Effect of PAO-4 and MoDTC plus ZnDTP oil additive lubricants on the tribological performance of novel tetrahedral amorphous carbon (ta-C) coatings

• Published in: TRIBOLOGY INTERNATIONAL
• Main Authors: Mustafa, Mohd Muhyiddin Bin; Umehara, Noritsugu; Tokoroyama, Takayuki; Murashima, Motoyuki; Utsumi, Yoshiharu; Moriguchi, Hideki; Shibata, Akinori
• Format: Article
• Language: English
• Published: ELSEVIER SCI LTD 2024
• Subjects: Engineering
• Online Access: https://www-webofscience-com.uitm.idm.oclc.org/wos/woscc/full-record/WOS:001199404000001
• ISSN: 0301-679X; 1879-2464
• DOI: 10.1016/j.triboint.2024.109396

This study was carried out to assess the effect of PAO-4 and mineral oil mixed with MoDTC and ZnDTP on the tribological performance of novel tetrahedral -amorphous -carbon (ta-C) coatings namely P:ta-C, and M:ta-C, were analysed using the Pin -on -Disk Tribo-tester with a fixed normal load, temperature, sliding distance and speed of 20 N, 80 C-degrees, 250 m and 0.068 ms( -1) for 60 min, respectively. The C:ta-C, P:ta-C, and M:ta-C showed excellent wear resistance when lubricated with MoDTC + ZnDTP. The formation of weak Zn-derived tribofilm on the P:taC coating contributed to the strong wear resistance and reduced friction coefficient. Moreover, the passive transfer of ferrous compounds from the SUJ2 disk induced the development of weak Zn-derived tribofilm on the P:ta-C and M:ta-C.