Effect of environments on the tribological behaviour of pure and graphene coated nickel against stainless steel counterpart

Date

2023

Advisors

Journal Title

Journal ISSN

ISSN

1749-785X

Volume Title

Publisher

InderScience Publishers

Type

Article

Peer reviewed

Yes

Abstract

Friction and wear are a major cause of failure experienced by the mechanical components. Service life of these components can be improved by the application of different surface modifications and lubricating techniques. In this research work, tribological investigation of pure and graphene coated nickel specimens, in contact with stainless steel ball was conducted using pin-on-disc (PoD) tribometer test setup. Multilayered graphene coatings, approximately 20 nm in thickness, were applied using atmospheric pressure chemical vapor deposition (APCVD). Tests were conducted under similar loading conditions in four different environments: dry ambient, distilled water, saline water (3% NaCl) and mineral oil. Maximum coefficient of friction (COF), wear debris and wear track width were observed when pure nickel specimens were tested under dry ambient conditions. Graphene coating caused significant reduction in COF as well as in the width of wear scars. A minimum COF of 0.05 was achieved in graphene coated specimens under dry and mineral oil environments. Abrasive wear was the dominant phenomenon in case of pure nickel and stainless steel tribopair, while adhesive wear was observed in graphene coated and stainless steel tribopair. Microscopic analysis also revealed corrosive phenomenon in NaCl environment.

Description

The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.

Keywords

graphene, nickel, coating, tribological, friction, wear, microscopic analysis

Citation

Zahra, I., Yong, S., Zeeshan, A., Meysam, A. and Ambreen, T. (2023) Effect of environments on the tribological behaviour of pure and graphene coated nickel against stainless steel counterpart. International Journal of Surface Science and Engineering,

Rights

Research Institute

Institute of Engineering Sciences (IES)