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US 10,865,138 B2Granted
Infrared mirror with a thermally stable layer
AssigneeOerlikon Surface Solutions AG, PfäFfikon
InventorsJuergen Ramm, Othmar Zueger, Beno Widrig, Helmut Rudigier
Life of this patent
Estimating the term…
Abstract
Component surfaces are coated with thermally stable layers. In particular infrared mirror surfaces or surfaces of combustion chambers are coated with at least one layer consisting of thermally stable Al—Cr—O in such a manner that the absorption, reflection or transmission of infrared radiations (hereinafter also called thermal radiations) is influenced.
Claims11
A component comprising:
- an infrared (IR) mirror having a surface;
- and a coating on the surface comprising an oxide layer, and the oxide layer is a temperature-stable Al—Cr—O layer,
- wherein the temperature-stable Al—Cr—O layer has a layer thickness that is thinner than typical wavelengths of the IR radiation, and a concentration of aluminum in the temperature-stable Al—Cr—O layer is between 1 at % and 70 at %, wherein the at % range is defined as an amount of aluminum as a percentage of a total amount of aluminum and chromium.
An apparatus comprising a combustion chamber, the combustion chamber having an inner wall, at least a part of the inner wall being provided with an infrared (IR) mirror having a surface;
- and a coating on the surface comprising an oxide layer, and the oxide layer is a temperature-stable Al—Cr—O layer,
- wherein the temperature-stable Al—Cr—O layer has a layer thickness that is thinner than typical wavelengths of the IR radiation, and a concentration of aluminum in the temperature-stable Al—Cr—O layer is between 1 at % and 70 at %, wherein the at % range is defined as an amount of aluminum as a percentage of a total amount of aluminum and chromium.
Dependencies are inferred from the claim text.