Rtx Corporation

Raytheon Technologies Corporation

Nitin Garg

Olivier H Sudre

Ying She

Andrew J Lazur

John H Shaw

Cristal Chan

Andrew Joseph Lazur

Kathryn S Read

Tania Bhatia Kashyap

Richard Wesley Jackson, Iii

Mary Colby

Ben Callaway

Disclosed herein is a chemical vapor infiltration method including flowing ceramic precursors through a preform and depositing a matrix material on the preform at a first gas infiltration pressure, increasing the gas filtration pressure to a second gas infiltration pressure, and lowering the gas infiltration pressure to a third gas infiltration pressure which is intermediate to the first and second gas infiltration pressures.

CVI matrix densification process

Disclosed is a coated composite comprising a seal coat disposed on a composite material wherein the seal coat comprises protective particles and a matrix.

High temperature composite materials with erosion resistant seal coat

A ceramic matrix composite includes a plurality of ceramic fibers and an interface coating disposed on the plurality of ceramic fibers. The interface coating includes a carbon-based layer disposed on each ceramic fiber of the plurality of ceramic fibers and a boron-nitride based layer disposed on the first carbon-based layer. The ceramic matrix composite also includes a ceramic matrix surrounding the plurality of ceramic fibers. A ceramic matrix composite and a method of forming a ceramic matrix composite component are also disclosed.

Ceramic component

A ceramic matrix composite includes a ceramic matrix, fibers embedded in the ceramic matrix, and an interfacial coating system on each of the fibers. The interfacial coating system includes alternating layers of boron nitride layers of individual thicknesses of about 50 nanometers to 200 nanometers and carbon layers of individual thicknesses of less than 5 nanometers.

Ceramic matrix composite with interfacial coating system

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West Hartford, CT, United States of America

Nitin Garg