Exploring the atmospheric tribological properties of MoS2-(Cr, Nb, Ti, Al, V) composite coatings by high throughput preparation method. (April 2021)

• Record Type: Journal Article
• Authors: Lu, Xiaolong; Yan, Mingming; Yan, Zhen; Chen, Wenyuan; Sui, Xudong; Hao, Junying; Liu, Weimin
• Is Part Of: Tribology international. Volume 156(2021)
• Publication Date: 2021-04
• Subjects: MoS2 composite coating -- High-throughput method -- Atmospheric tribological properties -- Element doping; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2020.106844
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: The high-throughput preparation of MoS2 -(Cr, Nb, Ti, Al, V) composite coatings was achieved by multi-targets co-sputtering method. Based on the obtained friction coefficient of 236 samples as the criterion, four samples with the largest difference in friction coefficient were screened out for further detailed investigations. The results demonstrated that high metal doping amount can dense the coating and reduce the particle size. As the doping content increased, the coating transformed from nanocrystalline to amorphous structure. Consequently, MoS2 -(Cr, Nb, Ti, Al, V) composite coatings with high doping levels presented higher hardness and better atmospheric tribological properties. Moreover, the Cr and Al dopants can better inhibit the oxidation of MoS2 than Nb, Ti and V dopants owing to the denser oxide films. Highlights: More than two hundreds of doped MoS2 coatings are prepared by high throughput preparation. The coatings with high doping contents own higher hardness and better tribological properties. As the doping content increases, the coating transform from nanocrystalline to amorphous structure. The Cr and Al dopants can better inhibit the oxidation of MoS2 than Nb, Ti and V dopants. The P8 sample owns a friction coefficient of about 0.03 and wear rate of 3.16 × 10 −7 mm 3 /(N.m).