| 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. 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. |
| 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 |
| Tribo-corrosion Behaviours of Microarc Oxidation Coating on Titanium Alloy Surface in Simulated Marine Environment |
| 投稿时间：2021-01-15 修订日期：2021-03-12 |
| DOI：10.7643/issn.1672-9242.2021.06.007 |
| 中文关键词: TC17钛合金 微弧氧化 电化学阻抗 耐蚀性 摩擦腐蚀中图分类号:TG174 文献标识码:A 文章编号:1672-9242(2021)06-0042-09 |
| 英文关键词:TC17 alloy micro-arc oxidation electrochemical impedance corrosion resistance tribo-corrosion |
| 基金项目:国家科技重大专项(2017-Vll-0012-0109) |
|
|
| Author | Institution |
| ZHANG Yu-lin | Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China |
| PANG Ya-jie | Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China |
| HAI Chao | Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China |
| DU Cui-wei | 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 |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 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究试样在模拟海洋环境条件下的耐腐蚀及摩擦腐蚀的性能。结果 在硅酸盐中制备的MAO涂层，表面微孔尺寸较小，且分布均匀，MAO涂层与基体结合良好，无明显微裂纹等缺陷的存在，其平均厚度约为15.8 μm。MAO涂层主要有金红石相、锐钛矿相和SiO2相组成。MAO涂层的自腐蚀电位较基体有所提高，而其钝化电流密度则显著降低。MAO涂层在腐蚀液中表现出较低的摩擦系数，开路电位缓慢降低。结论 TC17基体表面氧化膜在摩擦开始瞬间发生破裂，难以起到有效的防护作用，而MAO涂层由硬度较高的金红石相和SiO2相组成，在摩擦腐蚀过程中，能够起到优异的耐磨损腐蚀的作用。 |
| 英文摘要: |
| 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. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
