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1. (WO2018026579) SEAL COATS TO PREVENT SILICON LOSS DURING RE-MELT INFILTRATION OF SI CONTAINING COMPOSITES

Pub. No.:    WO/2018/026579    International Application No.:    PCT/US2017/043783
Publication Date: Fri Feb 09 00:59:59 CET 2018 International Filing Date: Wed Jul 26 01:59:59 CEST 2017
IPC: C04B 35/80
C04B 37/00
C04B 35/573
C04B 35/63
F01D 5/00
F01D 5/28
F01D 9/04
F01D 11/08
F01D 25/16
F02K 1/82
F02K 9/97
F23R 3/00
B32B 18/00
Applicants: GENERAL ELECTRIC COMPANY
Inventors: DUNN, Daniel Gene
CORMAN, Gregory Scot
WEAVER, Jared Hogg
Title: SEAL COATS TO PREVENT SILICON LOSS DURING RE-MELT INFILTRATION OF SI CONTAINING COMPOSITES
Abstract:
Provided is a method including obtaining ceramic matrix composite (CMC) with a first matrix portion including a silicon carbide and silicon phase dispersed therewithin, disposing a coating thereupon to form a sealed part, and forming thereupon another segment comprising a CMC, which may be another matrix portion including a silicon carbide and a silicon phase dispersed within therewithin. Also provided is a gas turbine component with a CMC segment (210) including a matrix portion including a silicon carbide and a silicon phase dispersed therewithin, a sealing layer (230) including silicon carbide enclosing the first segment (210), and a second segment (250) on the sealing layer (230), wherein the second segment (250) includes a melt-infiltrated CMC having a matrix portion including a silicon carbide and a silicon phase dispersed therewithin.