Pierre Fauchais
Laboratoire Sciences des Procedes Ceramiques et de Traitements de Surface UMR CNRS 6638 University of Limoges 123 avenue Albert Thomas, 87060 LIMOGES - France
J. F. Coudert
Laboratoire Sciences des Procédés Céramiques et Traitements de Surface, UMR-CNRS 6638, Université de Limoges, 87060 Limoges Cedex, France
Michel Vardelle
LMCTS-URA 320, University of Limoges, 123 Avenue Albert Thomas -87060 Limoges Cedex - France
Abstract
This paper summarizes what are the measuring techniques used in plasma spraying
to characterize
- plasma jets and their fluctuations: emission spectroscopy, laser scattering spectroscopy,
enthalpy probes coupled to mass spectroscopy and fast cameras,
- particles in flight in plasma jets: laser doppler anemometry, Phase Doppler Anemometry, fast two-color pyrometer, laser fluxmetry, hot particles light emission ...
- particles at impact: fast pyrometry and fast cameras,
- substrate and coating temperature: IR pyrometry and IR thermography.
The new set-ups to achieve an on-line control, on more precisely a monitoring of the spray process are also presented: DPV2000, Accuraspray, Plumespector, Spray watch, CCD cameras, SDC.