On the Friction Mechanisms and Assessment of Tribological Characteristics of Solid Lubricant Coatings of Various Application Methods-Reference-Cited by-同舟云学术

On the Friction Mechanisms and Assessment of Tribological Characteristics of Solid Lubricant Coatings of Various Application Methods

Published:2022-04 Issue:4 (745) Volume: Page:73-86
ISSN:0536-1044
Container-title:Proceedings of Higher Educational Institutions. Маchine Building
language:
Short-container-title:PoHEI.MB

Author:

Khopin P.N.¹

Affiliation:

1. Moscow Aviation Institute

Abstract

The article analyzes the wear dynamics of solid lubricant coatings (SLC) of suspension, magnetron-high-frequency and diffusion methods of application. Calculated dependences are presented to assess the tribotechnical characteristics of the SLC. It was found that the service life of SLC based on MoS2 HF application in the considered ranges of surface temperature variations differs slightly from the that of SLC suspension application VNII NP 212. The wear of diffusion SLC M804 (Dimolit-4) in the steady-state friction mode is 34 µm. The wear rate of diffusion SLC М804 under vacuum conditions at a sliding speed of V = 0.2 m/s with the increase in contact pressure from 1 to 8 MPa increases by a factor of 2 and is on average 4.5 times higher than that of friction pairs with SLC VNII NP 212. Anti-friction characteristics of diffusion SLC in steady state friction modes at temperatures up to 600 °C were slightly higher than the similar characteristics for SLC with a binder. With an increase in heating temperatures to the limiting value of 800 °C, the friction coefficient of the diffusion SLC M801 and M810 (based on NbS2) decreases to the values of ffr = 0.03–0.04.

Publisher

Bauman Moscow State Technical University

Subject

General Engineering

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