Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Methods for making environmental barrier coatings using sintering aids
Methods for making an environmental barrier coating using a sintering aid involving applying a bond coat layer to the ceramic component; combining at least an organic solvent, a primary transition material selected from a rare earth disilicate, or a doped rare earth disilicate, and at least one slurry sintering aid to produce a transition layer slurry; combining at least an organic solvent, and a primary outer material selected from a rare earth monosilicate or a doped rare earth monosilicate to produce an outer layer slurry; combining at least an organic solvent, and a primary compliant material comprising BSAS or a rare earth doped BSAS to produce a compliant layer slurry; applying at least the transition layer slurry, and any one or more of the outer layer slurry, and the compliant layer slurry to the component; and sintering the component to produce the environmental barrier coating having at least the bond coat layer, a transition layer and any of an outer layer or a compliant layer whereby a reaction between the primary materials and the slurry sintering aid results in the transition layer having a porosity of from 0% to about 15% by volume of the transition layer, the outer layer having a porosity of from 0% to about 30% by volume of the outer layer, and the compliant layer having a porosity of from about 0% to about 30% by volume of the compliant layer.
Methods for making environmental barrier coatings using sintering aids
Methods for making an environmental barrier coating using a sintering aid involving applying a bond coat layer to the ceramic component; combining at least an organic solvent, a primary transition material selected from a rare earth disilicate, or a doped rare earth disilicate, and at least one slurry sintering aid to produce a transition layer slurry; combining at least an organic solvent, and a primary outer material selected from a rare earth monosilicate or a doped rare earth monosilicate to produce an outer layer slurry; combining at least an organic solvent, and a primary compliant material comprising BSAS or a rare earth doped BSAS to produce a compliant layer slurry; applying at least the transition layer slurry, and any one or more of the outer layer slurry, and the compliant layer slurry to the component; and sintering the component to produce the environmental barrier coating having at least the bond coat layer, a transition layer and any of an outer layer or a compliant layer whereby a reaction between the primary materials and the slurry sintering aid results in the transition layer having a porosity of from 0% to about 15% by volume of the transition layer, the outer layer having a porosity of from 0% to about 30% by volume of the outer layer, and the compliant layer having a porosity of from about 0% to about 30% by volume of the compliant layer.
Methods for making environmental barrier coatings using sintering aids
Verfahren zur Herstellung von Umgebungsschutzschichten mit Sinterhilfsmitteln
Procédés de fabrication de revêtements de barrière environnementale utilisant des additifs de frittage
KIRBY GLEN HAROLD (Autor:in) / BOUTWELL BRETT ALLEN (Autor:in)
24.02.2021
Patent
Elektronische Ressource
Englisch
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