Abstract
Replacement of electrolytic hard chromium method by thermal spray technology has shown a growing interest in the past decades, mainly pioneered by depositing WC-based material by conventional HVOF processes. Lower thermal energy and higher kinetic energy of sprayed particles achieved by newly developed Supersonic Air Fuel system, so-called HVAF-M3, significantly reduces decarburization, and increases wear and corrosion resistance properties, making HVAF-sprayed coatings attractive both economically and environmentally. In the present work, full factorial designs of experiments have been extensively utilized to establish relationships between hardware configurations, process and engineering variables, and coatings properties. The relevance of those process factors is emphasized and their significance is discussed in the optimization of coatings for improved abrasion wear and corrosion performances.
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Acknowledgments
The authors would like to express their gratitude to Sulzer Metco for providing the powder feedstock material and carrying out the ASTM G65 abrasion wear test. Stefan Björklund is gratefully acknowledged for his help in processing, engineering, and developing our HVAF thermal spray resources at University West and Production Technology Centre in Trollhättan, Sweden.
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Lyphout, C., Björklund, S., Karlsson, M. et al. Screening Design of Supersonic Air Fuel Processing for Hard Metal Coatings. J Therm Spray Tech 23, 1323–1332 (2014). https://doi.org/10.1007/s11666-014-0139-5
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DOI: https://doi.org/10.1007/s11666-014-0139-5