Improving the Wear Resistance of Piston Rings of Internal Combustion Engines when Using Ion-Plasma Coatings
- 1 July 2020
- journal article
- Published by Trans Tech Publications, Ltd. in Key Engineering Materials
- Vol. 854, 133-139
- https://doi.org/10.4028/www.scientific.net/kem.854.133
Abstract
Modern designs of piston rings of internal combustion engines and wear-resistant coatings used for them are considered. It is noted that the upper (compression) ring undergoes the most intense wear. Among the traditionally used wear-resistant coatings of compression rings, galvanic chrome plating and thermal spraying with molybdenum are most often used. The paper proposes the use of the ion-plasma spraying method for applying hard wear-resistant coatings to the working surface of piston rings based on titanium and molybdenum nitrides. The specified method relates to vacuum coating technologies (PVD methods), in which layers of high-strength materials are sprayed directly onto the surface of the product. The present work aimed to carry out comparative tribotechnical tests of piston ring samples having hard coatings obtained by ion-plasma spraying and to compare them with traditional galvanic chromium plating. A technique has been developed for a comprehensive assessment of comparative tribological characteristics, including the critical load during testing, the specific load of seizing, the coefficients of friction, scoring resistance, and wear resistance. The test results of samples with the galvanic coating with chromium, ion-plasma spraying with titanium nitride, and molybdenum nitride are shown. In contrast, it is shown that samples with an applied ion-plasma coating surpass samples that are electrolytically chrome plated by all tribological parameters. The results obtained allow concluding that the ion-plasma coating of molybdenum nitride is promising for piston rings, as well as other critical parts of internal combustion engines.This publication has 16 references indexed in Scilit:
- Effect of piston ring geometries on lubrication and friction in diesel engineJournal of Physics: Conference Series, 2019
- Creating a model of diffusion deposition of metal coatings from melts of low-melting metalsIOP Conference Series: Materials Science and Engineering, 2019
- Dimensional analysis of the manufacturing processes of axisymmetric partsIOP Conference Series: Materials Science and Engineering, 2019
- Influence of W Addition on Microstructure and Mechanical Properties of Al-12%Si AlloysMaterials, 2019
- The Influence of a Piston Ring Coating on the Wear and Friction Generated during Linear OscillationLubricants, 2019
- Assessment of laser marking contrast with profilometerIOP Conference Series: Earth and Environmental Science, 2018
- The Formation of Surface Roughness of Piston Rings for the Purpose of Improving the Adhesion of Wear-Resistant CoatingsKey Engineering Materials, 2017
- Integrated Quality Ensuring Technique of Plasma Wear Resistant CoatingsKey Engineering Materials, 2017
- The influence of non-vacuum electron-beam facing on the structure of Ti-Ta layers formed on the surface of VT1-0 alloyIOP Conference Series: Materials Science and Engineering, 2016
- Study on Tribology Performance of Diesel Engine Oil Using SRV4 TribometerTribology Online, 2015