Ni含量对CrN涂层抗磨蚀性能的影响研究  

Effect of Ni Content on Wear Resistance Performance of CrN Coatings

作　　者：周升浩 周小卉 王振玉[2] 汪汝佳 马冠水 汪爱英[2,3] 柯培玲 ZHOU Shenghao;ZHOU Xiaohui;WANG Zhenyu;WANG Rujia;MA Guanshui;WANG Aiying;KE Peiling(School of Materials Science and Chemical Engineering,Ningbo University,Zhejiang Ningbo 315211,China;Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Zhejiang Ningbo 315201,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]宁波大学材料科学与化学工程学院,浙江宁波315211 [2]中国科学院宁波材料技术与工程研究所,浙江宁波315201 [3]中国科学院大学材料与光电研究中心,北京100049

出　　处：《表面技术》2024年第11期45-58,共14页Surface Technology

基　　金：国家自然科学基金(U22A20111);宁波市科技计划项目(2023Z110,2022Z011,2023Z022)。

摘　　要：目的探究在模拟海洋环境下,Ni的掺入对CrN涂层耐磨性能的影响,研究不同Ni含量的CrNiN涂层的磨蚀行为。方法采用磁控溅射方法对CrNiN涂层中的Ni含量进行调控,制备CrN涂层、Ni掺杂含量分别为15.85%(原子数分数)和39.06%的CrNiN涂层。通过干摩擦试验和模拟海水磨蚀试验,对3种涂层的力学性能和磨蚀行为进行研究对比,并分析其摩擦损伤机理。结果在干摩擦试验条件下,CrNiN涂层的摩擦学性能主要由涂层的力学性能决定,Ni原子数分数为15.85%的CrNiN涂层兼具高硬度和良好韧性,磨痕最浅,其磨损率在3种涂层中最低,为9.1×10^(-7)mm^(3)/(N·m),而在模拟海洋磨蚀的开路电位(OCP)下,Ni原子数分数为15.85%的CrNiN涂层的磨损率大于CrN涂层,CrN涂层具有最低的摩擦因数以及最低的磨损率。3种涂层在正电位(+0.6 V)时的磨损率显著大于开路电位(OCP)下的磨损率,说明腐蚀降低了涂层的耐磨性。通过对腐蚀产物进行分析,表明CrN的腐蚀产物主要是CrO_(2)以及Cr_(2)O_(3),具有一定的润滑作用,而含Ni的CrNiN涂层在腐蚀过程中产生了NiO,对涂层的耐磨性产生了不利影响。结论在干摩擦试验条件下,CrNiN涂层的摩擦学性能主要由涂层的力学性能决定,Ni原子数分数为15.85%的CrNiN涂层兼具高硬度和良好韧性,从而更耐磨。在模拟海洋磨蚀试验条件下,CrNiN涂层的腐蚀产物严重影响其磨蚀性能。Seawater is a complex corrosive electrolyte solution.Chloride ions can cause severe damage to the oxide film on the metal surface,accelerating the corrosion process of materials.Metals serving in marine environments experience severe coupled corrosion and wear damage.However,these components are prone to corrosion and wear in marine environments,leading to the destruction of the surface's passive film and severe damage to the metal under the combined action of wear and corrosion.To protect alloys in marine conditions from the erosion of friction,metal nitride coatings have been widely applied to alloy surfaces in recent years.These coatings exhibit significant advantages in improving substrate thermal stability,oxidation resistance,and corrosion resistance.CrN coatings have been widely used in cutting tools and molds due to their excellent mechanical properties,corrosion resistance,and oxidation resistance.However,the low toughness of CrN coatings may lead to catastrophic failure through brittle detachment during frictional processes,severely limiting their application scenarios.Studies have shown that the addition of nickel(Ni)elements to CrN coatings can effectively improve their hardness and toughness.Currently,there are few reports on the tribological performance of CrNiN coatings in simulated seawater environments.The aim of this study was to investigate the influence of nickel addition on the wear resistance of CrN coatings in simulated marine environments and explore the wear behavior of CrNiN coatings with different nickel contents.Magnetron sputtering was used to control the nickel content in CrNiN coatings.CrN coatings with a thickness of 3μm and different nickel contents,15.85at.%and 39.06at.%,were prepared on 431 stainless steel substrates.Dry friction experiments and simulated seawater wear tests were conducted to study the mechanical properties and wear behavior of the three kinds of coatings and analyze their frictional damage mechanisms.Under dry friction conditions,the tribological performance o

关 键 词：Ni含量 CrNiN涂层 干摩擦 模拟海水溶液 磨蚀 磨粒磨损 

分 类 号：TG115.58[金属学及工艺—物理冶金]