Tribological properties of MoS2 nano-flowers supported by porous alumina aperture array. (September 2021)

• Record Type: Journal Article
• Authors: He, Jiawei; Zhou, Wenyuan; Chen, Shuqun; Wu, Anran; Zhou, Yuqing; Chen, Yanhui; Wang, Jinshu; Li, Hongyi
• Is Part Of: Tribology international. Volume 161(2021)
• Publication Date: 2021-09
• Subjects: Molybdenum disulfide -- AAO aperture array -- MoS2 nano-flowers -- Magnetron sputtering; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2021.107093
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: Molybdenum disulfide coated aluminum alloys are of great interests in recent years due to their wide application in the space field. In this paper, a 350–400 nm-thick MoS2 film with nano-flowers structure was produced on Porous anodic aluminum oxide (AAO)/Al substrate by magnetron sputtering. It is found that AAO aperture array on aluminum alloy could enhance the resistance of stress and deformation for aluminum matrix, and store the MoS2 within the aperture during friction, resulting into prolonged lubrication time. Significant improvement in the lubrication performance (316.6 ×) at low friction coefficient (0.15) was realized compared with MoS2 /Al structure, and the wear rate decreased by ~98%. Our findings could provide new routes of surface modification for aluminum alloys in aerospace field. Graphical Abstract: ga1 Highlights: MoS2 /AAO/Al composite structure was synthesized by using two-step anodization and RF magnetron sputtering. Compared with MoS2 /Al structure, the lubrication time of MoS2/AAO/Al structure enhanced 316.6 times. The wear rate of MoS2 /AAO/Al structure was reduced by nearly two orders of magnitude, compared to MoS2 /Al structure.