Alumina/GNPs coating on textured WC/Co substrate: microstructure and tribology

Sun, Junqiang; Liu, Changxia; Venturi, Federico; Romero, Acacio Rincon; Hussain, Tanvir

Abstract

This work aims to provide a method for improving the tribological properties of WC/Co substrates. Laser surface texturing technology was employed to fabricate micro-grooves on the substrate surfaces. Suspension high velocity oxy fuel thermal spraying technique was used to deposit 99 wt-% alumina + 1 wt-% graphene nanoplatelets (GNPs) coating on the substrate surface with micro-grooves. Characterisations such as micromorphology, composition analysis and tribological performance were examined. Results showed that the morphology of the laser prepared micro-groove consisted of two hills and one valley. The grid-textured samples sprayed with alumina/GNPs coating showed the lowest coefficient of friction and wear rate, which was benefited from the larger texture density and the friction reduction of GNPs lubrication film.

Citation

Sun, J., Liu, C., Venturi, F., Romero, A. R., & Hussain, T. (2024). Alumina/GNPs coating on textured WC/Co substrate: microstructure and tribology. Materials Science and Technology, 40(10), 782-798. https://doi.org/10.1177/02670836231223800

• Journal Article Type: Article
• Acceptance Date: Dec 24, 2023
• Online Publication Date: Jan 8, 2024
• Publication Date: Jan 8, 2024
• Deposit Date: Feb 5, 2024
• Journal: Materials Science and Technology
• Print ISSN: 0267-0836
• Electronic ISSN: 1743-2847
• Publisher: Taylor and Francis
• Peer Reviewed: Peer Reviewed
• Volume: 40
• Issue: 10
• Pages: 782-798
• DOI: https://doi.org/10.1177/02670836231223800
• Keywords: SHVOF, graphene nanoplatelets; WC/Co; tribological behaviour, micro-texture
• Public URL: https://nottingham-repository.worktribe.com/output/30106236
• Publisher URL: https://journals.sagepub.com/doi/10.1177/02670836231223800