Low emissivity coatings on transparent substrates

Details Low emissivity coatings on transparent substrates Low emissivity coatings on transparent substrates

1983-09-19

1984-07-31

Demers, Arthur P.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204192R, 204192P, 428621, C23C 1500

Patent

active

044628838

ABSTRACT:
A low emissivity coating on a transparent substrate of glass or plastics material is produced by cathode sputtering a layer of silver and thereafter reactively sputtering an anti-reflection metal oxide layer over the silver in the presence of oxygen or an oxidizing gas, wherein a small amount of an additional metal other than silver is sputtered onto the silver before the overlying anti-reflection metal oxide layer is applied.
The process produces a new low emissivity coated product comprising a glass or plastics substrate with a low emissivity coating comprising a silver layer, a small amount of additional metal dispersed non-uniformly in the silver layer and possibly extending over the silver layer, and an overlying anti-reflection metal oxide coating.

REFERENCES:
patent: 3979271 (1976-09-01), Moreika et al.
patent: 4180448 (1979-12-01), Sashiki et al.
patent: 4322276 (1982-03-01), Meckel et al.
patent: 4337990 (1982-07-01), Fan et al.
patent: 4379040 (1983-04-01), Gillery

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