Coating apparatus – With means to apply electrical and/or radiant energy to work... – Radiant heating
Patent
1996-08-08
1998-09-29
Engel, James
Coating apparatus
With means to apply electrical and/or radiant energy to work...
Radiant heating
118309, 118621, 222399, B05B 500, B65D 8306
Patent
active
058141529
ABSTRACT:
A method and apparatus for coating the surface of a substrate suspends a coating material above the surface of the substrate and irradiates both the coating material and the underlying surface of the substrate. By irradiating both the coating material and the underlying surface of the substrate, a first portion of the coating material is melted to form an at least partially molten droplet of coating material. In addition, at least a second portion of the coating material is ablated to thereby create an ablation plume which propels the at least partially molten droplet of coating material toward the substrate. Thus, a metallic powder can be suspended within a carrier and can be directed along the substrate so as to be irradiated by a pulse of laser energy. The ablation of the coating material also forms at least a second portion of the coating material into a plasma which is deposited within and at least partially fills the depressions or voids within the coating of the substrate following the adherence of the at least partially molten droplet of coating material to the surface of the substrate.
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Engel James
McDonnell Douglas Corporation
Padgett Calvin
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