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

Journal Article


Abstract


  • 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.

Publication Date


  • 2020

Citation


  • Wang, L., Tieu, A. K., Zhu, Q., Chen, J., Cheng, J., Yang, J., & Kosasih, B. (2020). Achieving the excellent self-lubricity and low wear of TiAl intermetallics through the addition of copper coated graphite. Composites Part B: Engineering, 198. doi:10.1016/j.compositesb.2020.108223

Scopus Eid


  • 2-s2.0-85087333772

Volume


  • 198

Abstract


  • 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.

Publication Date


  • 2020

Citation


  • Wang, L., Tieu, A. K., Zhu, Q., Chen, J., Cheng, J., Yang, J., & Kosasih, B. (2020). Achieving the excellent self-lubricity and low wear of TiAl intermetallics through the addition of copper coated graphite. Composites Part B: Engineering, 198. doi:10.1016/j.compositesb.2020.108223

Scopus Eid


  • 2-s2.0-85087333772

Volume


  • 198