| 摘要 |
PURPOSE:To form a thermally sprayed composite film in which a material to be thermally sprayed is isolated from the corrosive by a dense vapor- deposited film and the thermally sprayed film is not released and with the wear resistance and heat insulating property sufficiently enhanced by a thermally sprayed film on the vapor-deposited film. CONSTITUTION:DC arc plasma 17 is produced by a DC arc plasma torch 1, and high-frequency induced plasma 18 is produced in an insulating cylinder 10 arranged before the torch 1. The grains 19 of a powder supplied into the DC arc plasma 17 are thermally sprayed on a material 16 through the high-frequency induced plasma 18, the output of the plasma 18 is controlled, and a thermally sprayed composite film consisting of the vapor-deposited film and the thermally sprayed film thereon is formed on the material 16. |
