An analytical and experimental study of plasma spraying of alumina: Final program and abstracts
As part of an investigation of the the dynamics that occur in the plume of a typical thermal spray torch, an analytical and experimental study of the plasma spraying of alumina is being performed; preliminary results are reported here. Numerical models of the physical processes in the torch column and plume were used to determine the temperature and flow fields. Computer simulations of particle injection (15, 34, and 53 ..mu..m alumina particles) are also presented. The alumina experiments were conducted at a 35 kW power level using a 100 scfh argon and 15 scfh hydrogen gas mixture for two alumina powders. The quality of the coatings is discussed with respect to porosity, sample metallography, and microhardness. 6 refs., 5 figs., 1 tab.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6507108
- Report Number(s):
- EGG-M-36887; CONF-8805260-1; ON: DE89005199
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DEPOSITION
DIFFRACTION
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PLASMA ARC SPRAYING
PLASMA GUNS
PLUMES
SCATTERING
SIZE
SPRAY COATING
SURFACE COATING
VELOCITY
X-RAY DIFFRACTION