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W含量對CrWN涂層在干摩擦和油潤滑下的摩擦學性能影響
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1.中國地質(zhì)大學北京 工程技術(shù)學院;2.華南理工大學 機械與汽車工程學院

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國家自然科學基金項目（面上項目，重點項目，重大項目）


Effect of W Content on Tribological Performance of CrWN Coating under Dry Friction and Oil Lubrication Conditions
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1.School of Engineering and Technology,China University of Geosciences Beijing;2.South China University of Technology,Mechanical and Automotive Engineering

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    摘要:

    利用掃描電子顯微鏡、X射線衍射儀、納米壓痕儀、3D形貌儀和往復式摩擦磨損試驗機考察了W含量對CrWN涂層在干摩擦和PAO潤滑條件下的摩擦學性能影響。結(jié)果發(fā)現(xiàn)：隨W含量的增加，利用離子束輔助沉積技術(shù)制備的CrWN涂層顯微結(jié)構(gòu)從致密柱狀晶變成粗大柱狀晶，再變成纖維狀晶。硬度隨W含量的增加先增大后減小，當W含量為9.96 at.%時硬度最大。CrWN涂層在干摩擦條件下的摩擦系數(shù)隨W含量的增加先減小后趨于不變，但在PAO潤滑條件下的摩擦系數(shù)隨W含量的增加逐漸減小。干摩擦下， 摻少量W元素會加重CrN涂層試樣及其對磨球的磨損；但W摻雜顯著改善CrN涂層試樣及其對磨球在PAO潤滑條件下的耐磨性。

    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.

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王莉,付志強,岳文,康嘉杰,朱麗娜,王成彪,屈盛官. W含量對CrWN涂層在干摩擦和油潤滑下的摩擦學性能影響[J].稀有金屬材料與工程,2019,48(7):2371~2378.[Wang Li, Fu Zhiqing, Yue Wen, Kang Jiajie, Zhu Lina, Wang Chengbiao, 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.]
DOI：10.12442/j. issn.1002-185X.20180134

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  • 收稿日期:2018-02-04
  • 最后修改日期:2018-04-15
  • 錄用日期:2018-04-27
  • 在線發(fā)布日期: 2019-08-01
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