Slurry Coating of Environmental Barrier Coating (EBC) on Silicon Carbide Based Material

Abstract:

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In order to increase the component lifetime of SiC based materials in combustion environments, environmental barrier coatings (EBCs) based on ceramic oxides are used to improve corrosion resistance of SiC, due to their high chemical stability. In this work, mullite and barium-strontium-aluminosilicate (BSAS) coatings were deposited by slurry dip coating on SiC substrates. Slurries were prepared by suspending commercial powders in water or ethanol, using appropriate dispersants. Substrates were dipped into the slurry and subsequently dried and heat treated at high temperature to promote densification. SEM observations were carried out to investigate the microstructure of the obtained coatings and to evaluate crack formation, porosity and adhesion.

Info:

Periodical:

Edited by:

Pietro VINCENZINI and Ghislain MONTAVON

Pages:

100-105

DOI:

10.4028/www.scientific.net/AST.66.100

Citation:

F. Bezzi et al., "Slurry Coating of Environmental Barrier Coating (EBC) on Silicon Carbide Based Material", Advances in Science and Technology, Vol. 66, pp. 100-105, 2010

Online since:

October 2010

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Price:

$35.00

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