Microstructure and property of laser clad Ti2SC/TiS self-lubricating anti-wear composite coating on TA2 titanium alloy

Gao Lian Shi, Shao Hua Wu*, Xiao Long Lu, Xiu Bo Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The self-lubricating anti-wear composite coating was fabricated by preplacing Ti+TiC+WS2 mixed powders on TA2 titanium alloy using laser cladding technique. The phase composition, microstructure, microhardness and tribological properties of the coating were investigated. The results indicate that the coating is bonded metallurgically with the substrate and free from holes and cracks. The coating mainly consists of the matrix α-Ti, the reinforcement phases (Ti, W)C1-x and TiC, and the self-lubricating phases Ti2SC and TiS. The microhardness of the coating is 1005.4 HV, which is 5 times of that of the substrate. Due to the existence of the self-lubricating phases Ti2SC and TiS in the coating, the friction coefficient of the coating fluctuates more smoothly comparing to that of the TA2 alloy substrate. Furthermore, the worn surface of the coating presents slightly adhesive wear. The coating shows good anti-wear and friction reducing properties.

Original languageEnglish
Pages (from-to)198-202
Number of pages5
JournalCailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
Volume37
Issue number7
Publication statusPublished - 25 Jul 2016
Externally publishedYes

Keywords

  • Laser cladding
  • Solid lubrication
  • TA2 titanium alloy
  • Wear resistant composite coatings

Fingerprint

Dive into the research topics of 'Microstructure and property of laser clad Ti2SC/TiS self-lubricating anti-wear composite coating on TA2 titanium alloy'. Together they form a unique fingerprint.

Cite this