Publication number: 20180079649
Abstract: A compound is provided that has the formula: Ln4-x-zBxDzM2-n-yAnByO9, where Ln comprises La, Ce, Pr, Nd, Pm, Sm, or a mixture thereof; x is 0 to about 2; D is La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof, where: D is not equal to Ln; if D is La, Ce, Pr, Nd, Pm, Sm, or a mixture thereof, then z is 0 to less than 4; if D is Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof, then z is 0 to about 2; M comprises Ga, Al, or a combination thereof; A comprises Fe, In, or a combination thereof; n is 0 to about 1; y is 0 to about 1; and x+y is greater than 0. In one embodiment, a composition is generally provided that includes a silicon-containing material and such a boron-doped refractory compound.
Type:
Application
Filed:
September 16, 2016
Publication date:
March 22, 2018
Inventors:
Glen Harold Kirby, Julin Wan
Publication number: 20170183782
Abstract: A coated substrate is provided that can include a substrate defining a surface, and an abradable coating on the surface of the substrate. The abradable coating can comprise La2-xAxMo2-y-y? WyBy?O9-? forming a crystalline structure, where A comprises Li, Na, K, Rb, Cs, Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, Be, Mg, Ca, Sr, Ba, Cu, Bi, Cd, Zn, Ag, Au, Pt, Ir, Rh, Ru, Pd, or combinations thereof; 0<x?about 0.2 (e.g., about 0.1?x?about 0.15); 0?y?about 1.5 (e.g., about 0.01?y?about 1.5); B comprises Ta, Nb, V, Fe, Cr, Mn, Co, Ni, Sn, Ga, Al, Re, In, S, or combinations thereof; 0?y??about 0.2, wherein the sum of y and y? is about 0.01 to about 1.6; and 0???about 0.2.
Type:
Application
Filed:
April 24, 2015
Publication date:
June 29, 2017
Inventor:
Glen Harold KIRBY