Patent · US Active

Method of producing an internal cavity in a ceramic matrix composite and mandrel therefor

US10450235B2 · kind B2 · utility

2Cited by

22References

13Claims

0Family size

Assignee

General Electric Company · US

Inventors

Paul E. Gray · North East, US
Herbert Chidsey Roberts · Greenville, US
Glenn Curtis Taxacher · Simpsonville, US

Key dates

Filing date	Feb 28, 2013
Grant date	Oct 22, 2019
Priority date	—
Expiry date	Apr 6, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/131
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A process for producing an internal cavity in a CMC article and mandrels used therewith. The process entails incorporating a mandrel made of a material that is substantially absorbed during thermal treatment of a preform to form the CMC article. The mandrel material is preferably reactive with one or more constituents of the CMC preform during the thermal treatment. The material is preferably silicon or a silicon alloy.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.