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REDUCING IMPURITIES IN CERAMIC MATRIX COMPOSITES
Example techniques may include depositing a slurry on at least a predetermined surface region of a ceramic matrix composite substrate. The slurry may include a solvent and particles comprising at least one of silicon metal or silicon carbide. The slurry may be dried to form a wicking layer on the predetermined surface region. The ceramic matrix composite substrate and the wicking layer may be heated to a temperature of at least 900 °C to wick at least one wickable species from the ceramic matrix composite substrate into the wicking layer. Substantially all of the wicking layer may be removed from the predetermined surface region. Example articles may include a ceramic matrix composite substrate. A wicking layer may be disposed on at least a predetermined surface region of the ceramic matrix composite substrate. The wicking layer may include at least one wicked species wicked from the ceramic matrix composite substrate. The method purifies CMC substrates from unwanted elements, such as boron, aluminium, magnesium, iron or calcium.
REDUCING IMPURITIES IN CERAMIC MATRIX COMPOSITES
Example techniques may include depositing a slurry on at least a predetermined surface region of a ceramic matrix composite substrate. The slurry may include a solvent and particles comprising at least one of silicon metal or silicon carbide. The slurry may be dried to form a wicking layer on the predetermined surface region. The ceramic matrix composite substrate and the wicking layer may be heated to a temperature of at least 900 °C to wick at least one wickable species from the ceramic matrix composite substrate into the wicking layer. Substantially all of the wicking layer may be removed from the predetermined surface region. Example articles may include a ceramic matrix composite substrate. A wicking layer may be disposed on at least a predetermined surface region of the ceramic matrix composite substrate. The wicking layer may include at least one wicked species wicked from the ceramic matrix composite substrate. The method purifies CMC substrates from unwanted elements, such as boron, aluminium, magnesium, iron or calcium.
REDUCING IMPURITIES IN CERAMIC MATRIX COMPOSITES
REDUZIERUNG DER VERUNREINIGUNGEN IN KERAMIKMATRIXVERBUNDSTOFFEN
RÉDUCTION DES IMPURETÉS DANS DES COMPOSITES À MATRICE CÉRAMIQUE
SHIM SUNGBO (author) / LEE KANG (author)
2017-04-26
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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