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Gradient DLC-based nanocomposite coatings as a solution to improve tribological performance of aluminum alloy

Journal Article


Abstract


  • The low hardness and poor tribological performance of aluminum alloy as moving component greatly restricts their wide applications in automotive fields. In this letter, an attempt to deposit gradient Ti/TiN/Si/(TiC/a-C:H) multi-layer on aluminum alloy is thus effectively performed by a combined arc ion plating and magnetron sputtering process based on the concept of involving coatings with a functionally graded interface. Multi-layered structure within DLC-based coatings has shown to significantly improve the load-bearing capacity, anti-wear and self-lubricating ability of Al alloys. The friction coefficient of gradient DLC-based coatings decreased to 0.18 under dry sliding condition while kept at 0.05 under the oil-lubricated conditions. The wear rate of gradient DLC multilayers was lower by two and even three orders of magnitude when compared with Al alloys both under dry wear and oil-lubricated conditions. Such gradient DLC-based coatings with good adhesion strength, high hardness, and excellent tribological performance are considered as potential protective surfaces of Al alloys for engine parts.

Authors


  •   Wang, Liping (external author)
  •   Wan, Shanhong
  •   Wang, S C. (external author)
  •   Wood, Robert J. K. (external author)
  •   Xue, Qunji (external author)

Publication Date


  • 2010

Citation


  • Wang, L., Wan, S., Wang, S. C., Wood, R. J. K. & Xue, Q. (2010). Gradient DLC-based nanocomposite coatings as a solution to improve tribological performance of aluminum alloy. Tribology Letters, 38 (2), 155-160.

Scopus Eid


  • 2-s2.0-77953683225

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4904

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 155

End Page


  • 160

Volume


  • 38

Issue


  • 2

Place Of Publication


  • Netherlands

Abstract


  • The low hardness and poor tribological performance of aluminum alloy as moving component greatly restricts their wide applications in automotive fields. In this letter, an attempt to deposit gradient Ti/TiN/Si/(TiC/a-C:H) multi-layer on aluminum alloy is thus effectively performed by a combined arc ion plating and magnetron sputtering process based on the concept of involving coatings with a functionally graded interface. Multi-layered structure within DLC-based coatings has shown to significantly improve the load-bearing capacity, anti-wear and self-lubricating ability of Al alloys. The friction coefficient of gradient DLC-based coatings decreased to 0.18 under dry sliding condition while kept at 0.05 under the oil-lubricated conditions. The wear rate of gradient DLC multilayers was lower by two and even three orders of magnitude when compared with Al alloys both under dry wear and oil-lubricated conditions. Such gradient DLC-based coatings with good adhesion strength, high hardness, and excellent tribological performance are considered as potential protective surfaces of Al alloys for engine parts.

Authors


  •   Wang, Liping (external author)
  •   Wan, Shanhong
  •   Wang, S C. (external author)
  •   Wood, Robert J. K. (external author)
  •   Xue, Qunji (external author)

Publication Date


  • 2010

Citation


  • Wang, L., Wan, S., Wang, S. C., Wood, R. J. K. & Xue, Q. (2010). Gradient DLC-based nanocomposite coatings as a solution to improve tribological performance of aluminum alloy. Tribology Letters, 38 (2), 155-160.

Scopus Eid


  • 2-s2.0-77953683225

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4904

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 155

End Page


  • 160

Volume


  • 38

Issue


  • 2

Place Of Publication


  • Netherlands