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RARE EARTH SILICATE COATINGS SOLVOTHERMALLY GROWN OVER HIGH TEMPERATURE CERAMIC COMPONENTS
Methods are provided for forming high temperature coating over ceramic components, such as ceramic turbomachine components. In various embodiments, the method includes the step or process of at least partially filling a reactor vessel with a reaction solution containing a solution-borne rare earth cation source. A silicon-containing surface region of a ceramic component is submerged in the reaction solution, and a solvothermal growth process is carried-out. During the solvothermal growth process, the reaction solution is subject to elevated temperature and pressure conditions within the reactor vessel in the presence of a silicate anion source, which reacts with the solution-borne rare earth cation source to grow a rare earth silicate layer over the silicon-containing surface region of the ceramic component.
RARE EARTH SILICATE COATINGS SOLVOTHERMALLY GROWN OVER HIGH TEMPERATURE CERAMIC COMPONENTS
Methods are provided for forming high temperature coating over ceramic components, such as ceramic turbomachine components. In various embodiments, the method includes the step or process of at least partially filling a reactor vessel with a reaction solution containing a solution-borne rare earth cation source. A silicon-containing surface region of a ceramic component is submerged in the reaction solution, and a solvothermal growth process is carried-out. During the solvothermal growth process, the reaction solution is subject to elevated temperature and pressure conditions within the reactor vessel in the presence of a silicate anion source, which reacts with the solution-borne rare earth cation source to grow a rare earth silicate layer over the silicon-containing surface region of the ceramic component.
RARE EARTH SILICATE COATINGS SOLVOTHERMALLY GROWN OVER HIGH TEMPERATURE CERAMIC COMPONENTS
SELTENERDSILIKATBESCHICHTUNGEN, DIE SOLVOTHERMAL ÜBER HOCHTEMPERATURKERAMIKKOMPONENTEN GEWACHSEN SIND
REVÊTEMENTS DE SILICATE DE TERRES RARES DÉVELOPPÉS SOLVOTHERMIQUEMENT SUR DES COMPOSANTS CÉRAMIQUES À HAUTE TEMPÉRATURE
WHALEN TERENCE (author)
2020-07-29
Patent
Electronic Resource
English
Rare earth silicate coatings solvothermally grown over high temperature ceramic components
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