Substrate which is equipped with a stack having thermal...

C - Chemistry – Metallurgy – 03 – C

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C03C 17/36 (2006.01) B32B 17/10 (2006.01)

Patent

CA 2630626

The invention relates to a substrate (10), such as a transparent glass substrate, which is equipped with a stack of thin layers comprising an alternating stack of n functional layers (40) having reflection properties in the infrared and/or solar radiation range, particularly metal functional layers based on silver or metal alloy containing silver, and (n+1) dielectric coatings (20, 60), wherein n = 1, said coatings being formed by one or more layers (22, 24, 62, 64) of which at least one is made from a dielectric material, such that each functional layer (40) is disposed between at least two dielectric coatings (20, 60). The invention is characterised in that at least one functional layer (40) comprises a blocking coating (30, 50) consisting of at least one interface layer (32, 52) which is in direct contact with the functional layer and which is based on titanium oxide TiOx.

L'invention se rapporte à un substrat (10), notamment substrat verrier transparent, muni d'un empilement de couches minces comportant une alternance de « n » couches fonctionnelles (40) à propriétés de réflexion dans l'infrarouge et/ou dans le rayonnement solaire, notamment de couches fonctionnelles métalliques à base d'argent ou d'alliage métallique contenant de l'argent, et de « (n + 1 ) » revêtements diélectriques (20, 60), avec n >= 1 , lesdits revêtements étant composés d'une ou d'une pluralité de couches (22, 24, 62, 64), dont au moins une en matériau diélectrique, de manière à ce que chaque couche fonctionnelle (40) soit disposée entre au moins deux revêtements diélectriques (20, 60), caractérisé en ce qu'au moins une couche fonctionnelle (40) comporte un revêtement de blocage (30, 50) constitué d'au moins une couche d'interface (32, 52) immédiatement en contact avec ladite couche fonctionnelle, cette couche d'interface étant à base d'oxyde de titane TiOx.

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