US 11,739,429 B2
Methods for refurbishing aerospace components
Abhishek Mandal, Maharashtra (IN); Nitin Deepak, Mumbai (IN); Neha Gupta, Bangalore (IN); Prerna Sonthalia Goradia, Mumbai (IN); Ankur Kadam, Mumbai (IN); Kenichi Ohno, Sunnyvale, CA (US); David Alexander Britz, Los Gatos, CA (US); and Lance A. Scudder, Sunnyvale, CA (US)
Assigned to APPLIED MATERIALS, INC., Santa Clara, CA (US)
Filed by Applied Materials, Inc., Santa Clara, CA (US)
Filed on Jun. 4, 2021, as Appl. No. 17/339,411.
Claims priority of application No. 202041028360 (IN), filed on Jul. 3, 2020.
Prior Publication US 2022/0002883 A1, Jan. 6, 2022
Int. Cl. C23C 16/40 (2006.01); C23G 1/10 (2006.01); C23C 16/02 (2006.01); C23C 16/34 (2006.01); B64F 5/40 (2017.01); C11D 7/32 (2006.01); C11D 7/06 (2006.01); C11D 7/08 (2006.01); C11D 11/00 (2006.01)
CPC C23G 1/10 (2013.01) [B64F 5/40 (2017.01); C11D 7/06 (2013.01); C11D 7/08 (2013.01); C11D 7/3245 (2013.01); C11D 11/0023 (2013.01); C23C 16/0227 (2013.01); C23C 16/34 (2013.01); C23C 16/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of refurbishing an aerospace component, comprising:
exposing an aerospace component containing corrosion to an aqueous cleaning solution, wherein the aerospace component comprises a nickel superalloy, an aluminide layer disposed on the nickel superalloy, and an aluminum oxide layer disposed on the aluminide layer, and wherein the corrosion is contained on a first portion of the aluminum oxide layer while a second portion of the aluminum oxide layer is free of the corrosion;
removing the corrosion from the first portion of the aluminum oxide layer with the aqueous cleaning solution to reveal the first portion of the aluminum oxide layer; then
exposing the first and second portions of the aluminum oxide layer to a post-rinse; and
forming a protective coating on the first and second portions of the aluminum oxide layer.