Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-17T18:18:39.985Z Has data issue: false hasContentIssue false
  • English
  • Français

Heat Treatment of Zirconia Powders with Different Morphologies Under Thermal Plasma Conditions

Published online by Cambridge University Press:  21 February 2011

M. Vardelle ,
A. Vardelle ,
A. Denoirjean  and
P. Fauchais
M. Vardelle
Affiliation:
Laboratoire “Céramiques Nouvelles” URA CNRS 320 123, rue Albert Thomas, 87060 Limoges, France
A. Vardelle
Affiliation:
Laboratoire “Céramiques Nouvelles” URA CNRS 320 123, rue Albert Thomas, 87060 Limoges, France
A. Denoirjean
Affiliation:
Laboratoire “Céramiques Nouvelles” URA CNRS 320 123, rue Albert Thomas, 87060 Limoges, France
P. Fauchais
Affiliation:
Laboratoire “Céramiques Nouvelles” URA CNRS 320 123, rue Albert Thomas, 87060 Limoges, France
Get access

Abstract

Plasma sprayed ceramic coatings are mainly used for the protection of metal components in diesel engines, gas turbines and aeroengines. Increasing demands for better thermomechanical properties at higher temperatures require well defined and reproducible spraying conditions. The way the powder is manufactured plays an important role in the quality of the coatings. This paper presents a study carried out on three grades of zirconia powders manufactured by different processes. The heat treatment of the powders has been monitored within the plasma jet by in flight pyrometry and laser velocimetry. The particulates melting is controlled by observation of individual particulates splats collected on glass slides. A mathematical model of plasma particulates heat transfer allows to explain the obtained results.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 190: Symposium M – Plasma Processing and Synthesis of Materials III , 1990 , 175
Copyright
Copyright © Materials Research Society 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Bennet, A., Brit. Cerm. Proc., 3a, 207 (1984)Google Scholar
2. Kvernes, I., Lugsheider, E., Fairbanks, J., Proc. MRS Europe, (pub.) Ed. de Physique, Paris, Nov. 13, (1985)Google Scholar
3. Desplanches, G., First Plasma Technik Symposium, 1, 193, (1988) (pub.) Plasma Technik, Wohlen, CHGoogle Scholar
4. Fauchais, P., Vardelle, M., Vardelle, A., Coudert, J.F., Metal. Trans. B., 20b, 263, (1989)Google Scholar
5. Gitzhoffer, F., Lombard, D., Vardelle, A., Vardelle, M., MARTIN, C., FAUCHAIS, P., Advances in Thermal Spraying (pub.) Perganon Press, p269, (1986)Google Scholar
6. Gitzhoffer, F., Bernard, D., Fauchais, P., Martin, C., Nat. Thermal Spray Conf. (pub) ASM INT. (1989)Google Scholar
7. Roumilhac, Ph., University Thesis, University of Limoges, March (1990)Google Scholar
8. Fauchais, P., Coudert, J.F., Vardelle, M., In Plasma Diagnostics, (Eds.) Flamm and Omenetto(Academic Press), pp349–446, (1989)Google Scholar
9. Vardelle, M., Doctorat es Sciences Thesis, Limoges University, France, (1987)Google Scholar
10. Cabannes, F., Rev. Gen. Ther. Fr., March, 219 (1980)Google Scholar
11. Bernard, D., University Thesis, University of Limoges, France, June (1990)Google Scholar