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Title: Method of producing an internal cavity in a ceramic matrix composite

A process for producing an internal cavity in a CMC article and mandrels used therewith. The process entails incorporating a mandrel made of a fusible material that is melted and drained during a thermal treatment of a CMC preform to form the CMC article. The mandrel material is preferably non-wetting and non-reactive with any constituents of the CMC preform during the thermal treatment. The mandrel is preferably tin or an alloy of tin.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1462180
Assignee:
GENERAL ELECTRIC COMPANY (Schenectady, NY) NETL
Patent Number(s):
10,011,043
Application Number:
13/780,584
Contract Number:
FC26-05NT42643
Resource Relation:
Patent File Date: 2013 Feb 28
Research Org:
General Electric Company, Schenectady, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING