CPC C04B 41/009 (2013.01) [C04B 2235/3224 (2013.01)] | 20 Claims |
1. A method of forming a coating on a surface of a substrate, the method comprising:
applying a slurry onto the surface of the substrate to form a coating, wherein the slurry comprises a rare earth compound dispersed within a solvent, wherein the rare earth compound has the formula: A1-bBbZ1-dDdMO6 where A is Al, Ga, In, Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Fe, Cr, Co, Mn, Bi, or a mixture thereof; b is 0 to about 0.5; Z is Hf, Ti, or a mixture thereof; D is Zr, Ce, Ge, Si, Ru, or a mixture thereof; d is 0 to about 0.5; and M is Ta, Nb, or a mixture thereof, the rare earth compound being a plurality of particles having a particle size distribution of D50 of about 0.2 μm to about 20 μm and D95 of about 10 μm to about 30 μm; and
densifying the coating at a sintering temperature between about 1300° C. to about 1600° C.
|