09-01-2020 дата публикации
Номер: US20200011572A1
Принадлежит:
Thermoregulated multilayer material characterized in that it comprises at least one substrate and one thermoregulated layer, said thermoregulated multilayer material having: for λ radiation of between 0.25 and 2 μm, an absorption coefficient αm≥0.8; and, for incident λ radiation of between 7.5 and 10 μm, a reflection coefficient ρm: ρm≥0.85, when the temperature T of said multilayer material is ≤100° C.; ρm between 0.3 and 0.85, when the temperature T of said multilayer material is between 0 and 400° C. 1. A thermoregulated multilayer material comprising: [{'sub': 's', 'a transmission coefficient Γsubstantially equal to 0, for rays with a wavelength λ in a range of from 0.25 to 25 μm;'}, 'a reflection coefficient ρs≥0.9, for incident rays with wavelength λ of between 7.5 and 10 μm;, 'a support having'}a thermoregulated layer having a thickness in a range of from 50 to 500 nm and a base of rare earth perovskite cobaltites or rare earth perovskite nickelates or rare earth manganites, the thermoregulated layer topping one of the surfaces of the support; for rays with wavelength λ of between 0.25 and 2.5 μm; an absorption coefficient αm≥0.8; and', {'sub': 'm', 'claim-text': [{'sub': 'm', 'ρ≥0.85, when the temperature T of said multilayer material (M) is ≤100° C.;'}, {'sub': 'm', '0.3≤ρ≤0.85, when the temperature T of said multilayer material in a range of from 100 to 400° C.'}], 'for incident rays with wavelength λ of between 7.5 and 10 μm; a reflection coefficient ρ, wherein], 'wherein the thermoregulated material has2. The thermoregulated multilayer material according to claim 1 , wherein the perovskites have formula:{'sub': '3', 'ABO'}wherein:“A” is at least one single chemical element or a group of chemical elements belonging to the rare earths group;“B” is either cobalt Co, or nickel Ni, or manganese Mn, and{'sub': '3', '“O” represents three oxygens.'}3. The thermoregulated multilayer material according to claim 2 , wherein “A” corresponds to at least one chemical ...
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