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Creep-resistant environmental barrier coatings
An environmental barrier coating system (14), a method of application and an article (10) formed thereby suitable for reducing creep by incorporation of doping materials in grain boundaries of a bond coat layer (16) to inhibit creep displacement of the EBC system (14) when subjected to shear loading at elevated temperatures. The EBC system (14) includes the bond coat layer (16) on a silicon-containing substrate (12) and at least one ceramic layer (18,20,22) on the bond coat layer (16). The bond coat layer (16) includes silicon and at least one doping material that includes a creep-resistant element. The doping material is located at grain boundaries within the bond coat layer in sufficient size and quantity to improve the creep resistance of the bond coat layer.
Creep-resistant environmental barrier coatings
An environmental barrier coating system (14), a method of application and an article (10) formed thereby suitable for reducing creep by incorporation of doping materials in grain boundaries of a bond coat layer (16) to inhibit creep displacement of the EBC system (14) when subjected to shear loading at elevated temperatures. The EBC system (14) includes the bond coat layer (16) on a silicon-containing substrate (12) and at least one ceramic layer (18,20,22) on the bond coat layer (16). The bond coat layer (16) includes silicon and at least one doping material that includes a creep-resistant element. The doping material is located at grain boundaries within the bond coat layer in sufficient size and quantity to improve the creep resistance of the bond coat layer.
Creep-resistant environmental barrier coatings
Kriechfeste Umgebungssperrschichten
Revêtements formant une barrière environnementale résistant au fluage
DAS RUPAK (author) / BRITTINGHAM ROBERT ALAN (author)
2018-05-09
Patent
Electronic Resource
English
CMAS-RESISTANT ENVIRONMENTAL BARRIER AND THERMAL BARRIER COATINGS
| European Patent Office | 2018
CMAS-RESISTANT ENVIRONMENTAL BARRIER AND THERMAL BARRIER COATINGS
| European Patent Office | 2023