Assessment of the influence of oxygen incorporation on the compositional, structural, mechanical and tribological performance of ternary MoSeC coatings

Yaqub, Talha Bin (avtor), Fernandes, Filipe Daniel (avtor), Al-Rjoub, Abbas (avtor), Kumar, Parveen (avtor), Nadeem, Irfan (avtor), Kos, Saša (avtor), Gudžulić, Tara (avtor), Cavaleiro, Albano (avtor), Kalin, Mitjan (avtor)

The influence of intentional oxygen incorporation in recently developed ternary C-alloyed molybdenum diselenide (MoSeC) coatings has never been investigated. This study addresses this gap by systematically incorporating varying oxygen contents into MoSeC coatings, with the aim of identifying the impact on the structural, mechanical and sliding properties. MoSeC–O coatings with oxygen content in the range of 0 - 21.5 at % were deposited using reactive direct current magnetron sputtering (DCMS). The developed coatings were compact with cauliflower-like surface morphologies. The X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) showed that the crystallinity decreased with the introduction of oxygen in the MoSeC coating. The X-ray photoelectron spectroscopy (XPS) chemical bonding investigation confirmed the presence of Mo–O bonds, indicating partial oxidation of Mo. Up to 6.9 at %, the hardness, reduced Young´s modulus, friction and wear showed only minor changes. However, beyond this level, these properties deteriorated substantially. The Raman spectroscopy of the wear tracks revealed formation of low friction MoSe▫$_{2}$▫ tribolayer as the dominant friction reduction mechanism. Whereas, higher oxygen content suppressed the formation of effective tribolayer due to excessive oxidation and loss of MoSe▫$_{2}$▫ crystallinity, in agreement with the structural and chemical bonding results. Overall, the results indicate that a moderate oxygen content can be tolerated in MoSeC coatings, which may allow for more relaxed vacuum and purity conditions during deposition, offering a more cost effective and industrial friendly synthesis route.

• Jezik: Angleški jezik
• Ključne besede: transition metal dichalcogenide, MoSe2, MoSeC coatings, oxygen incorporation, magnetron sputtering
• 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: 2026
• Št. strani: 19 str.
• Številčenje: Vol. 32, art. 112310
• PID: 20.500.12556/RUL-185733
• UDK: 539.92:621.793
• ISSN pri članku: 2590-1230
• DOI: 10.1016/j.rineng.2026.112310
• COBISS.SI-ID: 288173571
• Datum objave v RUL: 19.08.2026

Gradivo je del revije

• Naslov: Results in engineering
• Založnik: Elsevier
• ISSN: 2590-1230
• COBISS.SI-ID: 529862681

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.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: prehodni kovinski dikalkogenidi, MoSe2, MoSeC prevleke, vgradnja kisika, magnetronsko naprševanje