Skip to main content
SpringerLink
Log in

Comparison of the Mechanical and Electrochemical Properties of WC-25Co Coatings Obtained by High Velocity Oxy-Fuel and Cold Gas Spraying

  • Peer Reviewed
  • Published:
Journal of Thermal Spray Technology Aims and scope Submit manuscript

Abstract

Cold gas spray (CGS) coatings were previously produced by spraying WC-25Co cermet powders onto Al7075-T6 and low-carbon steel substrates. Unlike conventional flame spray techniques (e.g., high-velocity oxy-fuel; HVOF), no melting of the powder occurs; the particles are deformed and bond together after being sprayed by a supersonic jet of compressed gas, thereby building up several layers and forming a coating. WC-Co cermets are used in wear-resistant parts, because of their combination of mechanical, physical, and chemical properties. XRD tests were previously run on the initial powder and the coatings to determine possible phase changes during spraying. The bonding strength of the coatings was measured by adhesion tests. Here, WC-25Co coatings were also deposited on the same substrates by HVOF spraying. The wear resistance and fracture toughness of the coatings obtained previously by CGS and the HVOF coatings obtained here were studied. Their corrosion resistance was determined by electrochemical measurements. It was possible to achieve thick, dense, and hard CGS coatings on Al7075-T6 and low-carbon steel substrates, with better or the same mechanical and electrochemical properties as those of the HVOF coatings; making the former a highly competitive method for producing WC-25Co coatings.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

  1. V.V. Sobolev, J.M. Guilemany, and J. Nutting, High Velocity Oxy-Fuel Spraying, Maney, London, 2004

    Google Scholar 

  2. J.M. Guilemany, S. Dosta, and J.R. Miguel, The Enhancement of the Properties of WC-Co HVOF Coatings Through the Use of Nanostructured and Microstructured Feedstock Powders, Surf. Coat. Technol., 2006, 201, p 1180-1190

    Article  Google Scholar 

  3. J.M. Guilemany, S. Dosta, J. Nin, and J.R. Miguel, Study of the Properties of WC-Co Nanostructured Coatings Sprayed by High-Velocity Oxyfuel, J. Therm. Spray Technol., 2005, 14(3), p 405-413

    Article  Google Scholar 

  4. S. Dosta, M. Couto, and J.M. Guilemany, Cold Spray Deposition of a WC-25Co Cermet Onto Al7075-T6 and Carbon Steel Substrates, Acta Mater., 2013, 61(2), p 643-652

    Article  Google Scholar 

  5. M. Couto, S. Dosta, M. Torrell, J. Fernández, and J.M. Guilemany, Cold Spray Deposition of WC-17 and 12Co cermets onto aluminum, Surf. Coat. Technol., 2013, 235, p 54-61

    Article  Google Scholar 

  6. V.K. Champagne, The Cold Spray Materials Deposition Process: Fundamentals and Applications, CRC Press, Boca Raton, 2007

    Book  Google Scholar 

  7. J. Kawakita, H. Katanoda, M. Watanabe, K. Yokoyama, and S. Kuroda, Warm Spraying: An Improved Spray Process to Deposit Novel Coatings, Surf. Coat. Technol., 2008, 202, p 4369-4373

    Article  Google Scholar 

  8. M.M. Lima, C. Godoy, P.J. Modesi, J.C. Avelar-Batista, A. Davison, and A. Matthews, Coating Fracture Toughness Determined by Vickers Indentation: An Important Parameter in Cavitation Erosion Resistance of WC-Co Thermally Sprayed Coatings, Surf. Coat. Technol., 2004, 177-178, p 489-496

    Article  Google Scholar 

  9. M.M. Lima, C. Godoy, J.C. Avelar-Batista, and P.J. Modesi, Toughness Evaluation of HVOF WC-Co Coatings Using Non-linear Regression Analysis, Mater. Sci. Eng., 2003, A357, p 337-345

    Article  Google Scholar 

  10. E. López Cantera and B.G. Mellor, Fracture Toughness and Crack Morphologies in Eroded WC-Co-Cr Thermally Sprayed Coatings, Mater. Lett., 1998, 37, p 201-210

    Article  Google Scholar 

  11. N. Cinca, M. Barbosa, S. Dosta, and J.M. Guilemany, Study of Ti Deposition Onto Al Alloy by Cold Gas Spraying, Surf. Coat. Technol., 2010, 205, p 1096-1102

    Article  Google Scholar 

  12. C. Verdon, A. Karimi, J.L. Martin, and L. Pawlowski, A Study of High Velocity Oxy-fuel Thermally Sprayed Tungsten Carbide Based Coatings. Part I: Microstructures, Mater. Sci. Eng., 1998, A246, p 11-24

    Article  Google Scholar 

  13. D.A. Stewart, P.H. Shipway, and D.G. McCartney, Abrasive Wear Behavior of Conventional and Nanocomposite HVOF-Sprayed WC-Co Coatings, Wear, 1999, 225-229, p 98-789

    Article  Google Scholar 

  14. T. Schmidt, F. Gärtner, H. Assadi, and H. Kreye, Development of a Generalized Parameter Window for Cold Spray. Deposition, Acta Mater., 2006, 54, p 729-742

    Article  Google Scholar 

  15. H. Assadi, F. Gärtner, T. Stoltenhoff, and H. Kreye, Bonding Mechanism in Cold Gas Spraying, Acta Mater., 2003, 51, p 4379-4394

    Article  Google Scholar 

  16. R.G. Kelly, J.R. Scully, D.W. Shoesmith, and R.G. Buchheit, Electrochemical Techniques in Corrosion Science and Engineering, Chapter 7, Marcel Dekker Inc, New York, 2002

    Book  Google Scholar 

Download references

Acknowledgments

The authors wish to thank the University of Barcelona for financial support for this research and the Generalitat de Catalunya for funding project 2009 SGR-00390. Our thanks also go to Fujimi Inc. for providing the WC-Co powder.

Author information

Authors and Affiliations

  1. Thermal Spray Centre (CPT), Facultad de Química, Universitat de Barcelona, Barcelona, Spain

    M. Couto, S. Dosta, J. Fernández & J. M. Guilemany

Authors
  1. M. Couto
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. S. Dosta
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. J. Fernández
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. J. M. Guilemany
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to S. Dosta.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Couto, M., Dosta, S., Fernández, J. et al. Comparison of the Mechanical and Electrochemical Properties of WC-25Co Coatings Obtained by High Velocity Oxy-Fuel and Cold Gas Spraying. J Therm Spray Tech 23, 1251–1258 (2014). https://doi.org/10.1007/s11666-014-0123-0

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11666-014-0123-0

Keywords

Search

Navigation