US 11,697,622 B2
Barrier coating with calcium aluminosilicate additive
Richard Wesley Jackson, Mystic, CT (US); Xia Tang, West Hartford, CT (US); and Paul Sheedy, Bolton, CT (US)
Assigned to RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US)
Filed by United Technologies Corporation, Farmington, CT (US)
Filed on Sep. 5, 2019, as Appl. No. 16/562,103.
Prior Publication US 2021/0070666 A1, Mar. 11, 2021
Int. Cl. C04B 41/50 (2006.01); C04B 41/00 (2006.01); C04B 41/45 (2006.01); C04B 41/52 (2006.01); F01D 5/28 (2006.01)
CPC C04B 41/5024 (2013.01) [C04B 41/009 (2013.01); C04B 41/4523 (2013.01); C04B 41/52 (2013.01); F01D 5/288 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/3481 (2013.01); C04B 2235/5244 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/96 (2013.01); F05D 2220/32 (2013.01); F05D 2300/6033 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A gas turbine engine article comprising:
a substrate; and
a silicate-resistant barrier coating disposed on the substrate, the silicate-resistant barrier coating being composed of a refractory matrix and a calcium aluminosilicate additive (CAS additive) dispersed in the refractory matrix, the refractory matrix being selected from hafnia, hafnium silicate, zirconium silicate, or combinations thereof, and the silicate resistant barrier coating including, by mol. %, 0.1 to 30 of the CAS additive and a remainder being the refractory matrix.