'MULTI-LAYER SYSTEM RESISTANT TO ENVIRONMENTAL INFLUENCES FOR HEAT PROTECTION APPLICATION'

摘要

1. Multi-layer system of high reflectivity in the far infrared spectral region and of high transmissivity in the visible spectral region and in the near infrared spectral region, having a base, a metal layer, preferably a silver layer, and at least one dielectric covering layer on both sides of the metal layer, at least one of the two dielectric covering layer containing bismuth oxide, characterized in that the dielectric covering layer (16, 17) consists of an anti-corrosion layer (11, 15) of bismuth oxide (Bi2 O3 )and a UV-protective layer (12, 14) of titanium oxide (TiOx and/or titanium oxide nitride (TiOx TiN) and the bismuth fraction is between 10 and 85 per cent by weight of the total metal content of the dielectric covering layer.