Low emissivity coatings on transparent substrates

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

C - Chemistry, Metallurgy

23

C

204/96.06

C23C 14/34 (2006.01) C03C 17/36 (2006.01) C23C 14/08 (2006.01) C23C 14/18 (2006.01) C23C 14/20 (2006.01) G02B 1/11 (2006.01) G02B 5/28 (2006.01)

Patent

CA 1203197

ABSTRACT A low emissivity coating on a transparent substrate of glass or plastics materila is produced by cathode sputtering an anti-reflection metal oxide layer over the silver in the presence of oxygen or an oxidising 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.

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