Methods of forming ceramic matrix composites using sacrificial fibers and related products

US10384981B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• David Bruce Hall · Ballston Lake, US
• James J. Murray · Mauldin, US
• Jason Robert Parolini · Anderson, US
• Michael Alan Vallance · Loudonville, US
• Juan Borja · Latham, US
• Daniel George Norton · Niskayuna, US
• Jared Hogg Weaver · Clifton Park, US
• Daniel Gene Dunn · Guilderland, US

Key dates

• Filing date: Jun 14, 2017
• Grant date: Aug 20, 2019
• Expiry date: Jun 14, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/80
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Methods for preparing ceramic matrix composites using melt infiltration and chemical vapor infiltration are provided as well as the resulting ceramic matrix composites. The methods and products include the incorporation of sacrificial fibers to provide improved infiltration of the fluid infiltrant. The sacrificial fibers are removed, such as decomposed during pyrolysis, resulting in the formation of regular and elongate channels throughout the ceramic matrix composite. Infiltration of the fluid infiltrant can then take place using the elongate channels resulting in improved density and an improved ceramic matrix composite product.