Heat treatable coated articles with metal nitride layer and...

C - Chemistry – Metallurgy – 03 – C

Patent

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C03C 17/34 (2006.01)

Patent

CA 2443742

A heat treatable coated article including a solar management layer for reflecting infrared (IR) or the like, is provided between a substrate and an overlying dielectric layer. An underlying dielectric layer between the substrate and solar management layer is optional. In certain embodiments, the solar management layer may include NiCrNx while the dielectric layer(s) may include a nitride such as silicon nitride. By nitriding the solar management layer, it has been found that the resulting coated article is more color stable upon heat treatment (HT). For example, the coated article may have a .DELTA.E* value (transmissive and/or glass side reflective) of no greater than 5.0, more preferably no greater than 4.0, and most preferably no greater than 3Ø Coated articles herein may be used in the context of insulating glass (IG) window units, vehicle windows, or the like.

L'invention concerne un article enduit apte au traitement thermique dans lequel une couche de gestion solaire réfléchissant les rayons infrarouges (IR) ou analogue est appliquée entre un substrat et une couche diélectrique recouvrante. On peut éventuellement appliquer une couche diélectrique sous-jacente entre le substrat et la couche de gestion solaire. Dans certains modes de réalisation, la couche de gestion solaire peut contenir du NiCrN¿x?, alors que la/les couche(s) diélectrique(s) peuvent contenir du nitrure tel que le nitrure de silicium. En soumettant la couche de gestion solaire à la nitruration, on obtient un article enduit chromatiquement plus stable lorsqu'il est traité thermiquement (HT). Par exemple, l'article enduit peut présenter une valeur .DELTA.E* (transmissive et/ou à réflexion latérale sur du verre) inférieure à 5,0, plus préférablement inférieure à 4,0, et plus préférablement encore inférieure à 3,0. On peut utiliser ces articles enduits dans des unités de fenêtres en verre isolant (IG), les fenêtres de véhicules, ou analogues.

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