Behavior of HVOF WC-10Co4Cr Coatings with Different Carbide Size in Fine and Coarse Particle Abrasion

Arash Ghabchi, Tommi Varis, Erja Turunen, Tomi Suhonen, Xuwen Liu, Simo-Pekka Hannula

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)


A modified ASTM G 65 rubber wheel test was used in wet and dry conditions using 220 nm titania particles and 368 μm sand particles, respectively. Both tests were conducted on WC-CoCr coatings produced with two powders varying in carbide grain size; conventional and sub-micron, to address the effect of carbide size, as well as abrasive medium characteristics on the wear performance. The same spot with low and high magnification before and after abrasion wear test was analysed in detail using SEM to visualize wear mechanism. It was shown that the mechanism of the wear depends on the relative size of the carbide and abrasive particle. Quantitative analysis of wear also was done on the samples. By tailoring the carbide size the wear performance can be improved. Some of the mechanical properties of coatings were evaluated for comparison purposes.
Original languageEnglish
Title of host publicationProceedings of the International Thermal Spray Conference
PublisherASM International
ISBN (Print)978-161503004-0
Publication statusPublished - 2009
MoE publication typeA4 Article in a conference publication
EventInternational Thermal Spray Conference - Las Vegas, United States
Duration: 4 May 20097 May 2009


ConferenceInternational Thermal Spray Conference
CountryUnited States
CityLas Vegas


  • HVOF
  • rubber wheel abrasion test
  • WC-CoCr
  • wear mechanism
  • functional surfaces
  • tribology
  • ProperTune

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