Development of Slippery Liquid-Infused Porous Surface on AZ31 Mg Alloys for Corrosion Protection
作者机构：College of Materials Science and EngineeringChongqing UniversityChongqing400044China National Engineering Research Center for Magnesium AlloysChongqing UniversityChongqing400044China
出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)
年 卷 期：2023年第36卷第2期
页 面：229-236页
核心收录：
学科分类：0710[理学-生物学] 08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：supported by the National Natural Science Foundation of China(No.52001036) the China Postdoctoral Science Foundation(Nos.2022T150767 and 2021M693708).
主 题：Mg alloy Hydrothermal temperature Corrosion protection Slippery liquid-infused porous surface Hydrophobicity Surface stability
摘 要：The relatively poor corrosion resistance remarkably limits the wide applications of Mg alloys in practice,although they possess many attractive properties,like low density,high specific strength,and good biocompatibility.The formation of a protective coating can effectively suppress the corrosion.In this work,a slippery liquid-infused porous surface(SLIPS),with good surface hydrophobicity,stability,and self-healing property,was formed on AZ31 Mg alloys.The development of SLIPS requires suitable porous micro/nanostructures.Layered double hydroxide(LDH),with effective corrosion resistance for Mg alloys,was a good candidate to accommodate the liquid lubricant.Especially,different temperatures were applied to in situ form MgAl-LDH on AZ31 Mg alloys.The results showed that the temperature of 120℃was the best condition for the SLIPS to provide good corrosion protection for Mg alloys,with the lowest corrosion current density of 3.19×10^(-9)A cm^(−2).In addition,the SLIPS performed well in the long-term immersion test and abrasion test.The AZ31 Mg alloys with superior corrosion resistance and good mechanical and chemical stability can be extensively applied in areas of automotive,electronics,and aerospace.
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