The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2017
Filed:
Jan. 14, 2015
Mary Anne Alvin, Pittsburgh, PA (US);
Iver Anderson, Ames, IA (US);
Andy Heidlof, West Des Moines, IA (US);
Emma White, Ames, IA (US);
Bruce Mcmordie, Perkasie, PA (US);
Mary Anne Alvin, Pittsburgh, PA (US);
Iver Anderson, Ames, IA (US);
Andy Heidlof, West Des Moines, IA (US);
Emma White, Ames, IA (US);
Bruce McMordie, Perkasie, PA (US);
U.S. Department of Energy, Washington, DC (US);
Abstract
A method and apparatus for generating transpiration cooling using an oxidized porous HTA layer metallurgically bonded to a substrate having micro-channel architectures. The method and apparatus generates a porous HTA layer by spreading generally spherical HTA powder particles on a substrate, partially sintering under Ovacuum until the porous HTA layer exhibits a porosity between 20% and 50% and a neck size ratio between 0.1 and 0.5, followed by a controlled oxidation generating an oxidation layer of alumina, chromia, or silica at a thickness of about 20 to about 500 nm. In particular embodiments, the oxidized porous HTA layer and the substrate comprise Ni as a majority element. In other embodiments, the oxidized porous HTA layer and the substrate further comprise Al, and in additional embodiments, the oxidized porous HTA layer and the substrate comprise γ-Ni+γ'-NiAl.