Muhammad Shahid Arshad (Avtor), Lucija Čoga (Avtor), Thomas M. Geue (Avtor), Janez Kovač (Avtor), Sandra Cruz (Avtor), Mitjan Kalin (Avtor)

Povzetek

This study investigates the use of 1,3-dimethylimidazolium dimethylphosphate ionic liquid (IL) additive in glycerol base oil for improving the lubrication-properties of tungsten-doped diamond-like carbon (WDLC) coatings. Tribological tests were conducted at various applied loads (5 N, 10 N, 20 N) and elevated temperature (100 °C), and the addition of 1 wt% of IL resulted in a significant reduction (∼50%) in friction-coefficient. In-situ neutron-reflectometry analysis revealed a multi-step tribofilm formation mechanism involving IL and W-clusters, resulting in the formation of a 1.24-nm thick tribofilm on the WDLC surface within the first 30-minutes of the friction experiment. The reaction kinetics for tribofilm formation are discussed involving dissociation of dimethylphosphate into dioxo-phosphate, which interacts with W-clusters to form tungsten phosphates and cations adsorbed on their surface.

Ključne besede

W-doping DLC coatings;ionic-liquid;friction;neutron reflectometry;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 539.92
COBISS: 150840579 Povezava se bo odprla v novem oknu
ISSN: 0301-679X
Št. ogledov: 142
Št. prenosov: 13
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: W-doping DLC premazi;ionska tekočina;trenje;nevtronska reflektometrija;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-11
Zvezek: ǂVol. ǂ185
Čas izdaje: 2023
DOI: 10.1016/j.triboint.2023.108550
ID: 18799040