SELF-LUBRICATING PROPERTIES OF THIN COATINGS BASED ON MOLYBDENUM DISULPHIDE
Journal Title: Tribologia - Year 2016, Vol 267, Issue 3
Abstract
The paper presents an analysis of the friction and wear processes of a composite coating based on molybdenum disulphide doped by tungsten and titanium, taking into account the impact of load and temperature in the contact zone. The tribological tests were performed at room temperature and at 300°C and 350°C in non-lubricated sliding contact with an Al2O3 ball. The characterization of the micromechanical properties and the adhesion of coatings to steel substrates were done by scratch testing. The analysis of the coatings wear and the sliding tribolayer formation was conducted by the observation of the friction track using light microscopy (LM) and scanning electron microscopy (SEM). The low hardness of the MoS2(Ti,W) coating, equal to 6 GPa, with the predominantly amorphous structure, allows for quick formation of the tribological contact and the sliding tribolayer creation. Due to self-lubricating properties, the coating has a high wear resistance and a low friction coefficient (below 0.1), both at room and elevated temperatures. The study allowed the determination of the operating temperature limit of the coating-substrate system in sliding point contact, which helped to specify the application area of such material.<br/><br/>
Authors and Affiliations
Sławomir ZIMOWSKI
Keywords
Related Articles
- EP ID EP246435
- DOI 10.5604/01.3001.0010.7353
- Views 54
- Downloads 0
GEOMETRIC STRUCTURE OF THE GEAR TEETH SIDE SURFACES AND THE PROCESS OF FATIGUE WEAR
This study investigates the geometric parameters of the gear teeth side surfaces, formed in the final stage of manufacturing and processing and their influence on the fatigue wear of the surface. Tests were run on gear t...
ANALYSIS OF THE TRIBOLOGICAL PROPERTIES OF TiN/Si3N4 NANOCOMPOSITE COATING IN SLIDING CONTACT WITH CERAMIC, STEEL, AND POLYMER COUNTERPART
In this work, the friction and wear of a hard TiN/Si3N4 nanocomposite coating in sliding contact with Al2O3 ceramic, 100Cr6 steel, and PTFE polymer balls were analysed. The coating was deposited on Vanadis 23 high-speed...
DETERMINING THE COEFFICIENTS OF THE PSEUDO-VISCOSITY OF ENGINE OILS
During the operation of the internal combustion engines, lubricating oils wear out. The following has a significant impact on that process wear of engine parts and contact of wearing elements with working oil, the destru...
ANALIZA WŁAŚCIWOŚCI TRIBOLOGICZNYCH NAPOIN Z ZAWARTOŚCIĄ NIOBU W GLEBOWEJ MASIE ŚCIERNEJ
W pracy przedstawiono badania intensywności zużycia warstw napawanych w zróżnicowanych warunkach glebowych. Badaniu poddano próbki wykonane ze stali 38GSA, na powierzchnię której nałożono napoiny. Określono właściwości t...
Ocena oddziaływań pomiędzy ekologicznym dodatkiem smarnym i dodatkami przeciwutleniającymi w syntetycznej bazie olejowej
Przedstawiono wyniki badań właściwości smarnych i termooksydacyjnych dwui trójskładnikowych kompozycji smarowych na bazie syntetycznego oleju estrowego, uzupełnionych dodatkami o charakterze smarnym (PE) oraz przeciwutle...