Characterization of Si3N4 coated with chemically-vapor-deposited mullite after Na2SO4-induced corrosion

Woo Y. Lee; Karren L. More; David P. Stinton; Yong W. Bae

doi:10.1111/j.1151-2916.1996.tb09003.x

Characterization of Si₃N₄ coated with chemically-vapor-deposited mullite after Na₂SO₄-induced corrosion

Woo Y. Lee, Karren L. More, David P. Stinton, Yong W. Bae

Center for Nanophase Matls Sciences

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Si₃N₄ substrates coated with chemically-vapor-deposited, crystalline mullite (3Al₂O₃·2SiO₂) were subjected to a corrosive environment containing Na₂SO₄ and O₂ at 1000°C for 100 h. The composition and microstructure of the as-deposited and corroded specimens were examined and compared. The coating appeared to be effective in preserving and therefore protecting the surface microstructure of the underlying Si₃N₃ substrates. However, a small degree of Na penetration through mullite grain boundaries was observed to a coating depth of ∼1 μm.

Original language	English
Pages (from-to)	2489-2492
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	79
Issue number	9
DOIs	https://doi.org/10.1111/j.1151-2916.1996.tb09003.x
State	Published - Sep 1996

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title = "Characterization of Si3N4 coated with chemically-vapor-deposited mullite after Na2SO4-induced corrosion",

abstract = "Si3N4 substrates coated with chemically-vapor-deposited, crystalline mullite (3Al2O3·2SiO2) were subjected to a corrosive environment containing Na2SO4 and O2 at 1000°C for 100 h. The composition and microstructure of the as-deposited and corroded specimens were examined and compared. The coating appeared to be effective in preserving and therefore protecting the surface microstructure of the underlying Si3N3 substrates. However, a small degree of Na penetration through mullite grain boundaries was observed to a coating depth of ∼1 μm.",

author = "Lee, \{Woo Y.\} and More, \{Karren L.\} and Stinton, \{David P.\} and Bae, \{Yong W.\}",

year = "1996",

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doi = "10.1111/j.1151-2916.1996.tb09003.x",

language = "English",

volume = "79",

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journal = "Journal of the American Ceramic Society",

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T1 - Characterization of Si3N4 coated with chemically-vapor-deposited mullite after Na2SO4-induced corrosion

AU - Lee, Woo Y.

AU - More, Karren L.

AU - Stinton, David P.

AU - Bae, Yong W.

PY - 1996/9

Y1 - 1996/9

N2 - Si3N4 substrates coated with chemically-vapor-deposited, crystalline mullite (3Al2O3·2SiO2) were subjected to a corrosive environment containing Na2SO4 and O2 at 1000°C for 100 h. The composition and microstructure of the as-deposited and corroded specimens were examined and compared. The coating appeared to be effective in preserving and therefore protecting the surface microstructure of the underlying Si3N3 substrates. However, a small degree of Na penetration through mullite grain boundaries was observed to a coating depth of ∼1 μm.

AB - Si3N4 substrates coated with chemically-vapor-deposited, crystalline mullite (3Al2O3·2SiO2) were subjected to a corrosive environment containing Na2SO4 and O2 at 1000°C for 100 h. The composition and microstructure of the as-deposited and corroded specimens were examined and compared. The coating appeared to be effective in preserving and therefore protecting the surface microstructure of the underlying Si3N3 substrates. However, a small degree of Na penetration through mullite grain boundaries was observed to a coating depth of ∼1 μm.

UR - https://www.scopus.com/pages/publications/0030243091

U2 - 10.1111/j.1151-2916.1996.tb09003.x

DO - 10.1111/j.1151-2916.1996.tb09003.x

M3 - Article

AN - SCOPUS:0030243091

SN - 0002-7820

VL - 79

SP - 2489

EP - 2492

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 9

ER -

Characterization of Si₃N₄ coated with chemically-vapor-deposited mullite after Na₂SO₄-induced corrosion

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