Effect of CaF2 surface layers on the friction behavior of copper-based composite

被引:0
作者
K. Konopka
T. A. Roik
A. P. Gavrish
Yu. Yu. Vitsuk
T. Mazan
机构
[1] Warsaw University of Technology,
[2] National Technical University of Ukraine “Kiev Polytechnic Institute”,undefined
来源
Powder Metallurgy and Metal Ceramics | 2012年 / 51卷
关键词
high-speed bearings; solid lubricant; copper; process parameters; operating conditions; friction films; wear resistance;
D O I
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中图分类号
学科分类号
摘要
The paper studies the effect of the process parameters for the production of new copper-based bearing composite materials doped with nickel and molybdenum, with CaF2 additions (DN5M3KF9) as a solid lubricant, on the structurization and tribotechnical properties at high-speed friction (bearings perform at a sliding speed of 6 m/sec and a pressure up to 38.5 MPa in air). The study focuses on the distribution of CaF2 in the composite with a Cu–Ni–Mo matrix, its role in self-lubrication of the material, and the behavior of CaF2 in the friction area under extreme operating conditions. It is shown that the solid lubricant is evenly distributed over the contact surfaces as it piles up over the entire friction area during high-speed friction. It is established that the tribofilms formed in the presence of the CaF2 solid lubricant provide high wear resistance of copper-based materials.
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页码:363 / 367
页数:4
相关论文
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