Achieving the excellent self-lubricity and low wear of TiAl intermetallics through the addition of copper coated graphite

Authors

Long Wang, University of WollongongFollow
Anh Kiet Tieu, University of WollongongFollow
Qiang Zhu
Jiao Chen
Jun Cheng
Jun Yang
Buyung Kosasih, University of WollongongFollow

RIS ID

144234

Publication Details

Wang, L., Tieu, A., Zhu, Q., Chen, J., Cheng, J., Yang, J. & Kosasih, P. (2020). Achieving the excellent self-lubricity and low wear of TiAl intermetallics through the addition of copper coated graphite. Composites Part B: Engineering, 198

Abstract

© 2020 Elsevier Ltd The present work achieves excellent lubricity and low wear of TiAl intermetallics by the addition of low-cost copper-coated graphite. 50% reduction of friction and more than one magnitude lower wear rate were obtained. This superior tribological property is attributed to the formation of a soft tribo-film and a synergetic effect of in-situ formed harder TiC reinforcement. This tribo-film contains some graphite nanoplatelets, shell-like carbon, TiC particles and the mixture of some oxides. This work is helpful not only for the development of new solid self-lubricating composites but also promotes a scientific understanding of the tribo-film of solid lubricants.