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

• Main Authors: Andrei Surzhenkov, Dmitry Goljandin, Rainer Traksmaa, Mart Viljus, Kristofer Talviste, Aare Aruniit, Jyrki Latokartano, Priit Kulu
• Format: Article
• Language: English
• Published: Kaunas University of Technology 2015-09-01
• Series: Medžiagotyra
• Subjects: self-fluxing alloy; cermet; composite coating; high temperature wear; erosion wear
• Online Access: http://matsc.ktu.lt/index.php/MatSc/article/view/7617
• ISSN: 1392-1320; 2029-7289

<p>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.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.21.3.7617">http://dx.doi.org/10.5755/j01.ms.21.3.7617</a></p>