石油炼制与化工 ›› 2020, Vol. 51 ›› Issue (5): 55-59.

• 油品与添加剂 • 上一篇    下一篇

蛇纹石/纳米软金属在复合锂基润滑脂中的摩擦学性能研究

夏延秋,陈川   

  1. 华北电力大学能源动力与机械工程学院
  • 收稿日期:2019-12-02 修回日期:2019-12-25 出版日期:2020-05-12 发布日期:2020-05-28
  • 通讯作者: 夏延秋 E-mail:1273409989@qq.com
  • 基金资助:
    国家自然科学基金;北京市自然科学基金

TRIBOLOGICAL PROPERTIES OF SERPENTINE POWDER/SOFT METAL NANOPARTICLES AS COMPLEX LITHIUM-BASED GREASE ADDITIVE

    

  1.  
  • Received:2019-12-02 Revised:2019-12-25 Online:2020-05-12 Published:2020-05-28
  • Supported by:
     

摘要: 以蛇纹石和纳米软金属(银、镍、铜)复配作为添加剂,采用往复摩擦磨损试验机考察不同复配体系添加剂在复合锂基润滑脂(简称润滑脂)中的减摩抗磨性能,用扫描电子显微镜和能谱仪分析表征磨痕表面的形貌和主要元素组成。结果表明:蛇纹石和纳米软金属复配作为添加剂可以有效改善润滑脂的减摩抗磨性能,3种复配体系中,当蛇纹石/银、蛇纹石/镍、蛇纹石/铜的质量比分别为4∶1,2∶1,4∶1时,润滑脂的减摩抗磨性能最好;在不同载荷条件下,蛇纹石/银润滑脂的摩擦学性能优于蛇纹石/镍润滑脂和蛇纹石/铜润滑脂。

关键词: 蛇纹石, 软金属, 润滑脂, 摩檫学性能

Abstract: Serpentine powder and soft metal nanoparticles (Ag, Ni and Cu) were used as lubricating greases additives. The tribological properties of the complex lithium-based grease containing various mass ratios of Serpentine powder to soft metal nanoparticle were investigated by reciprocating friction and wear tester. Scanning electron microscope and energy-dispersive X-ray spectroscopy were employed to analyze the worn surfaces and typical elements. The results showed that the composite powder could improve the tribological performance of the complex lithium-based grease. When the mass ratio of serpentine powder to nano particle of sliver, nickel and copper was 4∶1, 2∶1 and 4∶1, respectively, the lubricating greases showed the optimum tribological properties. Under different loads, the Serpentine powder/nano-sliver lubricating grease had the best friction reduction and anti-wear performance than Serpentine powder/ nano-nickel and serpentine powder/ nano-copper lubricating greases.

Key words: serpentine, soft metal, lubricating grease, tribological property

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