The selection and development of tribological coating

Null Author_Id ,L Lopata,Yuri V Brusilo ,M Holovashuk,Yu A Kharlamov

doi:10.31891/2079-1372-2021-102-4-68-74

Abstract

The strategy and methodology for selecting of optimal surface treatment for a given tribological application are the main objectives of study. The classification of main methods of coating processes and surface modification is given. The scheme of development of operation technology of surface treatment and coating deposition is proposed. The main initial data: the structure of tribological system (TrS); individual properties of TrS parts; lubricant properties; method of lubrication of TrS parts; properties of surrounding environment; external influences on TrS; technological limitations on TrS parts treatment; managerial and economical limitations. The selection of surface technology method is including the next successive steps: the preliminary analysis of TrS part interaction; development of models of friction and wear process of TrS parts; the choice of rational values of parameters of surface layers of TrS parts; the choice of rational composition and structure parameters of surface layers of TrS parts; the choice of rational technological route and methods of surface treatment of TrS parts; the experimental examination of surface strengthened materials and TrS and correction of surface treatment technology

Highlights

The use of surface engineering methods in tribological applications is growing and will continue to grow as evidenced by a literature survey [1,2,3,4,5,6,7,8,9]
Surface treatment as coatings and films deposition and modification of surface layers can offer certain economic and technical advantages over the use of materials without the surface strengthen treatment. Their main advantage is that strengthen surface layers allow the base material of tribological system (TrS) parts to be optimized for strength purposes while the surface layer is optimized for reducing wear and increasing corrosion resistance, promoting film lubrication, enhancing lubricant effectiveness, modification surface function, etc
The principal disadvantage in using coatings concerns the possibility of separation from the base material of TrS part during use

Summary

Introduction

The use of surface engineering methods in tribological applications is growing and will continue to grow as evidenced by a literature survey [1,2,3,4,5,6,7,8,9]. The main categories of coating deposition processes are: Electroplating; Electrophorus; Electroless plating; Welding; Thermal spraying; Physical Vapor Deposition; Chemical Vapor Deposition (CVD); Immersion on melt; Electro-spark alloying; Electro-magnetic alloying; Bonding of powder layers; Solid phase plating (bonding of plates); Painting; Continuous deposition of films in process of friction (rotaprint, from environment, etc.) ; Others. Some of these application processes are very simple and inexpensive such as painting. Stsj Pmpcj Pmpsj Ptpcj Ptpsj ...., where index mark “j” is given for certain kind of surface treatment

Methodology surface engineering methods selection

Conclusion