Development of the Composition and Modes of Spraying Antifriction Coating Reinforced with Quasicrystals for the Manufacture of Sliding Bearings

Silchenko Olga Borisovna,Siluyanova Marina Vladimirovna

doi:10.11648/j.ajetm.20190406.11

Abstract

The paper presents the compositions of coatings from composite materials reinforced with quasicrystals. The composition and mode of application of cold gas-dynamic deposition of antifriction coating based on composite materials reinforced with quasicrystals for the manufacture of sliding bearings have been determined and determined. Quasicrystals of the Al-Cu-Fe system, metal composite coatings based on copper reinforced with quasicrystal line particles were used for research. In the course of the work, the compositions of quasicrystal-reinforced coatings were developed, the optimal composition and modes of applying the coating by cold gas-dynamic spraying were determined. According to the optimal mode, samples were made and their mechanical and tribological properties were investigated.

Highlights

In tribology and materials science of anti-friction composites, a number of problems can be distinguished, reflecting current trends in this field of knowledge, the solution of which is necessary to ensure scientific and technical progress
The greatest efforts of the developers are focused on the creation of polymeric antifriction materials intended for work in the mode of hydrodynamic friction
The main technical advantages when working in an environment of oil antifriction materials based on metal polymers, ceramopolymers and composite materials is the smaller difference between static and dynamic friction coefficients, which significantly improves the dynamics of transients in machines, as well as quiet operation and low specific gravity

Summary

Introduction

In tribology and materials science of anti-friction composites, a number of problems can be distinguished, reflecting current trends in this field of knowledge, the solution of which is necessary to ensure scientific and technical progress. The main technical advantages when working in an environment of oil antifriction materials based on metal polymers, ceramopolymers and composite materials is the smaller difference between static and dynamic friction coefficients, which significantly improves the dynamics of transients in machines, as well as quiet operation and low specific gravity. The braking energy of highly loaded systems is released in the zone of friction and is converted into thermal energy and the energy of surface destruction. In this regard, antifriction materials must meet the following requirement: have a high thermal conductivity, low friction coefficient, stable to a temperature of 450-500°C, low parameters for wear, high elastic and strength characteristics. 2. Development of the Composition and Modes of Coating by the Method of Cold Gas-Dynamic Spraying. Testing the modes of application of the compositions of powder materials was carried out on flat

80 Silchenko Olga Borisovna and Siluyanova Marina Vladimirovna

Determination of Mechanical and Tribological Properties of the Coating

Conclusion