SUBSTRATE COATED WITH A STACK OF FUNCTIONAL LAYERS HAVING IMPROVED MECHANICAL PROPERTIES

摘要

The invention concerns a transparent substrate provided with a stack of thin layers comprising n alternating functional layers having reflection properties in the infrared and/or solar radiation range with n≥2 and n+1 coatings comprising one or a plurality of dielectric layers, such that each functional layer is arranged between two coatings, the coatings and the functional layers are numbered depending on the position of same relative to the transparent substrate, bottom coating 1 is placed on top of the transparent substrate and beneath functional layer 1, intermediate coatings 2 to n are placed between two functional layers, and top coating n+1 is placed on top of functional layer n, characterised in that at least one of the top or intermediate coatings 2 to n+1, preferably an intermediate coating 2 to n, comprises at least one barrier coating comprising at least two barrier layers, one layer comprising silicon and one layer made from aluminium nitride.