Synthesis and characterization of Ni60-hBN high temperature self-lubricating anti-wear composite coatings on Ti6Al4V alloy by laser cladding

Xiao Long Lu, Xiu Bo Liu*, Peng Cheng Yu, Shi Jie Qiao, Yong Jie Zhai, Ming Di Wang, Yao Chen, Dong Xu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

117 Citations (Scopus)

Abstract

Ni60-hBN composite coatings with varying hBN content were prepared on Ti6Al4V substrates by laser cladding. The composite coatings with no cracks and few pores are bonded metallurgically with the substrates. The phase composition and microstructure of the composite coatings were investigated. The tribological properties of the composite coatings were evaluated under dry sliding wear test conditions at 20 °C, 300 °C and 600 °C, respectively. The microhardness gradually increased from the bottom to the top of the coating and increased with increasing of hBN content. The laser clad Ni60-10%hBN coating exhibits excellent tribological behavior at high temperatures (300 °C and 600 °C).

Original languageEnglish
Pages (from-to)87-94
Number of pages8
JournalOptics and Laser Technology
Volume78
DOIs
Publication statusPublished - 1 Apr 2016
Externally publishedYes

Keywords

  • Laser cladding
  • Microstructure
  • Self-lubrication
  • Wear

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