SUBSTRATE COATED WITH THERMALLY TREATED LOW-EMISSION LAYER Russian patent published in 2020 - IPC C03C17/36 

FIELD: technological processes.

SUBSTANCE: disclosed is glass (10) having low-emission coating (20) consisting of a plurality of thin films, comprising: a first dielectric layer (21) comprising Si_xN_y and deposited directly on the substrate, a first infrared-reflecting layer (23) containing silver and applied on first dielectric layer (21), first protective layer (24) containing NiCr and deposited on first infrared radiation-reflecting layer (23), second infrared-reflecting layer (26) containing silver and deposited on first protective layer (24), and further applied upper dielectric structure. Coating (20) further comprises a first core structure (22) disposed between the first dielectric layer (21) and the first infrared-reflective layer (23) and comprising a first core layer (221) comprising one of NiCr, NiCrO_x, TiO_x, ZnAlO_x and ZnO_x, and absorbing layer (222) containing NiCr, which is in direct contact with first infrared-reflecting layer (23), and intermediate dielectric structure (25) located under second infrared-reflective layer (26) in direct contact with it and containing second dielectric layer (251) containing ZnAlO_x, third dielectric layer (252) containing Si_xN_y, and second core layer (253) containing at least one of NiCr, NiCrO_x, TiO_x, ZnAlO_x and ZnO_x. Upper dielectric structure (27) comprises a second protective layer (271) comprising at least one of NiCr, NiCrO_x, TiO_x and ZnAlO_x, fourth dielectric layer (272) comprising at least one of ZnSnO_x, ZnAlO_x, SiO_xN_y, SiO_x, Si_xN_y, TiO_x and ZnO_x, and upper dielectric layer (273) containing SiO_xN_y. At that, reflection color characteristics a* and b* of low-emissive coating (20) of glass (10) on glass side are determined at angle of 60° and less, wherein the change depending on the viewing angle is less than 3 points and is in the negative region compared to the observation at a right angle.

EFFECT: present invention relates to low-emission coating, which is used for heat-insulating glass, transmits daylight, has high resistance to heat treatment and contains infrared-reflecting layers.

10 cl, 2 dwg, 1 tbl