Cavitation and Sand Slurry Erosion Resistances of WC-10Co-4Cr Coatings

Qun Wang*, Zhaoxi Tang, Limei Cha

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Two WC-10Co-4Cr coatings were deposited by high-velocity oxygen fuel (HVOF) and high-velocity air fuel (HVAF) spray processes, respectively, and their basic mechanical properties, cavitation and sand slurry erosion resistances were investigated. The results show that the HVAF-sprayed WC-10Co-4Cr coating exhibited a lower degree of decarburization and better properties in terms of hardness, fracture toughness, porosity, cavitation and sand slurry erosion resistances than those of the HVOF-sprayed WC-10Co-4Cr coatings, respectively. Therefore, HVAF-sprayed WC-10Co-4Cr coatings may be better employed for the protection of hydro-turbine component surfaces against cavitation and sand slurry erosion.

Original languageEnglish
Pages (from-to)2435-2443
Number of pages9
JournalJournal of Materials Engineering and Performance
Volume24
Issue number6
DOIs
StatePublished - 26 Jun 2015
Externally publishedYes

Keywords

  • cavitation
  • HVAF
  • HVOF
  • sand slurry erosion
  • WC-10Co-4Cr

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