聚醚醚酮与不同硬质涂层配副的摩擦学行为对比  

Comparison of Tribological Behavior of Polyetheretherketone Matched with Different Hard Coatings

作　　者：周小卉 孙丽丽[1,2] 蒋先春 崔丽 汪爱英[1,2,4] 崔平 柯培玲 ZHOU Xiao-hui;SUN Li-li;JIANG Xian-chun;CUI Li;WANG Ai-ying;CUI Ping;KE Pei-ling(Key Laboratory of Marine Materials and Related Technologies,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China;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 Physical Science and Technology,Shanghai Tech University,Shanghai 201210,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]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,浙江宁波315201 [2]中国科学院宁波材料技术与工程研究所,浙江省海洋材料与防护技术重点实验室,浙江宁波315201 [3]上海科技大学物质科学与技术学院,上海201210 [4]中国科学院大学,北京100049

出　　处：《表面技术》2023年第6期246-255,360,共11页Surface Technology

基　　金：中国科学院A类战略性先导科技专项(XDA22010303);中科院创新团队(292020000008);浙江省自然科学基金(LQ20E020004);宁波市科技创新2025重大专项(2022Z054)。

摘　　要：目的对比聚醚醚酮(PEEK)与不锈钢、CrN涂层、Cr/GLC多层涂层3种配副的大气环境摩擦学行为。方法采用多靶磁控溅射镀膜技术在17-4PH不锈钢基底表面制备CrN涂层和Cr/GLC多层涂层。采用摩擦磨损试验机和三维轮廓仪对配副摩擦因数和磨损率进行测试,采用扫描电镜、拉曼光谱仪和显微红外光谱仪等方法,表征不同配副摩擦前后的表面物理化学状态,剖析涂层与PEEK配副的磨损机理。结果CrN涂层和Cr/GLC多层涂层均显著提高了不锈钢基底的摩擦性能,相较于PEEK与17-4PH不锈钢配副,CrN涂层和Cr/GLC多层涂层的摩擦因数都显著降低。此外,涂层的磨损率分别降低了93.1%、97.4%;对应PEEK配副的磨损体积也分别降低了35.1%和65.8%。在3种配副条件下,PEEK摩擦后均发生了芳香环的开放、取代、交联,以及不同程度的结晶度损失,结晶度的顺序为未磨PEEK>PEEK-Cr/GLC>PEEK-CrN>PEEK-17-4。结论CrN涂层的硬度、粗糙度较高,且缺少润滑,黏着磨损更显著,PEEK材料发生了大量转移,转移材料在减轻PEEK磨损的同时也阻止了结晶度的降低。PEEK与Cr/GLC多层涂层配副表现出最佳的耐磨损性能,主要归因于摩擦时PEEK结晶度的维持及GLC中富石墨相赋予涂层的低剪切润滑作用。The surface coating technology can improve the friction and wear behavior of the substrate while maintaining its excellent mechanical properties.CrN coating as the representative of hard coating materials with high hardness can effectively resist impact and abrasive wear,and is often used in mechanical bearing shaft,piston pin and other friction protection.Diamond like carbon(DLC)coating is a kind of metastable material formed by the sp2 and sp3 hybrid of carbon,which has high hardness,wear resistance,chemical inertia and other properties.In particular,graphite-like carbon(GLC)coating,which is dominated by graphite-phase sp2 hybrid bond content,shows better adaptability to multiple environments.In order to carry out the technical optimization of polyetheretherketone(PEEK)matching materials,and solve the problem of easy wear of PEEK material of PEEK-stainless steel friction system,the work aims to compare and investigate the tribological behavior of PEEK matched with stainless steel,CrN and Cr/GLC coatings.CrN and Cr/GLC multi-layer coatings were prepared on 17-4PH stainless steel substrate(the size wasϕ17 mm×3 mm)by multi-target magnetron sputtering deposition system.The coating thickness was about 1.8μm and 2μm,respectively.The friction testing machine was used to test the relationship between COF and time.The matching pair was PEEK ball with a diameter of 6 mm.The coating wear rate was calculated by 3D profilometer.The wear volume of three kinds of matching PEEK balls was calculated according to the volume of the crown.The physical and chemical states of the coatings were characterized by SEM,Raman and FTIR,etc.,and the wear mechanism between the coatings and PEEK was analyzed.The results showed that both CrN and Cr/GLC multi-layer coatings could improve the friction properties when they were matched with PEEK.Compared with stainless steel,the COF of CrN and Cr/GLC coatings reduced significantly.The wear rate of CrN coating and Cr/GLC coating decreased 93.1%and 97.4%.The wear volume for counterpart PEEK dec

关 键 词：硬质涂层 非晶碳 石墨相 聚醚醚酮 摩擦 结晶度 

分 类 号：TG115.58[金属学及工艺—物理冶金]