US 12,312,276 B2
Self-healing matrix for a ceramic composite
Xia Tang, West Hartford, CT (US); James T. Beals, West Hartford, CT (US); Richard Wesley Jackson, Mystic, CT (US); Ying She, East Hartford, CT (US); Andrew J. Lazur, Laguna Beach, CA (US); Kathryn S. Read, Marlborough, CT (US); and Mary Colby, West Hartford, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on May 24, 2021, as Appl. No. 17/328,213.
Application 17/328,213 is a continuation of application No. 16/226,143, filed on Dec. 19, 2018, granted, now 11,046,615.
Prior Publication US 2021/0276922 A1, Sep. 9, 2021
Int. Cl. C04B 35/571 (2006.01); C04B 35/565 (2006.01); C04B 35/628 (2006.01); C04B 35/80 (2006.01); C04B 41/50 (2006.01)
CPC C04B 35/571 (2013.01) [C04B 35/565 (2013.01); C04B 35/62863 (2013.01); C04B 35/80 (2013.01); C04B 41/5059 (2013.01); C04B 2235/3826 (2013.01); C04B 2235/428 (2013.01); C04B 2235/5244 (2013.01); C04B 2235/5418 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A ceramic matrix composite (CMC) component comprising:
a plurality of fibers; and
a ceramic matrix formed of silicon carbide, wherein the ceramic matrix is continuous and wherein the plurality of fibers are embedded in and disposed throughout the ceramic matrix, the ceramic matrix comprising:
a first region comprising deposits of a first self-healing material capable of sealing cracks in the matrix; and
a second region distinct from the first region and comprising deposits of a second self-healing material capable of regenerating an environmental barrier coating;
wherein the deposits of the first and second self-healing materials are dispersed throughout the ceramic matrix in each of the first and second regions, respectively;
wherein the first and second regions are non-overlapping and wherein the second self-healing material is absent from the first region;
wherein the first self-healing material is selected from a group consisting of silicon boride, boron carbide, silicon borocarbide, silicon boronitrocarbide, and mixtures thereof; and
wherein the second self-healing material is selected from a group consisting of borides of rare earth elements, hafnium boride, zirconium boride, titanium boride, tantalum boride, silicides of rare earth elements, hafnium silicide, zirconium silicide, titanium silicide, tantalum silicide, molybdenum disilicide, aluminum oxide, alkaline metal oxides, oxide of rare earth elements and mixtures thereof.