Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Environmental barrier coatings for high temperature ceramic components
An environmental barrier coating (12) for high temperature ceramic components (10), the barrier coating comprising: a bond coat layer (14); an optional silica layer (15); and at least one transition layer (16) including: from about 85% to about 99% by volume of the transition layer of a primary transition material comprising a rare earth disilicate, or a doped rare earth disilicate; and from 1% to about 15% by volume of the transition layer of a secondary material selected from the group consisting of Fe 2 O 3 , iron silicates, rare earth iron oxides, Al 2 O 3 , mullite, rare earth aluminates, rare earth aluminosilicates, TiO 2 , rare earth titanates, Ga 2 O 3 , rare earth gallates, NiO, nickel silicates, rare earth nickel oxides, Lnb metals, Lnb 2 O 3 , Lnb 2 Si 2 O 7 , Lnb 2 SiO 5 , borosilicate glass, alkaline earth silicates, alkaline earth rare earth oxides, alkaline earth rare earth silicates, and mixtures thereof; wherein the transition layer is applied to the component as a slurry comprising at least water, the primary transition material and at least one slurry sintering aid, and wherein a reaction between the slurry sintering aid and the primary transition material results in the transition layer comprising a porosity of from 0% to about 15% by volume of the transition layer.
Environmental barrier coatings for high temperature ceramic components
An environmental barrier coating (12) for high temperature ceramic components (10), the barrier coating comprising: a bond coat layer (14); an optional silica layer (15); and at least one transition layer (16) including: from about 85% to about 99% by volume of the transition layer of a primary transition material comprising a rare earth disilicate, or a doped rare earth disilicate; and from 1% to about 15% by volume of the transition layer of a secondary material selected from the group consisting of Fe 2 O 3 , iron silicates, rare earth iron oxides, Al 2 O 3 , mullite, rare earth aluminates, rare earth aluminosilicates, TiO 2 , rare earth titanates, Ga 2 O 3 , rare earth gallates, NiO, nickel silicates, rare earth nickel oxides, Lnb metals, Lnb 2 O 3 , Lnb 2 Si 2 O 7 , Lnb 2 SiO 5 , borosilicate glass, alkaline earth silicates, alkaline earth rare earth oxides, alkaline earth rare earth silicates, and mixtures thereof; wherein the transition layer is applied to the component as a slurry comprising at least water, the primary transition material and at least one slurry sintering aid, and wherein a reaction between the slurry sintering aid and the primary transition material results in the transition layer comprising a porosity of from 0% to about 15% by volume of the transition layer.
Environmental barrier coatings for high temperature ceramic components
Umgebungsschutzschichten für keramische Hochtemperaturkomponenten
Revêtements de barrière environnementale pour composants céramiques à haute température
KIRBY GLEN HAROLD (Autor:in) / BOUTWELL BRETT ALLEN (Autor:in) / SUBIT JESSICA L (Autor:in)
03.03.2021
Patent
Elektronische Ressource
Englisch
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