Differences in nano-topography and tribochemistry of ZDDP tribofilms from variations in contact configuration with steel and DLC surfaces

Čoga, Lucija (avtor), Akbari, Somayeh (avtor), Kovač, Janez (avtor), Kalin, Mitjan (avtor)

In this work, we evaluated the effect of the counter-body material (the same or dissimilar) and contact configuration (moving or stationary body), at similar contact tribological conditions, on the tribochemical and nanotopography characteristics of adsorbed surface films. Zinc dialkyldithiophosphate (ZDDP), the best performing anti-wear additive, was used in self-mated steel/steel and DLC/DLC contacts, which were compared with mixed steel/DLC and DLC/steel contacts in 1-h and 6-h sliding tests. The macroscale (tribometer) and nanoscale (atomic force microscopy) friction, thickness, topography, and chemical (attenuated total reflection-Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy) properties of the tribofilms were studied. The results revealed unexpectedly large differences in all the studied tribofilm parameters; this is because all the tribofilms are completely different; this includes the chemical composition, which is known to have a crucial effect on the nano- and macro-scale tribological properties. These results clearly demonstrate that the surface material, additives, and common contact operating parameters, that is, pressure, velocity, and temperature, crucially affect the ZDDP tribofilm as well as the position of the moving or stationary surface within the contact, and the material of the moving/stationary bodies.

• Jezik: Angleški jezik
• Ključne besede: dithiophosphate, diamond-like carbon, steels, tribofilms, tribochemistry, nano-friction, thickness, topography
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: Str. 296–315
• Številčenje: Vol. 10, iss. 2
• PID: 20.500.12556/RUL-134679
• UDK: 539.92
• ISSN pri članku: 2223-7690
• DOI: 10.1007/s40544-021-0491-7
• COBISS.SI-ID: 88250627
• Datum objave v RUL: 25.01.2022

Gradivo je del revije

• Naslov: Friction
• Skrajšan naslov: Frict.
• Založnik: Tsinghua University Press
• ISSN: 2223-7690
• COBISS.SI-ID: 525351449

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 10.04.2021
• Vezano na: Published online

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: dithiofosfat, diamantu podoben ogljik, jekla, tribofilmi, tribokemija, nanotrenje, debelina, topografija

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0231
• Naslov: Tribologija

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: J2-7115
• Naslov: Nanoinženiring kontaktnih površin in mejnih filmov za doseganje zelenih tehnologij mazanja