US 11,078,567 B2 · Process for manufacturing a part made of nickle-based superalloy containing hafnium

Abstract

The invention relates to a process for manufacturing a part made of nickel-based monocrystalline superalloy containing hafnium. This process is noteworthy in that it comprises the following successive steps consisting in: —manufacturing a nickel-based monocrystalline superalloy that is not doped with hafnium, —manufacturing a part from this superalloy, —directly depositing on said part a layer of hafnium having a thickness of between 50 nm and 800 nm, —carrying out a diffusion treatment of the hafnium so as to form an interdiffusion layer at the surface of said part and to thus obtain a part made of nickel-based monocrystalline superalloy containing hafnium.

Claims19

Dependent claims

A process for manufacturing a hafnium-containing nickel-based single-crystal superalloy part, wherein the process comprises the following successive steps:

manufacturing a nickel-based, non-hafnium-doped, single-crystal superalloy,
manufacturing a part from this superalloy,
depositing, directly on said part, a layer of nanocrystalline or microcrystalline hafnium having a thickness comprised between 50 nm and 800 nm,
carrying out a hafnium diffusion treatment so as to form an interdiffusion layer on the surface of said part, and thereby obtain a hafnium-containing nickel-based single-crystal superalloy part.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/308,245Filed 9 Jun 2017

Priority

FR 165534310 Jun 2016

Published

US 2019/0153591 A123 May 2019

Granted

3 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C23C 14/5846
After-treatment: reactive treatment
C22C 19/057
And Mo or W: with the maximum Cr content being less 10%
C23C 10/28
Solid state diffusion of only metal elements or silicon into metallic material surfaces: using solids, e.g. powders, pastes
C23C 14/165
On metallic substrates or on substrates of boron or silicon: by cathodic sputtering

Process for manufacturing a part made of nickle-based superalloy containing hafnium

Life of this patent

Process for manufacturing a part made of nickle-based superalloy containing hafnium

Life of this patent

Abstract

Claims19