Concentration-modulated coatings

C - Chemistry – Metallurgy – 03 – C

Patent

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Details

C03C 17/36 (2006.01) C23C 14/00 (2006.01) C23C 14/56 (2006.01)

Patent

CA 2530443

The invention provides a substrate bearing a low-emissivity coating. The low- emissivity coating comprises at least one graded film region. In certain embodiments, at least one graded film region is provided between the two infrared-reflective layers of a double-type low-emissivity coating. The graded film region has a substantially continuously decreasing concentration of a first dielectric material and a substantially continuously increasing concentration of a second dielectric material. Also provided are methods of depositing such low emissivity coatings and substrates bearing these coatings.

L'invention concerne un substrat présentant un revêtement à faible émissivité. Ledit revêtement à faible émissivité comprend au moins une région de film gradué. Dans certains modes de réalisation, au moins une région de film gradué est pourvue entre les deux couches réfléchissant la lumière infrarouge d'un revêtement à faible émissivité de type double. Cette région de film gradué possède une concentration d'un premier matériau diélectrique diminuant de façon sensiblement continue et une concentration d'un second matériau diélectrique augmentant de façon sensiblement continue. L'invention concerne également des procédés de dépôt de ce type de revêtement à faible émissivité, ainsi que des substrats présentant de tels revêtements.

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