Laser cleaning of metal stock

Details Laser cleaning of metal stock Laser cleaning of metal stock

1988-05-10

1990-02-06

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 321, 204 33, 204 34, 20415715, 20415741, 427 531, 134 1, C25D 534, B05D 306

Patent

active

048986500

ABSTRACT:
A method of cleaning a metal surface by means of a laser to improve the surface characteristics, prior to plating thereover with a noble metal, such as gold. More particularly, the method hereof includes the steps of illuminating the desired areas of said metal surface with a laser beam; provided, however, the laser power density is controlled to vaporize surface contaminants and embedded foreign materials, without significantly altering the properties of the metal, in preparation for plating said cleaned areas with said noble metal.

REFERENCES:
patent: 4028135 (1977-06-01), Vig
patent: 4063063 (1977-12-01), Funck
patent: 4340617 (1982-07-01), Deutsch
patent: 4348263 (1982-09-01), Draper et al.
patent: 4349583 (1982-09-01), Kulyrych
patent: 4368080 (1983-01-01), Langen
patent: 4490211 (1984-12-01), Chen et al.
patent: 4495255 (1985-01-01), Draper
patent: 4659587 (1987-04-01), Imura
patent: 4832798 (1989-05-01), Cvijanovich

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