Sol-gel alumina coating for improved cyclic oxidation resistance of silicon nitride

Irina Tsarenko; Sang Park; Honghua Du; Woo Y. Lee

doi:10.1111/j.1151-2916.2003.tb03528.x

Sol-gel alumina coating for improved cyclic oxidation resistance of silicon nitride

Irina Tsarenko, Sang Park, Honghua Du, Woo Y. Lee

Stevens Institute of Technology

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7 Scopus citations

Abstract

A 25 nm thick α-alumina layer was deposited on a turbine-grade silicon nitride by sol-gel dip coating and subsequent heat treatment in air at 1200°C. This layer had a nanometer grain structure. Silicon nitride protected by this thin layer showed a significant improvement in oxidation resistance over its uncoated counterpart after 200 cyclic exposures in air at 1250°C. The oxide layer grown on the coated silicon nitride also exhibited superior surface morphology, compared with the uncoated silicon nitride.

Original language	English
Pages (from-to)	1622-1624
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	86
Issue number	9
DOIs	https://doi.org/10.1111/j.1151-2916.2003.tb03528.x
State	Published - Sep 2003

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10.1111/j.1151-2916.2003.tb03528.x

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title = "Sol-gel alumina coating for improved cyclic oxidation resistance of silicon nitride",

abstract = "A 25 nm thick α-alumina layer was deposited on a turbine-grade silicon nitride by sol-gel dip coating and subsequent heat treatment in air at 1200°C. This layer had a nanometer grain structure. Silicon nitride protected by this thin layer showed a significant improvement in oxidation resistance over its uncoated counterpart after 200 cyclic exposures in air at 1250°C. The oxide layer grown on the coated silicon nitride also exhibited superior surface morphology, compared with the uncoated silicon nitride.",

author = "Irina Tsarenko and Sang Park and Honghua Du and Lee, \{Woo Y.\}",

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T1 - Sol-gel alumina coating for improved cyclic oxidation resistance of silicon nitride

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AU - Park, Sang

AU - Du, Honghua

AU - Lee, Woo Y.

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N2 - A 25 nm thick α-alumina layer was deposited on a turbine-grade silicon nitride by sol-gel dip coating and subsequent heat treatment in air at 1200°C. This layer had a nanometer grain structure. Silicon nitride protected by this thin layer showed a significant improvement in oxidation resistance over its uncoated counterpart after 200 cyclic exposures in air at 1250°C. The oxide layer grown on the coated silicon nitride also exhibited superior surface morphology, compared with the uncoated silicon nitride.

AB - A 25 nm thick α-alumina layer was deposited on a turbine-grade silicon nitride by sol-gel dip coating and subsequent heat treatment in air at 1200°C. This layer had a nanometer grain structure. Silicon nitride protected by this thin layer showed a significant improvement in oxidation resistance over its uncoated counterpart after 200 cyclic exposures in air at 1250°C. The oxide layer grown on the coated silicon nitride also exhibited superior surface morphology, compared with the uncoated silicon nitride.

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SP - 1622

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 9

ER -

Sol-gel alumina coating for improved cyclic oxidation resistance of silicon nitride

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