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W含量对CrWN涂层在干摩擦和油润滑下的摩擦学性能影响
引用本文:王莉,付志强,岳文,康嘉杰,朱丽娜,王成彪,屈盛官.W含量对CrWN涂层在干摩擦和油润滑下的摩擦学性能影响[J].稀有金属材料与工程,2019,48(7):2371-2378.
作者姓名:王莉  付志强  岳文  康嘉杰  朱丽娜  王成彪  屈盛官
作者单位:中国地质大学北京 工程技术学院,中国地质大学北京 工程技术学院,中国地质大学北京 工程技术学院,中国地质大学北京 工程技术学院,中国地质大学北京 工程技术学院,中国地质大学北京 工程技术学院,华南理工大学 机械与汽车工程学院
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
摘    要:利用扫描电子显微镜、X射线衍射仪、纳米压痕仪、3D形貌仪和往复式摩擦磨损试验机考察了W含量对CrWN涂层在干摩擦和PAO润滑条件下的摩擦学性能影响。结果发现:随W含量的增加,利用离子束辅助沉积技术制备的CrWN涂层显微结构从致密柱状晶变成粗大柱状晶,再变成纤维状晶。硬度随W含量的增加先增大后减小,当W含量为9.96 at.%时硬度最大。CrWN涂层在干摩擦条件下的摩擦系数随W含量的增加先减小后趋于不变,但在PAO润滑条件下的摩擦系数随W含量的增加逐渐减小。干摩擦下, 掺少量W元素会加重CrN涂层试样及其对磨球的磨损;但W掺杂显著改善CrN涂层试样及其对磨球在PAO润滑条件下的耐磨性。

关 键 词:CrWN  涂层  摩擦学性能  W含量  油润滑
收稿时间:2018/2/4 0:00:00
修稿时间:2018/4/15 0:00:00

Effect of W Content on Tribological Performance of CrWN Coating under Dry Friction and Oil Lubrication Conditions
Wang Li,Fu Zhiqing,Yue Wen,Kang Jiajie,Zhu Lin,Wang Chengbiao and Qu Shengguan.Effect of W Content on Tribological Performance of CrWN Coating under Dry Friction and Oil Lubrication Conditions[J].Rare Metal Materials and Engineering,2019,48(7):2371-2378.
Authors:Wang Li  Fu Zhiqing  Yue Wen  Kang Jiajie  Zhu Lin  Wang Chengbiao and Qu Shengguan
Institution:School of Engineering and Technology,China University of Geosciences Beijing,School of Engineering and Technology,China University of Geosciences Beijing,School of Engineering and Technology,China University of Geosciences Beijing,School of Engineering and Technology,China University of Geosciences Beijing,School of Engineering and Technology,China University of Geosciences Beijing,School of Engineering and Technology,China University of Geosciences Beijing,South China University of Technology,Mechanical and Automotive Engineering
Abstract:The effect of W content on the tribological properties of CrWN coatings under dry friction and PAO lubrication conditions was investigated by scanning electron microscope, X-ray diffractometer, nano-indentation tester, 3D profile-meter, and reciprocating tribometer. It was shown that the microstructure of CrWN coatings prepared by ion beam assisted deposition is changed from dense columnar crystals to coarse columnar crystals and then fibrous crystals. The hardness is first increased and then decreased with the increase of W content, and the maximum hardness is obtained when the W content is 9.96 at.%. Under dry friction condition, the friction coefficients of CrWN coatings are decreased first and then almost unchanged with the increase of W content; however, under PAO oil lubrication condition, the friction coefficients of CrWN coatings are gradually decreased with the increase of W content. Under dry friction, the introduction of W into CrN coatings at a low content will aggravate the wear of CrN-coated samples and their counterpart balls; but the wear resistance of CrN-coated samples and their counterpart balls is obviously improved by doping W.
Keywords:CrWN  coating  tribological performance  W content  oil lubrication
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