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

C - Chemistry – Metallurgy – 03 – C

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Details

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

Patent

CA 2630625

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 silver-based metal functional layers, and (n+1) dielectric coatings (20, 60), wherein n = 1, said coatings being formed by one or more layers (22, 24, 62, 64), 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: (i) an interface layer (32, 52) which is in direct contact with the functional layer and which is made from a material other than metal, and (ii) a metal layer (34, 54) which is made from a metal material and which is in direct contact with the interface layer (32, 52).

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, 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), 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 : o d'une part d'une couche d'interface (32, 52) immédiatement en contact avec ladite couche fonctionnelle, cette couche d'interface étant en un matériau qui n'est pas un métal, o d'autre part, d'au moins une couche métallique (34, 54) en un matériau métallique, immédiatement en contact avec ladite couche d'interface (32, 52).

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