Removal of thin films from substrates by laser induced explosion

Details Removal of thin films from substrates by laser induced explosion Removal of thin films from substrates by laser induced explosion

1976-12-27

1978-03-28

Gwinnell, Harry J.

Electric heating

Metal heating

By arc

427 53, 427 96, 427271, 427272, 427444, B23K 2600, B05D 306

Patent

active

040816532

ABSTRACT:
Selected portions of a thin film coating of metal are removed from an insulative substrate by directing a coherent beam of light energy from a laser at the coating, to heat the coating and cause the evaporation and entrapment of the substrate material at the coating-substrate interface. A positive pressure builds up at the interface resulting in an explosion which removes the coating material.

REFERENCES:
patent: 3410979 (1968-11-01), Larsson
patent: 3596045 (1971-07-01), Steigerwald et al.
patent: 3655379 (1972-04-01), Gundlach
patent: 3665483 (1972-05-01), Becker et al.
patent: 3787210 (1974-01-01), Roberts
patent: 3969604 (1976-07-01), Baardsen

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