Magnetic Low-Friction Track

When applying coatings using various methods on the surfaces of moving parts that work in joints, it is important to make sure that the coatings are strong and wear-resistant in order to return them to their original resource. All existing hardening technologies and materials used to perform coatings have their own characteristics, therefore, the quality of the resulting coatings can be judged only after specific tests. (Research purpose) The research purpose is in evaluating the properties of the coating obtained by the method of electric spark hardening, and its ability to resist friction and mechanical wear. (Materials and methods) Authors conducted tests on the basis of the "Nano-Center" center for collective use. A coating was applied on the BIG-4M unit with a VK-8 hard alloy electrode, tribological properties were evaluated on a CSM Instruments TRB-S-DE-0000 tribometer, the width of the friction track was measured after the test using an inverted OLYMPUS gx51 optical microscope, and samples were weighed before and after the test on a VLR-200 analytical balance. Conducted research in accordance with GOST 23.224-86 and RD 50-662-88 guidelines. (Results and discussion) The article presents performed tests on the run-in and wear resistance of the coating. The samples were worked on with a step-by-step increase in the load. During the tests, the friction force was drawed on the diagram. Authors compared the results with the reference sample, an uncoated surface. (Conclusions) The resulting coating has better run-in and wear resistance compared to the standard, and the increase in wear resistance in dry friction conditions is very significant.

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Modelling for water-based liquid lubrication with ultra-low friction coefficient in rough surface point contact

Tribology International ◽

10.1016/j.triboint.2019.105901 ◽

2020 ◽

Vol 141 ◽

pp. 105901 ◽

Cited By ~ 1

Author(s):

Yanfei Fang ◽

Liran Ma ◽

Jianbin Luo

Keyword(s):

Friction Coefficient ◽

Rough Surface ◽

Point Contact ◽

Surface Point ◽

Low Friction ◽

Water Based

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Friction of Metals: A Review of Microstructural Evolution and Nanoscale Phenomena in Shearing Contacts

Tribology Letters ◽

10.1007/s11249-021-01477-z ◽

2021 ◽

Vol 69 (4) ◽

Author(s):

Michael Chandross ◽

Nicolas Argibay

Keyword(s):

Shear Strength ◽

Grain Boundary Sliding ◽

Deformation Mechanisms ◽

Low Friction ◽

Friction Behavior ◽

Important Conclusion ◽

Fundamental Properties ◽

Wide Range ◽

Boundary Sliding ◽

Metal Interfaces

AbstractThe friction behavior of metals is directly linked to the mechanisms that accommodate deformation. We examine the links between mechanisms of strengthening, deformation, and the wide range of friction behaviors that are exhibited by shearing metal interfaces. Specifically, the focus is on understanding the shear strength of nanocrystalline and nanostructured metals, and conditions that lead to low friction coefficients. Grain boundary sliding and the breakdown of Hall–Petch strengthening at the shearing interface are found to generally and predictably explain the low friction of these materials. While the following is meant to serve as a general discussion of the strength of metals in the context of tribological applications, one important conclusion is that tribological research methods also provide opportunities for probing the fundamental properties and deformation mechanisms of metals.

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Anomalously low friction of confined monolayer water with a quadrilateral structure

The Journal of Chemical Physics ◽

10.1063/5.0053361 ◽

2021 ◽

Vol 154 (22) ◽

pp. 224508

Author(s):

JinChuan Li ◽

YinBo Zhu ◽

Jun Xia ◽

JingCun Fan ◽

HengAn Wu ◽

...

Keyword(s):

Low Friction

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