Slurry treatment for deposition of rare earth hafnium tantalate-based barrier coatings

Methods of forming a sintered coating and the resulting coating on a substrate are provided. The sintered coating may include a rare earth compound having the following formula: A1-bBbZ1-dDdMO6, in which 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, and a sintering aid having a rare earth compound having the following formula: A1-bBbZ1-dDdMO6, in which A is a mixture of 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 or a mixture thereof; d is 0 to about 0.5; and M is Ta, Nb, or a mixture thereof. The coating may be densified at a sintering temperature (e.g., 1300 DEG C to 1600 DEG C). 提供了形成烧结涂层的方法以及基底上的所得涂层。烧结涂层可包含稀土化合物和烧结助剂，所述稀土化合物具有下式：A1-bBbZ1-dDdMO6，式中，A为Al、Ga、In、Sc、Y、Ce、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Fe、Cr、Co、Mn、Bi或它们的混合物；b为0至约0.5；Z为Hf、Ti或它们的混合物；D为Zr、Ce、Ge、Si或它们的混合物；d为0至约0.5；以及M为T