Patent ID: 11866363
Assignee: EUROKERA S.N.C.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC C  F  B | IPC B  C  F

Claim 0:
1. A plate configured to equip appliances of a chimney insert, stove, chimney, boiler or furnace, heating appliance, fireplace or equivalent type and/or to serve as a fire barrier, said plate comprising:
at least one glass-ceramic substrate coated on at least one of its faces with the following stack of layers, in this order from the glass-ceramic substrate:
1) A first silicon nitride layer having an oxygen content of less than 1% by weight and a thickness comprised in the range from 5 nm to 50 nm;
2) An indium tin oxide layer having a thickness of 80 nm or less; and
3) a second silicon nitride layer having a thickness comprised in the range from 10 nm to 100 nm,
wherein the first silicon nitride layer is in direct contact with the glass-ceramic substrate and the indium tin oxide layer, wherein the indium tin oxide layer is in direct contact with the first silicon nitride layer and the second silicon nitride layer, and wherein the second silicon nitride layer is in direct contact with the indium tin oxide layer and the atmosphere.