Synergistic effect of hydrophobic film and porous MAO membrane containing alkynol inhibitor for enhanced corrosion resistance of magnesium alloy | |
Liu Yupeng; Liang Jun; Wang Daoai; Zhou Feng; Li zhaoxia; Yu Qiangliang; Zhang Chaoyang | |
刊名 | Surface & Coatings Technology |
2019-01-15 | |
卷号 | 357期号:357页码:515–525 |
关键词 | AZ31 Mg alloyMicro-arc oxidation layerCorrosion inhibitorEISTafelSynergistic effect |
DOI | 10.1016/j.surfcoat.2018.10.054 |
英文摘要 | Magnesium and magnesium alloys have important applications in aviation, electronic devices, medical equipment, and automotive industries, while the corrosion is a common and real problem that must be solved for these applications. In this paper, a novel and effective anti-corrosive composite coating on AZ31 Mg alloys was prepared by the combination of micro-arc oxidation (MAO) layer, corrosion inhibitor and hydrophobic wax film technologies. And among these, the MAO treated micro- and nanopores as the container of corrosion inhibitor and the solid hydrophobic wax as the multifunctional sealing isolating agent. The morphology and phase composition of the resulting composite coatings were investigated by field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD), respectively, indicating the successful synthesis of the organic-inorganic composite coating. The potentiodynamic polarization and electrochemical impedance spectroscopy measurements showed that compared with the MAO membrane covered Mg alloys, the organic-inorganic composite coating has superior corrosion resistance with the a lower corrosion current (5.764 × 10−9 A/cm2) and a higher protection efficiency (99.7%) after immersion in 3.5 wt% NaCl solution, attributing to the synergistic effect of effective inhibition of inhibitor and the physical barrier ability of hydrophobic film and MAO membrane. This simple and low cost strategy to fabricate organic-inorganic composite anticorrosion coatings would have promising applications in the corrosion protection of the light metals and their alloys. |
URL标识 | 查看原文 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.licp.cn/handle/362003/25964] |
专题 | 兰州化学物理研究所_固体润滑国家重点实验室 |
通讯作者 | Wang Daoai |
作者单位 | 1.Qingdao Center of Resource Chemistry and New Materials, Qingdao 266100, China 2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 3.University of Chinese Academy of Sciences, Beijing 100049, China |
推荐引用方式 GB/T 7714 | Liu Yupeng,Liang Jun,Wang Daoai,et al. Synergistic effect of hydrophobic film and porous MAO membrane containing alkynol inhibitor for enhanced corrosion resistance of magnesium alloy[J]. Surface & Coatings Technology,2019,357(357):515–525. |
APA | Liu Yupeng.,Liang Jun.,Wang Daoai.,Zhou Feng.,Li zhaoxia.,...&Zhang Chaoyang.(2019).Synergistic effect of hydrophobic film and porous MAO membrane containing alkynol inhibitor for enhanced corrosion resistance of magnesium alloy.Surface & Coatings Technology,357(357),515–525. |
MLA | Liu Yupeng,et al."Synergistic effect of hydrophobic film and porous MAO membrane containing alkynol inhibitor for enhanced corrosion resistance of magnesium alloy".Surface & Coatings Technology 357.357(2019):515–525. |
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