Role of interfacial shear strength in nanotribological behaviour of PTA deposited Colmonoy 6 coating on SS304 steel

Pratap Singh, V and Kumar, D and Mahesh, V and Harursampath, D and Kuriachen, B (2023) Role of interfacial shear strength in nanotribological behaviour of PTA deposited Colmonoy 6 coating on SS304 steel. In: Materials Letters, 353 .

PDF mat_let_353_2023.pdf - Published Version Restricted to Registered users only Download (5MB) | Request a copy

Abstract

Using an atomic force microscope, the nano-scale tribological behavior of Colmonoy 6 (Ni-Cr-Si-B) coating deposited over SS304 steel using plasma transferred arc (PTA) cladding technique was studied. The coating primarily confirmed the presence of the second phases Cr6B3, Ni4B3, and Ni2B, which contributed to both dispersion and solid solution strengthening. Despite being four times harder than the substrate, the coating demonstrated increased wear and friction. The low wear resistance of the developed coating was due to their high interfacial shear strength, as determined by additional wear-less AFM experiments. Overall, the wear and friction behavior at nano-scale were found to be governed by interfacial shear strength rather than material hardness. © 2023 Elsevier B.V.

Item Type:	Journal Article
Publication:	Materials Letters
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to the Elsevier B.V.
Keywords:	Chromium alloys; Friction; Hard facing; Nanotechnology; Plasma welding; Silicon alloys; Tribology; Wear of materials; Wear resistance, Atomic force; Atomic-force-microscopy; Colmonoy 6; Interfacial shear strength; Nano scale; Plasma transferred arc; Plasma transferred arc cladding; Ss304; Tribological behaviour; Wear and friction, Coatings
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	24 Nov 2023 11:18
Last Modified:	24 Nov 2023 11:18
URI:	https://eprints.iisc.ac.in/id/eprint/83291

Actions (login required)

View Item