Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1978-07-07
1980-09-09
Weisstuch, Aaron
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
118726, 118 501, 118620, 204298, 427 39, 427 451, 427 50, C23C 1500, C23C 1312
Patent
active
RE0304018
ABSTRACT:
A gasless ion plating process wherein plating material is melted, vaporized, and then subjected to an ionization environment in a low pressure chamber with a "virtual cathode" consisting of a plasma of ionized atoms of evaporant material created by evaporating in an RF field. It is a gasless ion plating process wherein the system ambient pressure prior to plating material evaporation may be much lower than that required to sustain a glow discharge, however, with vapor pressure of evaporant material added to the environment base pressure being such as to result in a plasma of ionized atoms of the plating material developing as the vaporized material approaches the RF cathode.
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Buckman Thomas W.
Illinois Tool Works Inc.
Weisstuch Aaron
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