Coating processes – Direct application of electrical – magnetic – wave – or... – Electromagnetic or particulate radiation utilized
Patent
1993-10-14
1994-12-13
Pianalto, Bernard
Coating processes
Direct application of electrical, magnetic, wave, or...
Electromagnetic or particulate radiation utilized
118716, 118718, 118719, 427237, 427238, 427249, 4272555, 427294, 427586, B05D 722
Patent
active
053728629
ABSTRACT:
A coating technique for beam tubes which employs a laser to ablate a target material and produce a plasma plume containing ions of the target material which adhere to the inner wall surface of the tube forming a thin film. The device employed in the coating process includes a pulse laser, a turning mirror used to direct the laser radiation, a window attached to tubing whose function is to evacuate the setup and to support a rail on which a carriage carrying the target material and optical elements for focusing the laser light onto the targets are mounted. During the coating process, the beam tube and the rail support tubes are evacuated to a lower pressure to remove ambient air. The apparatus is then filled with an inert gas. The laser is pulsed for a predetermined duration to ablate the target material for coating the vicinal surfaces of the beam tube. The carriage is then translated to a new position and the process is repeated until the carriage has travelled the entire beam tube and the inner surface wall is coated.
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