METHOD FOR IMPROVING SURFACE ROUGHNESS OF ENVIRONMENTAL BARRIER COATING, AND COMPONENT HAVING ENVIRONMENTAL BARRIER COATING WITH IMPROVED SURFACE ROUGHNESS

PROBLEM TO BE SOLVED: To provide a method for improving the surface roughness of plasma spraying EBC. SOLUTION: The method comprises: a step for preparing a component 10 having a plasma spraying environmental barrier coating; a step where an external layer 18 repair slurry is applied to the environm...

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Hauptverfasser:	BOUTWELL BRETT A, KIRBY GLEN HAROLD
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIME, MAGNESIA METALLURGY REFRACTORIES SLAG SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for improving the surface roughness of plasma spraying EBC. SOLUTION: The method comprises: a step for preparing a component 10 having a plasma spraying environmental barrier coating; a step where an external layer 18 repair slurry is applied to the environmental barrier coating of the component; a step for drying the environmental barrier coating having the applied external layer repair slurry; and a step where the component is sintered so as to produce a component having improved surface roughness. The external layer repair slurry is composed of: water; a primary outer material made of BSAS; and a slurry sintering aid selected from the group consisting of a rare earth nitrate, a rare earth acetate, a rare earth chloride, a rare earth oxide, ammonium phosphate, phosphoric acid and polyvinyl phosphonic acid, and their combinations. COPYRIGHT: (C)2011,JPO&INPIT