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:
Jun. 11, 2024
Filed:
May. 26, 2020
Safran, Paris, FR;
Amar Saboundji, Moissy-Cramayel, FR;
Luc Patrice Bianchi, Moissy-Cramayel, FR;
SAFRAN, Paris, FR;
Abstract
The present invention relates to a method for the protection of a hafnium-free, nickel-based monocrystalline superalloy part against corrosion and oxidation. The method comprises at least the following steps of: manufacturing a hafnium-free, nickel-based monocrystalline superalloy part (), depositing on the part a first hafnium-free sublayer (), depositing, on the first sublayer (), a second hafnium-doped sublayer (), depositing, on the second sublayer (), a third hafnium-free sublayer (), sandblasting the third sublayer () to at least partially separate the third sublayer () and increase the surface roughness of an upper sub-layer formed by the second sublayer () and at least partially by the third sublayer (), performing oxidation treatment so as to obtain at the surface a layer of hafnium-doped oxidised material (), depositing a thermal barrier layer () on the layer of oxidised material ().