Enhancing wear performance by depositing alumina/GNPs coating on textured WC-TiC-Co substrates

  • Changxia Liu*
  • , Junlong Sun
  • , Federico Venturi
  • , Acacio Rincon Romero
  • , Tanvir Hussain*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Grid and line textures were made on the top surfaces of WC-TiC-Co cemented carbide substrates. Suspension High Velocity Oxy-Fuel (SHVOF) was utilized to deposit alumina and graphene nanoplatelets (GNPs) coating on the textured surfaces. The friction and wear behaviors of the Alumina/GNPs coating were evaluated using dry sliding wear tests against alumina balls. The friction reduction mechanism of alumina/GNPs coating was presented. GNPs in the alumina coatings played a significant role in reducing the coefficient of friction (CoF) up to 40 % and improving the wear resistance properties of the coating. A stress distribution model of the friction contact zone was provided to analyze the tribological performance of the textured sample. The friction reduction mechanism for alumina/GNPs coating was discussed. These results offer a benchmark for further studies combining microtextured surfaces and SHVOF thermal sprayed coatings as promising candidates for high wear resistant applications.

Original languageEnglish
Article number128817
JournalSurface and Coatings Technology
Volume447
DOIs
Publication statusPublished - 15 Oct 2022
Externally publishedYes

Keywords

  • Cemented carbide composites
  • Graphene nanoplatelets
  • Microtexture
  • SHVOF
  • Wear resistant

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