| Issue |
MATEC Web Conf.
Volume 226, 2018
XIV International Scientific-Technical Conference “Dynamic of Technical Systems” (DTS-2018)
|
|
|---|---|---|
| Article Number | 01006 | |
| Number of page(s) | 6 | |
| Section | 1 Fundamentals of mechanics, dynamics and tribology of machines | |
| DOI | https://doi.org/10.1051/matecconf/201822601006 | |
| Published online | 07 November 2018 | |
Tribological properties of experimental hard alloys in conditions of friction on structural steel without lubricant
1 Don State Technical University, 344000 Rostov-on-Don Gagarina sqr. 1, Russia
2 State Scientific Establishment “Agriculture research center “Donskoy”, North Caucasus Institute of Mechanization and Electrification of Agriculture, 347740 Zernograd, Russia
* Corresponding author: fominoff83@mail.ru
Tribological properties of the experimental grades of high entropy hard alloys with modified binding phase on cobalt, which are characterized by minimal value of absolute t.m.f. to carbide phase, were experimentally investigated. It was established experimentally that new grades obtain better friction characteristics in comparison with the base alloy grade VK8 because friction processes of these materials in contact with structural steels are characterized by lower friction forces and lower temperatures in the friction zones. The ‘third body’ which is thicker than for the base alloy grade VK8, obtains a positive gradient of mechanical properties in friction zone, has a shielding effect, reduces the rate of generation of adhesive joints (welding bridges), and, perhaps, performs the role of dry lubrication.
© The Authors, published by EDP Sciences, 2018
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