| 摘要 |
The invention relates to transparent single glazing formed by a sheet of glass provided with a coating consisting of a stack of thin layers acting on solar radiation, such that the glazing has a light transmission coefficient greater than or equal to 48% and a heat transmission coefficient (U) less than or equal to 5 W/m2/K, in particular after a heat treatment such as quenching. The glazing is characterised in that the aforementioned coating comprises, starting from the surface of the substrate: an underlayer consisting essentially of a nitride or oxynitride of aluminium and/or silicon, having a physical thickness of between 30 and 60 nm; a functional layer of niobium (Nb), having a physical thickness of between approximately 6 Nm and approximately 7 Nm; and an overlayer for protecting the functional layer in relation to the external environment, said overlayer formed by either a single layer consisting essentially of silicon nitride or by an assembly comprising the stacking of a layer essentially of silicon nitride and a layer of an oxide chosen from silicon oxide and titanium oxide, the total optical thickness of said overlayer being between 80 and 110 Nm. |
