Effect of Serpentine/Nano-Cu Composites as lubricant Additive on Tribological Properties of Tin Bronze

被引：0
|
作者：
Yin Y. [1 ]
Yu H. [1 ]
Wang H. [1 ]
Wei M. [2 ]
Shi P. [2 ]
Bai Z. [3 ]
Zhang W. [2 ]
机构：
[1] National Key Laboratory for Remanufacturing, Army Academy of Armored Force, Beijing
[2] Hebei Jingjinji Institute of Remanufacturing Industry & Technology, Hejian
[3] School of Materials Science and Technology, China University of Geosciences, Beijing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2023年 / 59卷 / 18期
关键词：
composites additives; nano-Cu; serpentine; tin bronze; tribological behaviors;
D O I：
10.3901/JME.2023.18.054
中图分类号：
学科分类号：
摘要：
The effect of surface organic modified serpentine and nano-Cu composites as lubricant additive on tribological properties of tin bronze matching with GCr15 steel is investigated by SRV oscillating sliding wear tester. Scanning electron microscope (SEM), X-ray energy dispersive spectroscopy(EDS), X-ray photoelectron spectroscopy(XPS), and nanoindenter are used to analyze the morphology of surface and section, elemental composition, chemical state, and nano mechanical properties of worn surfaces. The friction reducing and anti-wear mechanism of serpentine and nano-Cu composites on tin bronze and their synergistic action mechanism are discussed. Results show that single component serpentine and nano-Cu additives can improve tribological properties of tin bronze, and the improvement effect is significantly enhanced after serpentine and nano-Cu compounded, and the friction coefficient and wear volume of tin bronze are reduced by 26.3%～39.2% and 72.6%～88.9% respectively, compared with base oil lubrication. Serpentine and nano-Cu play a positive role in tribology, and a composite self-repairing film composed of metal oxide, silicon oxide, sulfide, graphite, organic matter and nano-Cu particles is formed on the tin bronze surface. The self-repairing film has a multilayer and it is dense and smooth, with the thickness of 3.73 μm, and its nanohardness, elastic modulus and nanohardness/modulus have the gradient variation that low in the surface and high in the subsurface, as contributed to the improvement of the tribological behaviors of tin bronze. © 2023 Editorial Office of Chinese Journal of Mechanical Engineering. All rights reserved.
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页码：54 / 68
页数：14
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