Glass-ceramic

摘要

A subject matter of the invention is a glass-ceramic sheet provided, on at least a portion of at least one of its faces, with a coating of thin layers comprising at least one thin functional layer composed of a metal based on niobium metal Nb, or of an oxide based on a niobium oxide NbOx in which x is at most 0.5, the or each thin functional layer being framed by at least two thin layers made of dielectric materials, the physical thickness of the thin functional layer or, if appropriate, the combined physical thickness of all the thin functional layers being within a range extending from 8 to 15 nm.

主权项

1. An oven, stove or fireplace door comprising a glass-ceramic sheet, comprising, on at least a portion of at least one of its faces, a coating of layers comprising at least one functional layer comprising a niobium metal Nb or a niobium oxide NbOx in which x is at most 0.5, the at least one functional layer being framed by at least two layers comprising at least one dielectric material, wherein a thickness of the functional layer or a combined thickness of all functional layers ranges from 8 to 15 nm,
wherein the glass-ceramic sheet exhibits a light reflection factor of at most 15%, and a light transmission factor of at least 40%, within the meaning of the standard EN 410:1998.