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SUSPENSION PLASMA SPRAY COMPOSITION AND PROCESS FOR DEPOSITION OF RARE EARTH HAFNIUM TANTALATE BASED COATINGS
Methods for forming a coating (108) on a surface (103) of a substrate (102) are provided. The method can include: preheating the surface (103) of the substrate (102); spraying a slurry suspension onto the surface (103) of the substrate (102) to form a coating (108), wherein the slurry composition comprises a rare earth compound, a sintering agent, and 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 0.5; Z is Hf, Ti, or a mixture thereof; D is Zr, Ce, Ge, Si, or a mixture thereof; d is 0 to 0.5; and M is Ta, Nb, or a mixture thereof; and thereafter, heat treating the coating (108) to densify the coating (108) from an initial porosity to a sintered porosity.
SUSPENSION PLASMA SPRAY COMPOSITION AND PROCESS FOR DEPOSITION OF RARE EARTH HAFNIUM TANTALATE BASED COATINGS
Methods for forming a coating (108) on a surface (103) of a substrate (102) are provided. The method can include: preheating the surface (103) of the substrate (102); spraying a slurry suspension onto the surface (103) of the substrate (102) to form a coating (108), wherein the slurry composition comprises a rare earth compound, a sintering agent, and 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 0.5; Z is Hf, Ti, or a mixture thereof; D is Zr, Ce, Ge, Si, or a mixture thereof; d is 0 to 0.5; and M is Ta, Nb, or a mixture thereof; and thereafter, heat treating the coating (108) to densify the coating (108) from an initial porosity to a sintered porosity.
SUSPENSION PLASMA SPRAY COMPOSITION AND PROCESS FOR DEPOSITION OF RARE EARTH HAFNIUM TANTALATE BASED COATINGS
SUSPENSIONSPLASMASPRITZZUSAMMENSETZUNG UND VERFAHREN ZUM ABSCHEIDEN VON BESCHICHTUNGEN BASIEREND AUF SELTENEN ERDEN UND HAFNIUMTANTALAT
COMPOSITION PAR PULVÉRISATION DE PLASMA EN SUSPENSION ET PROCÉDÉ DE DÉPÔT DE REVÊTEMENTS À BASE DE TANTALATE D'HAFNIUM DE TERRES RARES
KIRBY GLEN HAROLD (author) / BARBER EVIN NATHANIEL (author) / STANKO GARY MICHAEL (author)
2022-11-30
Patent
Electronic Resource
English
| European Patent Office | 2022
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| European Patent Office | 2022