Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of coating supply or source outside of primary...
Patent
1992-06-26
1994-05-03
Beck, Shrive
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of coating supply or source outside of primary...
427569, 427231, 427237, 4272481, 428 369, 215 122, B05D 722, B05D 314, C23C 1602
Patent
active
053086490
ABSTRACT:
In a method of treating a hollow article, a first gas substantially fills the inside of the article. A second gas including electrically charged species is provided on the outside of the article. The two gases are maintained separate from one another. The first gas is maintained is an electrically conductive state as, for example, in an ionized state. An electrical potential is applied to a first electrode in contact with the first gas. Because the first gas is conductive, this first potential is applied at the interior surfaces of the article and, therefore, influences the electrically charged species in the second gas on the outside of the article. The electrically charged species in the second gas interact with the exterior surfaces of the article under the influence of the electrical potential applied through the first gas. The second gas may be a plasma and a reactant may be introduced into the second gas so that reaction products are formed and deposited on the exterior surface of the article.
REFERENCES:
patent: 4478874 (1984-10-01), Hahn
patent: 4735832 (1988-04-01), Ichikawa et al.
patent: 4746538 (1988-05-01), Mackowski
patent: 4880675 (1989-11-01), Mehta
patent: 4894256 (1990-01-01), Gartner et al.
Beck Shrive
Chen Bret
Polar Materials Inc.
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