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:
Dec. 01, 2020
Filed:
Nov. 13, 2018
Safran Aircraft Engines, Paris, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Institut National Polytechnique DE Toulouse, Toulouse, FR;
Universite Paul Sabatier DE Toulouse, Toulouse, FR;
Juliette Hugot, Jaunay-Clan, FR;
Mathieu Boidot, Toulouse, FR;
Daniel Monceau, Nailloux, FR;
Djar Oquab, Mons, FR;
Claude Estournes, Rieumes, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE, Toulouse, FR;
UNIVERSITE PAUL SABATIER DE TOULOUSE, Toulouse, FR;
Abstract
The object of the present invention is to produce a metal part equipped with a protection system, particularly for turbine blades for aircraft engines, having a thermal barrier that is improved in terms of thermal properties, adhesion to the part and resistance to oxidation/corrosion. In order to achieve this, the method according to the invention produces in a single step, from specific ceramics, coating layers using SPS technology. According to one embodiment, a metal part is produced according to an SPS flash sintering method and comprises a superalloy substrate (), a metal sub-layer (), a TGO oxide layer () and the thermal barrier () formed by said method from at least two chemically and thermally compatible ceramic layers (). A first ceramic (), referred to as the inner ceramic, is designed to have a substantially higher expansion coefficient. The outer ceramic () is designed to have at least lower thermal conductivity, and a sintering temperature and/or maximum operating temperature that is substantially higher. The thermal barrier () has a composition and porosity gradient () from the metal sub-layer () to the outer ceramic ().