Study of Selected Properties of Thermally Sprayed Coatings Containing WC and WB Hard Particles

Janette Brezinová 1 , Anna Guzanová 1 , Dagmar Draganovská 1 , Pavlo O. Maruschak 2  and Mariana Landová 1
  • 1 Faculty of Mechanical Engineering, Department of Mechanical Technology and Materials, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
  • 2 Faculty of Computer Technologies, Department of Automation of Technological Processes and Productions, Ternopil Ivan Pul'uj National Technical University, Ruska str., 56, Ternopil, Ukraine


The paper presents results of research of the essential characteristics of two kinds of advanced coatings applied by HVOF technology. One studied coating: WB-WC-Co (60-30-10%) contains two types of hard particles (WC and WB), the second coating is eco-friendly alternative to the previously used WC-based coatings, called “green carbides” with the composition WC-FeCrAl (85-15%). In green carbides coating the heavy metals (Co, Ni, NiCr) forming the binding matrix in conventional wear-resistant coatings are replaced by more environmentally friendly matrix based on FeCrAl alloy. On the coatings was carried out: metallographic analysis, measurement of thickness, micro-hardness, adhesion, resistance to thermal cyclic loading and adhesive wear resistance (pin-on-disk test). One thermal cycle consisted of heating the coatings to 600°C, dwell for 10 minutes, and subsequently cooling on the still air. The number of thermal cycles: 10. The base material was stainless steel AISI 316L, pretreatment prior to application of the coating: blasting with white corundum, application device JP-5000.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • 1. Aw P.K., Tan B.H. (2006), Study of microstructure, phase and microhardness distribution of HVOF sprayed multi-modal structured and conventional WC–17Co coatings, Journal of Materials Processing Technology, 174(1-3), 305–311.

  • 2. Berget J., Rogne T., Bardal E. (2007), Erosion–corrosion properties of different WC–Co–Cr coatings deposited by the HVOF process—influence of metallic matrix composition and spray powder size distribution, Surface and Coatings Technology, 201(18), 7619–7625.

  • 3. Bolelli G., Börner T., Bozza F., Cannillo V., Cirillo G., Lusvarghi L. (2012), Cermet coatings with Fe-based matrix as alternative to WC–CoCr: Mechanical and tribological behaviours, Surface and Coatings Technology, 206(19-20), 4079–4094.

  • 4. Brezinová J., Guzanová A. (2012), Possibilities of utilization high velocity oxygen fuel (HVOF) coatings in conditions of thermal cyclic loading, Metalurgija, 51(2), 211-215.

  • 5. Brezinová J., Guzanová A., Draganovská D. (2015a), Abrasive blast cleaning and its application, 1st. Ed., Pfaffikon: Trans Tech Publications.

  • 6. Brezinová J., Guzanová A., Draganovská D., Bronček J. (2015b), Quality evaluation of HVOF coatings on the basis of WC-Co in tribocorrosive conditions, Materials Science Forum, 811, 63-66.

  • 7. Brezinová J., Guzanová A., Draganovská D., Egri M. (2013), Assessment tribological properties of coatings applied by HVOF technology, Acta Mechanica et Automatica, 7(3), 135-139.

  • 8. Brezinová J., Guzanová A., Egri M. (2012), Change in properties of HVOF coatings under conditions of thermal cyclic loading, Chemické listy, 106(S3), 383-386.

  • 9. Brezinová J., Guzanová A., Egri M., Malejčík J. (2011), Evaluation of thermal sprayed coatings properties in terms of erosive wear, Chemické listy: special issue, 105(17), 775-776.

  • 10. Hong S., Wu Y., Wang Q., Ying G., Li G., Gao W., Wang B., Guo W. (2013a), Microstructure and cavitation–silt erosion behavior of high-velocity oxygen–fuel (HVOF) sprayed Cr3C2–NiCr coating, Surface and Coatings Technology, 225, 85–91.

  • 11. Hong S., Wu Y., Zheng Y., Wang B., Gao W., Lin J. (2013b), Microstructure and electrochemical properties of nanostructured WC–10Co–4Cr coating prepared by HVOF spraying, Surface and Coatings Technology, 235, 582–588.

  • 12. Hulka I., Uţu D., Şerban V.A. (2011), Micro-scale sliding wear behavior of HVOF sprayed WC-Co(Cr), Annals of Faculty Engineering Hunedoara – International Journal of Engineering, 9(2), 61-64.

  • 13. Kaur M., Singh H., Prakash S. (2009), High-Temperature Corrosion Studies of HVOF-Sprayed Cr3C2-NiCr Coating on SAE-347H boiler steel, Journal of Thermal Spray Technology, 18(4), 619-632.

  • 14. Maiti A.K., Mukhopadhyay N., Raman R. (2007), Effect of adding WC powder to the feedstock of WC–Co–Cr based HVOF coating and its impact on erosion and abrasion resistance, Surface and Coatings Technology, 201(18), 7781–7788.

  • 15. Saha G.C., Khan T.I., Zhang G.A. (2011), Erosion–corrosion resistance of microcrystalline and near-nanocrystalline WC–17Co high velocity oxy-fuel thermal spray coatings, Corrosion Science, 53(6), 2106–2114.

  • 16. Sahraoui T., Guessasma S., Jeridane M. A., Hadji M. (2010), HVOF sprayed WC–Co coatings: Microstructure, mechanical properties and friction moment prediction, Materials and Design, 31(3), 1431 – 1437.

  • 17. Santana Y.Y., La Barbera-Sosa J.G., Caro J., Puchi-Cabrera E.S., Staia M.H. (2008), Mechanical properties and microstructure of WC–10Co–4Cr and WC–12Co thermal spray coatings deposited by HVOF, Surface Engineering, 24(5), 374-382.

  • 18. Staia M.H., Ramos E., Carrasquero A., Roman A., Lesage J., Chicot D., Mesmacque G. (2000), Effect of substrate roughness induced by gritblasting upon adhesion of WC-17%Co thermal sprayed coatings, Thin Solid Films, 377-378, 657-664.

  • 19. Wood R.J.K. (2010), Tribology of thermal sprayed WC–Co coatings, International Journal of Refractory Metals and Hard Materials, 28(1), 82–94.

  • 20. Zavareh M.A., Sarhan A.A.D.M., Razak B.B.A., Basirun W.J. (2015), The tribological and electrochemical behavior of HVOF-sprayed Cr3C2–NiCr ceramic coating on carbon steel, Ceramics International, 41(4), 5387–5396.

  • 21. Žórawski W. (2013), The microstructure and tribological properties of liquid-fuel HVOF sprayed nanostructured WC–12Co coatings, Surface and Coatings Technology, 220, 276-281.


Journal + Issues