Properties of coatings created by HVOF technology using micro-and nano-sized powder

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The paper focuses on assessment the resistance of hot-sprayed coatings applied by HVOF technology (WC–Co–Cr created using powder of two different grain sizes) against erosive wear by dry-pot wear test in a pin mill at two sample angles. As these coatings are designated for the environment with varying elevated temperatures and often are in contact with the abrasive, the coatings have been subjected to thermal cyclic loading and their erosive resistance has been determined in as-sprayed condition and after the 5th and 10th thermal cycles. The corrosion resistance of coatings was evaluated by linear polarization (Tafel analysis).

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  • 1. Tan J.C. Looney L. Hashmi M.S.J. Component repair using HVOF thermal spraying Journal of Materials Processing Technology 1999 92-93 203-208.

  • 2. Oksa M. et al. Optimization and Characterization of High Velocity Oxy-fuel Sprayed Coatings: Techniques Materials and Applications Coatings 2011 1 17–52.

  • 3. Nahvi S.M. Jafari M. Microstructural and mechanical properties of advanced HVOF-sprayed WC-based cermet coatings Surface and Coatings Technology 2016 286 95–102.

  • 4. Zhou W. et al. High temperature wear performance of HVOF-sprayed Cr3C2–WC–NiCoCrMo and Cr3C2–NiCr hardmetal coatings Applied Surface Science 2017 416 33–44.

  • 5. Bolelli G. et al. Cermet coatings with Fe-based matrix as alternative to WC–CoCr: Mechanical and tribological behavi-ours Surface and Coatings Technology 2012 206 4079–4094.

  • 6. Brezinová J. et al. Study of selected properties of thermally sprayed coatings containing WC and WB hard particles Acta Mechanica et Automatica 2016 10 296–299.

  • 7. Berger L.M. et al. Microstructure and Properties of WC–10%Co–4%Cr Sprayed Powders and Coatings: Part. Powder Characterization Journal of Thermal Spray Technology 2001 10 311-325.

  • 8. Brezinová J. et al. Microstructure Wear Behavior and Corrosion Resistance of WC–FeCrAl and WC–WB–Co Coatings Metals 2018 8 399.

  • 9. Brezinová J. et al. Quality Evaluation of HVOF Coatings on the Basis of WC–Co in Tribocorrosive Conditions Materials Science Forum 2015 811 63–66.

  • 10. Thakur L. et al. An investigation on erosion behavior of HVOF sprayed WC–CoCr coatings Applied Surface Science 2011 258 1225–1234.

  • 11. Cui S.Y. et al. Slurry Erosion Behavior of F6NM Stainless Steel and High-Velocity Oxygen Fuel-Sprayed WC–10Co– 4Cr Coating Journal of Thermal Spray Technology 2017 26 473–482.

  • 12. Landová M. Brezinová J. Determination of selected properties and fracture toughness of HVOF coatings Koroze a Ochrana Materialu 2016 60 128–131.

  • 13. Ojala N. et al. Wear performance of quenched wear resistant steels in abrasive slurry erosion Wear 2016 354–355 21–31.

  • 14. Yang G.J. Gao P.H. Li C.X. et al. Simultaneous strengthening and toughening effects in WC–(nanoWC–Co) Scripta Materialia 2012 66 10 777-780.

  • 15. Mi P. Zhao H. Wang T. Ye F. Sliding wear behavior of HVOF sprayed WC–(nano-WC–Co) coating at elevated temperatures Materials Chemistry and Physics 2018 206 1-6.

  • 16. Mottaghi M. Ahmadian M. Comparison of the wear behavior of WC/(FeAl-B) and WC–Co composites at high temperatures International Journal of Refractory Metals and Hard Materials 2017 67 105–114.

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Impact Factor

CiteScore 2018: 0.25

SCImago Journal Rank (SJR) 2018: 0.164
Source Normalized Impact per Paper (SNIP) 2018: 0.286

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