Investigating the effects of long-term ambient air storage on the sliding properties of n-alloyed MoSe▫$_2$▫ coatings

Yaqub, Talha Bin (author), Nadeem, Irfan (author), Haq, Muhammad Aneeq (author), Yasir, Muhammad (author), Cavaleiro, Albano (author), Kalin, Mitjan (author)

Transition metal dichalcogenide coatings have emerged as potential candidates for terrestrial and aerospace mobility applications. Among these, the alloyed MoSe▫$_2$▫ coatings have displayed promising results while sliding in diverse environments. N-alloyed MoSe▫$_2$▫ coatings provide the additional benefit of overcoming the impact of PVD compositional variations on dry sliding, making them promising solid lubricants for mobility-sector applications. However, the impact of long-term storage has never been investigated for this rarely studied solid-lubricant system. This study investigates the tribological performance of direct current magnetron sputtered MoSeN coatings after 40 months of storage in an ambient atmosphere. Sliding tests were conducted under conditions consistent with pre-storage conditions. The results showed that coatings with 0 at. %, 22 at. %, 33 at. %, and 35 at. % N-alloying exhibited COF values nearly identical to the pre-storage results, with only a negligible increase in ~0.01. Similarly, all coatings displayed specific wear rates in the range of 10▫$^{-7}$▫, aligning with earlier findings. The obtained results show that the sliding performance of MoSeN coatings does not deteriorate over time, highlighting their suitability for critical aerospace applications, where components and assembled parts may be stored for years before launching into space or in actual applications.

• Language: English
• Keywords: MoSeN coatings, storage life cycle, solid lubricant, friction and wear, aerospace industry
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: 10 str.
• Numbering: Vol. 15, art. 414
• PID: 20.500.12556/RUL-168783
• UDC: 539.92:620.3
• ISSN on article: 2079-4991
• DOI: 10.3390/nano15060414
• COBISS.SI-ID: 234128387
• Publication date in RUL: 24.04.2025

Record is a part of a journal

• Title: Nanomaterials
• Shortened title: Nanomaterials
• Publisher: MDPI AG
• ISSN: 2079-4991
• COBISS.SI-ID: 523286297

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: MoSeN premazi, življenjski cikel shranjevanja, trdno mazivo, trenje in obraba, vesoljska industrija