| abstract |
A liquid precursor is completely infiltrated into a plasma gas flow of a plasma torch in a thermal spraying process. A plasma spray device (1) includes a plasma torch (4) for heating a plasma gas (5) within a heating zone (6), the plasma torch (4) generating a plasma gas stream (8). 7 and an aperture 9 extending through the nozzle body 7 along a central longitudinal axis 10. The aperture 9 has a converging section 11 having an inlet 12 for the plasma gas 5, a throat section 13 containing the smallest cross-sectional area of the aperture, and a diverging section 14 having an outlet 15 for the plasma gas flow 8. , An inlet tube 16 is provided for introducing a liquid precursor 17 into the plasma gas stream 8. According to the invention, infiltration means 18, 182 are provided for infiltrating the liquid precursor 17 into the plasma gas stream 8. [Selection] Figure 1 |