Induction plasma spraying of ceramics
Abstract
A study is carried out on the influence of in-flight particle parameters on their splatting properties during the induction plasma deposition of ceramics. Results are presented for alumina powders with mean particle diameters of 21 microns and 82 microns under soft vacuum conditions. The chamber pressure was varied between 46.6 and 66.6 kPa. Measurements are carried out on the particle surface temperature and velocity prior to impact on stainless steel substrates. The form of the splat obtained is evaluated using SEM. The results are used for the parametric optimization of the induction plasma spraying process. Thick alumina coatings with total porosities as low as 2 percent were obtained.
- Publication:
-
24th International SAMPE Technical Conference
- Pub Date:
- 1992
- Bibcode:
- 1992sampe..24...56F
- Keywords:
-
- Aluminum Oxides;
- Ceramic Coatings;
- Plasma Spraying;
- Plasma Torches;
- Vacuum Deposition;
- Hardness Tests;
- Morphology;
- Surface Temperature;
- Mechanical Engineering