Oxidation of polymer-derived SiAlCN ceramics

Yiguang Wang; Linan An; Yi Fan; Ligong Zhang; Sarah Burton; Zhehong Gan

doi:10.1111/j.1551-2916.2005.00542.x

Oxidation of polymer-derived SiAlCN ceramics

Yiguang Wang, Linan An^*, Yi Fan, Ligong Zhang, Sarah Burton, Zhehong Gan

^*Corresponding author for this work

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

82 Citations (Scopus)

Abstract

The oxidation behavior of polymer-derived amorphous SiAlCNs was studied in the temperature range of 900°-1200°C. The results revealed that while at 900°C the oxidation of the SiAlCNs follows typical parabolic kinetics, at higher temperatures the oxidation rates of the materials decrease with annealing time. Long-term oxidation rate of the SiAlCNs is much lower than the lowest values reported for chemical vapor deposition of SiC and Si3N4. Structures of the oxide scales were studied using solid-state nuclear magnetic resonance. We proposed that oxide scales formed for the SiAlCNs possess a unique network structure of the oxide scale in which aluminum atoms block the path of oxygen diffusion, thus lowering the oxidation rates. Such a unique structure was likely formed gradually with annealing time, leading to a continuous decrease in oxidation rate.

Original language	English
Pages (from-to)	3075-3080
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	88
Issue number	11
DOIs	https://doi.org/10.1111/j.1551-2916.2005.00542.x
Publication status	Published - Nov 2005
Externally published	Yes

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10.1111/j.1551-2916.2005.00542.x

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title = "Oxidation of polymer-derived SiAlCN ceramics",

abstract = "The oxidation behavior of polymer-derived amorphous SiAlCNs was studied in the temperature range of 900°-1200°C. The results revealed that while at 900°C the oxidation of the SiAlCNs follows typical parabolic kinetics, at higher temperatures the oxidation rates of the materials decrease with annealing time. Long-term oxidation rate of the SiAlCNs is much lower than the lowest values reported for chemical vapor deposition of SiC and Si3N4. Structures of the oxide scales were studied using solid-state nuclear magnetic resonance. We proposed that oxide scales formed for the SiAlCNs possess a unique network structure of the oxide scale in which aluminum atoms block the path of oxygen diffusion, thus lowering the oxidation rates. Such a unique structure was likely formed gradually with annealing time, leading to a continuous decrease in oxidation rate.",

author = "Yiguang Wang and Linan An and Yi Fan and Ligong Zhang and Sarah Burton and Zhehong Gan",

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T1 - Oxidation of polymer-derived SiAlCN ceramics

AU - Wang, Yiguang

AU - An, Linan

AU - Fan, Yi

AU - Zhang, Ligong

AU - Burton, Sarah

AU - Gan, Zhehong

PY - 2005/11

Y1 - 2005/11

N2 - The oxidation behavior of polymer-derived amorphous SiAlCNs was studied in the temperature range of 900°-1200°C. The results revealed that while at 900°C the oxidation of the SiAlCNs follows typical parabolic kinetics, at higher temperatures the oxidation rates of the materials decrease with annealing time. Long-term oxidation rate of the SiAlCNs is much lower than the lowest values reported for chemical vapor deposition of SiC and Si3N4. Structures of the oxide scales were studied using solid-state nuclear magnetic resonance. We proposed that oxide scales formed for the SiAlCNs possess a unique network structure of the oxide scale in which aluminum atoms block the path of oxygen diffusion, thus lowering the oxidation rates. Such a unique structure was likely formed gradually with annealing time, leading to a continuous decrease in oxidation rate.

AB - The oxidation behavior of polymer-derived amorphous SiAlCNs was studied in the temperature range of 900°-1200°C. The results revealed that while at 900°C the oxidation of the SiAlCNs follows typical parabolic kinetics, at higher temperatures the oxidation rates of the materials decrease with annealing time. Long-term oxidation rate of the SiAlCNs is much lower than the lowest values reported for chemical vapor deposition of SiC and Si3N4. Structures of the oxide scales were studied using solid-state nuclear magnetic resonance. We proposed that oxide scales formed for the SiAlCNs possess a unique network structure of the oxide scale in which aluminum atoms block the path of oxygen diffusion, thus lowering the oxidation rates. Such a unique structure was likely formed gradually with annealing time, leading to a continuous decrease in oxidation rate.

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 11

ER -

Oxidation of polymer-derived SiAlCN ceramics

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