METHOD FOR MAKING SOLVENT BASED ENVIRONMENTAL BARRIER COATING USING SINTERING AID

PROBLEM TO BE SOLVED: To provide a method for making an environmental barrier coating for a ceramic component which is suitable for use in a high temperature water vapor environment present in a gas turbine engine. SOLUTION: The method for making an environmental barrier coating 12 comprises: a step...

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Hauptverfasser:	BOUTWELL BRETT A, KIRBY GLEN HAROLD
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY COMBUSTION APPARATUS COMBUSTION ENGINES COMBUSTION PROCESSES COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING LIME, MAGNESIA MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES REFRACTORIES SLAG STEAM ENGINES TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for making an environmental barrier coating for a ceramic component which is suitable for use in a high temperature water vapor environment present in a gas turbine engine. SOLUTION: The method for making an environmental barrier coating 12 comprises: a step for mixing an organic solvent, and a primary transition material such as a rare earth disilicate, or a doped rare earth disilicate to produce a transition layer slurry; a step for mixing an organic solvent, and a primary outer member composed of an rare earth monosilicate, or a doped rare earth monosilicate to produce an external layer slurry; a step for mixing an organic solvent, and a primary compliant material composed of BSAS, or rare earth doped BSAS to produce a compliant layer slurry; and a step for applying one or more selected from the transition layer slurry, the external layer slurry and the compliant layer slurry to a component 10, applying a sol-gel solution containing an aqueous solution of a water soluble salt sintering aid, or an organic solvent solution of a solvent soluble salt sintering aid into the applied slurry, and sintering the component 10. COPYRIGHT: (C)2011,JPO&INPIT