Nano-sized and sub-micron carbide powders for thermal spraying

Ulla Kanerva, J. Oksanen, Tomi Suhonen, Tommi Varis, X.W. Liu, Y. Ge, Tapio Ritvonen, O. Söderberg, Erja Turunen, S-P. Hannula

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

HVOF sprayed WC-Co(Cr) coatings are typically used to prevent wear and corrosion. In order to improve coating properties and economical efficiency of coatings, process development of feedstock powders and spraying processes are required. Denser coatings with reduced as-sprayed surface roughness were obtained by reduction of carbide and agglomerate sizes. According to early studies, using the conventional HVOF process damages the desired nano-structure during spraying. Therefore, in this study a new thermal spray system called CJS (Carbide Jet Spray) was utilised. CJS has colder process parameters, so the structure of fine particles and their properties are more easily preserved. Commercial and experimental powders with different carbide and particle sizes were sprayed with CJS and the resulting coatings were analysed.
Original languageEnglish
Title of host publicationProceedings of the World Powder Metallurgy Congress and Exhibition
Subtitle of host publicationPowder manufacturing and processing, miniaturization and nanotechnology, powder pressing
Place of PublicationShrewsbury
PublisherEuropean Power Metallurgy Association EPMA
Pages255-262
Volume1
ISBN (Print)978-1-899072-10-1
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication
EventWorld Powder Metallurgy Congress & Exhibition, PM2010 - Florence, Italy
Duration: 10 Oct 201014 Oct 2010

Conference

ConferenceWorld Powder Metallurgy Congress & Exhibition, PM2010
Abbreviated titlePM2010
CountryItaly
CityFlorence
Period10/10/1014/10/10

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Keywords

  • spray drying
  • CJS-spraying
  • nanocarbide
  • ProperPart
  • ProperTune

Cite this

Kanerva, U., Oksanen, J., Suhonen, T., Varis, T., Liu, X. W., Ge, Y., Ritvonen, T., Söderberg, O., Turunen, E., & Hannula, S-P. (2010). Nano-sized and sub-micron carbide powders for thermal spraying. In Proceedings of the World Powder Metallurgy Congress and Exhibition: Powder manufacturing and processing, miniaturization and nanotechnology, powder pressing (Vol. 1, pp. 255-262). European Power Metallurgy Association EPMA.