| 电流密度对ZK60镁合金表面超疏水涂层的制备及耐腐蚀性的影响 |
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| 引用本文： | 巴志新,匡娟,丁玉萍,赵斐,张玲玲,汪永民. 电流密度对ZK60镁合金表面超疏水涂层的制备及耐腐蚀性的影响[J]. 稀有金属材料与工程, 2022, 51(6): 1942-1948 |
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| 作者姓名： | 巴志新 匡娟 丁玉萍 赵斐 张玲玲 汪永民 |
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| 作者单位： | 南京工程学院 材料科学与工程学院，江苏 南京 211167;南京工程学院 江苏省先进结构材料与应用技术重点实验室，江苏 南京 211167,南京工程学院 材料科学与工程学院，江苏 南京 211167;东南大学 材料科学与工程学院，江苏 南京 211189,南京工程学院 材料科学与工程学院，江苏 南京 211167,南京工程学院 材料科学与工程学院，江苏 南京 211167,南京工程学院 材料科学与工程学院，江苏 南京 211167,南京工程学院 材料科学与工程学院，江苏 南京 211167;南京工程学院 江苏省先进结构材料与应用技术重点实验室，江苏 南京 211167 |
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| 基金项目： | National Natural Science Foundation of China (51701093); Qing Lan Project of Jiangsu Province of China |
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| 摘 要： | 为了提高镁合金的耐腐蚀性能，基于层状双氢氧化物（LDHs）膜在ZK60镁合金表面制备了超疏水（SH）涂层。涂层制备过程中引入电场辅助，研究了工作电流密度对涂层性能的影响。结果表明，工作电流密度显著影响LDHs膜的微观结构，这对SH涂层的疏水性具有重要影响。当工作电流密度为25 mA/cm2时，SH涂层表面呈现均匀的微纳米结构，并表现出超疏水性。超疏水涂层的腐蚀电流密度（Icorr=9×10-7 A·cm-2）比ZK60基体的腐蚀电流密度（Icorr=3×10-5 A·cm-2）低了2个数量级，表现出优异的耐腐蚀性。
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| 关 键 词： | 镁合金 超疏水涂层 工作电流密度 耐蚀性 |
| 收稿时间： | 2021-04-26 |
| 修稿时间： | 2021-08-28 |
Influence of Working Current Density on Formation and Corrosion Resistance of Super-Hydrophobic Coating on ZK60 Magnesium Alloy |
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| Ba Zhixin,Kuang Juan,Ding Yuping,Zhao Fei,Zhang Lingling and Wang Yongmin. Influence of Working Current Density on Formation and Corrosion Resistance of Super-Hydrophobic Coating on ZK60 Magnesium Alloy[J]. Rare Metal Materials and Engineering, 2022, 51(6): 1942-1948 |
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| Authors: | Ba Zhixin Kuang Juan Ding Yuping Zhao Fei Zhang Lingling Wang Yongmin |
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| Affiliation: | School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China;Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing Institute of Technology, Nanjing 211167, China,School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China;School of Materials Science and Engineering, Southeast University, Nanjing 211189, China,School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China,School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China,School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China,School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China;Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing Institute of Technology, Nanjing 211167, China |
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| Abstract: | To improve the corrosion resistance of magnesium alloys, super-hydrophobic (SH) coating was fabricated on the surface of ZK60 magnesium alloy coated with layered double hydroxides (LDHs) film. The electric field was introduced in the coating preparation process, and the influences of working current density on the characteristics of the coatings were researched. The results indicate that the working current densities significantly affect the microstructure of the LDHs films, which has an important impact on the hydrophobicity of the SH coatings. When the working current density is 25 mA/cm2, the SH coating presents a homogenous micro-nano structure and super-hydrophobicity. The corrosion current density of the SH coating (Icorr =9×10-7 A·cm-2) is two orders of magnitude lower than that of the ZK60 substrate (Icorr =3×10-5 A·cm-2), indicating excellent corrosion resistance. |
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| Keywords: | magnesium alloy super-hydrophobic coating working current density corrosion resistance |
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