| 偏压对CrN涂层结构与海水环境摩擦学行为的影响 |
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| 引用本文： | 郭峰,王永欣,薛群基,王立平.偏压对CrN涂层结构与海水环境摩擦学行为的影响[J].摩擦学学报,2014,34(6):608-616. |
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| 作者姓名： | 郭峰 王永欣 薛群基 王立平 |
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| 作者单位： | 1. 中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州 730000;2. 中国科学院大学, 北京 100049;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, 中国科学院 宁波材料技术与工程研究所, 宁波 315201;中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州 730000;中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金项目(51202261)资助. |
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| 摘 要： | 利用多弧离子镀技术在M2高速钢和p(100)单晶硅片上用不同偏压条件分别制备了4种CrN涂层,考察了涂层的显微结构、力学性能、海水环境中的电化学特性与摩擦学行为,分析了涂层的裂纹形貌与断裂机制.结果显示:交替偏压下制备的多层CrN涂层内部结构致密且硬度与择优取向梯度变化,具有高的膜基结合力(Lc大于150 N),较小的平均晶粒尺寸(70 nm),较高的自腐蚀电位(-0.234 V)和较低的自腐蚀电流(3.052×10-8A).在海水环境中与直径为3 mm的YG-6(94%WC+6%Co)硬质合金球配副,Hertzian接触应力达到3.47 GPa时,平均摩擦系数低于0.15,磨损率低于1.26×10-15m3/(Nm),磨痕内没有明显的涂层崩裂失效,耐磨损性能明显优于其余3种CrN涂层.
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| 关 键 词： | 氮化铬(CrN) 结合力 耐腐蚀 海水 摩擦磨损 |
| 修稿时间： | 5/6/2014 12:00:00 AM |
Effect of Bias on Microstructure and Tribological Behavior in Artificial Seawater of CrN Coatings |
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| GUO Feng,WANG Yong-xin,XUE Qun-ji and WANG Li-ping.Effect of Bias on Microstructure and Tribological Behavior in Artificial Seawater of CrN Coatings[J].Tribology,2014,34(6):608-616. |
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| Authors: | GUO Feng WANG Yong-xin XUE Qun-ji and WANG Li-ping |
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| Institution: | 1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Marine New Materials and Related Technology, Zhejiang Key Laboratory of Marine Materials and Protection Technology, Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China;State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | Mono-layer and multi-layer chromium nitride coatings were deposited on M2 high speed steel substrates and silicon wafers by multi-arc ions plating technique. Microstructure, mechanical properties including hardness, modulus and critical load, polarization curves and tribological properties in artificial seawater were investigated. Results show that multi-layer CrN performed optimally both in mechanical and friction performance. Dense structure and sophisticated intergranular boundaries induced by laddered changing bias during coating process enhanced the wear and corrosion resistance (Ecorr=-0.234 V, Icorr=3.052×10-8 A) of this multi-layer CrN obviously compared to other mono-layer ones. The average fricition coefficient less than 0.15 when Hertzian contact stress was attained 3.47 GPa,corresponded to relatively low specific wear rate, 1.26×10-15 m3/(Nm) in sliding process. |
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| Keywords: | chromium nitride (CrN) adhesion corrosion resistance seawater tribological properties |
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