| 恒电位对TiAlN涂层在海水环境中磨蚀性能的影响 |
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| 引用本文： | 单磊,汪陇亮,孙润军,王永欣. 恒电位对TiAlN涂层在海水环境中磨蚀性能的影响[J]. 表面技术, 2017, 46(11): 165-171. DOI: 10.16490/j.cnki.issn.1001-3660.2017.11.023 |
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| 作者姓名： | 单磊 汪陇亮 孙润军 王永欣 |
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| 作者单位： | 浙江纺织服装职业技术学院,浙江 宁波 315211;西安工程大学 纺织与材料学院,西安 710048;中国科学院宁波材料技术与工程研究所 中国科学院海洋新材料与应用技术重点实验室 浙江省海洋材料与防护技术重点实验室,浙江 宁波 315201;西安工程大学 纺织与材料学院,西安,710048;中国科学院宁波材料技术与工程研究所 中国科学院海洋新材料与应用技术重点实验室 浙江省海洋材料与防护技术重点实验室,浙江 宁波,315201 |
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| 基金项目： | 国家自然科学基金资助项目（51605433）；浙江省教育厅科研项目（Y201534852）；宁波市自然科学基金（2016A610221）；宁波产业技术创新重大专项-科技创新团队（2015B11009）；973科技支撑计划（2014CB643302） |
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| 摘 要： | 目的研究不同恒电位对TiAlN涂层在海水环境中磨蚀性能的影响,分析其腐蚀磨损行为。方法用PVD多弧离子镀技术在316不锈钢上沉积TiAlN涂层。通过XRD测试、硬度测试、结合力测试、电化学工作站测试、不同恒电位下磨蚀测试及磨痕截面轮廓测试,分别评价TiAlN涂层的相结构、表面硬度、结合力、电化学性能、摩擦系数和磨损率,通过扫描电子显微镜观察涂层磨痕形貌并分析其磨蚀损伤机理。结果 TiAlN涂层在海水环境下的抗腐蚀性优于基体316不锈钢。在阴极电位下,恒电位增加使涂层的摩擦系数逐渐降低。阳极电位为0.5 V时,摩擦形成的TiO_2基含水化合物颗粒可作为润滑剂,使涂层的摩擦系数迅速降低至0.45。TiAlN涂层在干摩擦条件下的磨损率为5.5678×10-5 mm3/(N·m),在阴极保护电位为-1 V下的磨损率为2.2909×10-6 mm3/(N·m),在开路电位(OCP)下的磨损率为7.4881×10-5 mm3/(N·m)。结论随着加载电位(SCE)的升高,涂层的腐蚀效应愈发明显。涂层在阴极电位下的磨蚀机理主要为塑性变形,在阳极电位下的磨蚀机理主要为疲劳点蚀。
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| 关 键 词： | TiAlN涂层 摩擦系数 磨损率 电化学 海水 磨蚀 |
| 收稿时间： | 2017-08-18 |
| 修稿时间： | 2017-11-20 |
Effects of Constant Potentials on Abrasion Resistance of TiAlN Coating in Seawater |
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| SHAN Lei,WANG Long-liang,SUN Run-jun and WANG Yong-xin. Effects of Constant Potentials on Abrasion Resistance of TiAlN Coating in Seawater[J]. Surface Technology, 2017, 46(11): 165-171. DOI: 10.16490/j.cnki.issn.1001-3660.2017.11.023 |
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| Authors: | SHAN Lei WANG Long-liang SUN Run-jun WANG Yong-xin |
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| Affiliation: | 1.Department of Mechanical, Zhejiang Textile and Fashion College, Ningbo 315211, China; 2.School of Textile and Materials , Xi''an Polytechnic University, Xi''an 710048, China; 3.Key Laboratory of Marine Materials and Related Technologies of Chinese Academy of Sciences, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China,1.Department of Mechanical, Zhejiang Textile and Fashion College, Ningbo 315211, China; 2.School of Textile and Materials , Xi''an Polytechnic University, Xi''an 710048, China; 3.Key Laboratory of Marine Materials and Related Technologies of Chinese Academy of Sciences, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China,School of Textile and Materials , Xi''an Polytechnic University, Xi''an 710048, China and Key Laboratory of Marine Materials and Related Technologies of Chinese Academy of Sciences, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China |
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| Abstract: | The work aims to study the effects of different constant potentials on abrasion resistance of TiAlN coating in ar-tificial seawater. TiAlN coating was deposited on 316 stainless steel by adopting multi-arc ion plating technology. Phase struc-ture, surface hardness, adhesion, electrochemical property, friction coefficient and wear rate of the TAliN coating was evaluated by performing XRD test, hardness test, adhesion test, electrochemical workstation test, abrasion test under different constant potentials and grinding crack section profile test, respectively. SEM was used to observe grinding crack morphology of the coating and analyze abrasion damage mechanism. Corrosion resistance of the TiAlN coating was superior to that of the substrate 316 stainless steel in seawater. Under the cathode potential, friction coefficient of the coating decreased as constant potential in-creased. Under the anode potential of 0.5 V, TiO2-based aquo-compound particles generated by friction could reduce the friction coefficient rapidly to 0.45 as a lubricant. Wear rate of the TiAlN coating under dry friction was 5.5678×10-5 mm3/(N·m). The wear rate was 2.2909×10-6 mm3/(N·m) under-1 V cathode protection potential, and 7.4881×10-5 mm3/(N·m) under open circuit potential (OCP). With the increase of load potential (SCE), the coating had more obvious corrosion effect. Abrasion me-chanism of the coating under cathode potential was mainly plastic deformation, and the abrasion mechanism under anode poten-tial was mainly fatigue pitting. |
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| Keywords: | TiAlN coating friction coefficient wear rate electrochemical seawater abrasion |
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