公开(公告)号：US20180112301A1

公开(公告)日：2018-04-26

申请号：US15786057

申请日：2017-10-17

Applicant: Rolls-Royce Corporation

Inventor： David C. Fairbourn ,  Sunny Chang ,  Johnny D. Grubbs

IPC: C23C4/02 ,  C23G1/10 ,  C23G1/08 ,  F01D5/00

CPC classification number: C23C4/02 ,  C04B41/009 ,  C04B41/5353 ,  C04B41/91 ,  C23G1/08 ,  C23G1/10 ,  F01D5/005 ,  F01D5/288 ,  F05D2300/6033 ,  C04B35/16

Abstract: A method for removing a coating including a rare earth silicate from a substrate including a ceramic or ceramic matrix composite may include contacting a coating comprising a rare earth silicate with a liquid comprising an active species. The active species may include at least one of a mineral acid or a base. The method also may include working the coating to cause removal of at least a portion of the coating.

公开(公告)号：US11053578B2

公开(公告)日：2021-07-06

申请号：US15786057

申请日：2017-10-17

Applicant: Rolls-Royce Corporation

Inventor： David C. Fairbourn ,  Sunny Chang ,  Johnny D. Grubbs

IPC: C23G1/08 ,  C23G1/10 ,  C23C4/02 ,  F01D5/28 ,  C04B41/00 ,  C04B41/53 ,  C04B41/91 ,  F01D5/00

Abstract: A method for removing a coating including a rare earth silicate from a substrate including a ceramic or ceramic matrix composite may include contacting a coating comprising a rare earth silicate with a liquid comprising an active species. The active species may include at least one of a mineral acid or a base. The method also may include working the coating to cause removal of at least a portion of the coating.