Medžiagotyra (Sep 2015)

HIGH TEMPERATURE EROSION WEAR OF CERMET PARTICLES REINFORCED SELF-FLUXING ALLOY MATRIX HVOF SPRAYED COATINGS

  • Andrei Surzhenkov,
  • Dmitry Goljandin,
  • Rainer Traksmaa,
  • Mart Viljus,
  • Kristofer Talviste,
  • Aare Aruniit,
  • Jyrki Latokartano,
  • Priit Kulu

DOI
https://doi.org/10.5755/j01.ms.21.3.7617
Journal volume & issue
Vol. 21, no. 3
pp. 386 – 390

Abstract

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In the present paper, the resistance of high velocity oxy-fuel (HVOF) sprayed TiC-NiMo and Cr3C2-Ni cermet particles reinforced NiCrSiB self-fluxing alloy matrix coatings to high temperature erosion wear is studied. Microstructure of the coatings was examined by SEM, phase composition was determined by XRD. A four-channel centrifugal particle accelerator was applied to study the high temperature erosion wear of the coatings. The impact angles were 30 and 90 degrees, initial particle velocity was 50 m/s, temperature of the test - 650 degrees. Volume wear of the coatings was calculated and compared to the respective values of the reference materials. Wear mechanisms were studied by SEM.DOI: http://dx.doi.org/10.5755/j01.ms.21.3.7617

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