677);the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX23_3032).

摘　　要：Nano-zinc oxides(ZnO)demonstrate remarkable antibacterial properties.To further enhance the corrosion resistance and antibacterial efficiency of magnesium alloy micro-arc oxidation(MAO)coatings,this study investigates the preparation of ZnO-containing micro-arc oxidation coatings with dual functionality by incorporating nano-ZnO into MAO electrolyte.The influence of varying ZnO concentrations on the microstructure,corrosion resistance,and antibacterial properties of the coating was examined through microstructure analysis,immersion tests,electrochemical experiments,and antibacterial assays.The findings revealed that the addition of nano-ZnO significantly enhanced the corrosion resistance of the MAO-coated alloy.Specifically,when the ZnO concentration in the electrolyte was 5 g/L,the corrosion rate was more than ten times lower compared to the MAO coatings without ZnO.Moreover,the antibacterial efficacy of ZnO+MAO coating,prepared with a ZnO concentration of 5 g/L,surpassed 95%after 24 h of co-culturing with Staphylococcus aureus(S.aureus).The nano-ZnO+MAO-coated alloy exhibited exceptional degradation resistance,corrosion resistance,and antibacterial effectiveness.

关 键 词：NANO-ZNO Micro-arc oxidation(MAO)coating ZK60 alloy Corrosion behavior Antibacterial characteristics 

分 类 号：TG174.4[金属学及工艺—金属表面处理]