| 钛合金表面微弧氧化涂层在模拟海洋环境下摩擦腐蚀规律研究 |
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| 引用本文： | 张玉林,庞雅洁,海潮,杜翠薇. 钛合金表面微弧氧化涂层在模拟海洋环境下摩擦腐蚀规律研究[J]. 装备环境工程, 2021, 18(6): 42-50. DOI: 10.7643/issn.1672-9242.2021.06.007 |
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| 作者姓名： | 张玉林 庞雅洁 海潮 杜翠薇 |
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| 作者单位： | 北京科技大学 新材料技术研究院腐蚀与防护中心,北京 100083;北京科技大学 新材料技术研究院腐蚀与防护中心,北京 100083;教育部腐蚀与防护重点实验室,北京 100083;北京材料基因工程高精尖创新中心,北京 100083 |
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| 基金项目： | 国家科技重大专项(2017-Vll-0012-0109) |
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| 摘 要： | 目的 研究TC17钛合金及其表面微弧氧化(Microarc Oxidation,MAO)涂层在模拟海洋大气环境下发生摩擦腐蚀行为的规律及特征.方法 利用微弧氧化技术,在TC17钛合金表面原位生长MAO涂层,通过SEM、EDS以及XRD对MAO涂层微观结构、元素分布以及相组成进行检测分析.采用电化学工作站和摩擦腐蚀设备研...
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| 关 键 词： | TC17钛合金 微弧氧化 电化学阻抗 耐蚀性 摩擦腐蚀 |
| 收稿时间： | 2021-01-15 |
| 修稿时间： | 2021-03-12 |
Tribo-corrosion Behaviours of Microarc Oxidation Coating on Titanium Alloy Surface in Simulated Marine Environment |
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| ZHANG Yu-lin,PANG Ya-jie,HAI Chao,DU Cui-wei. Tribo-corrosion Behaviours of Microarc Oxidation Coating on Titanium Alloy Surface in Simulated Marine Environment[J]. Equipment Environmental Engineering, 2021, 18(6): 42-50. DOI: 10.7643/issn.1672-9242.2021.06.007 |
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| Authors: | ZHANG Yu-lin PANG Ya-jie HAI Chao DU Cui-wei |
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| Affiliation: | Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China; Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China;Key Laboratory for Corrosion and Protection of the Ministry of Education , Beijing 100083, China;Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing 100083, China |
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| Abstract: | The studies were aimed to explore the tribo-corrosion behaviours of TC17 alloy and MAO coating in simulated marine environment. The surface and cross-sectional micro-structures, elements distribution and crystal structure were analyzed by SEM, EDS and XRD, respectively. Meanwhile, the corrosion resistance and tribo-corrosion behaviours of the as-prepared specimens were tested by electrochemical workstations and friction-corrosion equipment, respectively. The results indicate that the MAO coating prepared in silicate solution possessed superior bond to the substrate, and no obvious micro-cracks observed on the coating surface without mounts of small and evenly distributed micropores. In addition, The MAO coating is mainly composed of rutile phase, anatase phase and SiO2 phase. The electrochemical testing revealed that the self-corrosion potential of MAO coating is slightly higher than that of substrate, while the passivation current density is significantly reduced. Furthermore, the friction coefficient of the MAO coating is lower and its open circuit potential decreases slowly comparing with TC17 alloy during tribo-corrosion process. Therefore, the oxide film formed on TC17 alloy is difficult to play an effective protective role for which breaks instantly as soon as sliding. However, the MAO coating can supply an excellent wear resistance against the friction ball due to the high hardness of rutile phase and SiO2 phase. |
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| Keywords: | TC17 alloy micro-arc oxidation electrochemical impedance corrosion resistance tribo-corrosion |
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