公开(公告)号：US11739429B2

公开(公告)日：2023-08-29

申请号：US17339411

申请日：2021-06-04

Applicant: Applied Materials, Inc.

Inventor： Abhishek Mandal ,  Nitin Deepak ,  Neha Gupta ,  Prerna Sonthalia Goradia ,  Ankur Kadam ,  Kenichi Ohno ,  David Alexander Britz ,  Lance A. Scudder

IPC: C23C16/40 ,  C23G1/10 ,  C23C16/02 ,  C23C16/34 ,  B64F5/40 ,  C11D7/32 ,  C11D7/06 ,  C11D7/08 ,  C11D11/00

CPC classification number: C23G1/10 ,  B64F5/40 ,  C11D7/06 ,  C11D7/08 ,  C11D7/3245 ,  C11D11/0023 ,  C23C16/0227 ,  C23C16/34 ,  C23C16/40

Abstract: Methods for refurbishing aerospace components by removing corrosion and depositing protective coatings are provided herein. In one or more embodiments, a method of refurbishing an aerospace component includes exposing the aerospace component containing corrosion to an aqueous cleaning solution. The aerospace component contains a nickel superalloy, an aluminide layer disposed on the nickel superalloy, and an aluminum oxide layer disposed on the aluminide layer. The method includes removing the corrosion from a portion of the aluminum oxide layer with the aqueous cleaning solution to reveal the aluminum oxide layer, then exposing the aluminum oxide layer to a post-rinse, and forming a protective coating on the aluminum oxide layer.