Heat treatable coated article with tin oxide inclusive layer...

C - Chemistry – Metallurgy – 03 – C

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C03C 17/36 (2006.01) B32B 17/10 (2006.01) B60J 1/02 (2006.01)

Patent

CA 2535626

A low-E coated article is provided, in certain example embodiments, with a layer including tin oxide provided between a layer including titanium oxide and a layer including silicon nitride. It has been found that the provision of such a tin oxide inclusive layer between silicon nitride and titanium oxide can significantly improve durability of the resulting coated article, especially after heat treatment (HT). In certain example embodiments, the coated article may be formed so as to have a fairly high visible transmission (TY or Tvis) to sheet resistance (Rs) ratio (i.e., a ratio Tvis/Rs). Coated articles herein may be used in the context of windows or the like (e.g., laminated vehicle windshields).

Cette invention se rapporte à un article revêtu à faible émissivité (E), qui comprend, dans certains modes de réalisation à titre d'exemples, une couche contenant de l'oxyde d'étain placée entre une couche contenant de l'oxyde de titane et une couche contenant du nitrure de silicium. On a découvert qu'en plaçant une telle couche contenant de l'oxyde d'étain entre du nitrure de silicium et de l'oxyde de titane, on améliore considérablement la durabilité de l'article revêtu qui en résulte, en particulier après un traitement thermique (HT). Dans certains modes de réalisation à titre d'exemples, cet article revêtu peut être formé de façon à présenter un rapport entre la transmission du spectre visible (TY ou T¿vis?) et la résistance de couche (R¿s?) (c'est-à-dire un rapport T¿vis?/R¿s?) relativement élevé. De tels articles revêtus peuvent être utilisés comme vitres ou similaires (par exemple comme pare-brise de véhicules stratifiés).

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