Title

Polymer-derived SiAlCN ceramics resist oxidation at 1400 degrees C

Authors

Authors

Y. G. Wang; Y. Fan; L. G. Zhang; W. G. Zhang;L. A. An

Comments

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Abbreviated Journal Title

Scr. Mater.

Keywords

SiAlCN; oxidation; precursor; AMORPHOUS-SILICON CARBONITRIDE; C-N CERAMICS; HIGH-TEMPERATURE; PRECURSOR; KINETICS; VISCOSITY; PYROLYSIS; CORROSION; BEHAVIOR; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering

Abstract

The oxidation kinetics of polymer-derived SiAlCN ceramics are determined at 1400 degrees C by measuring oxide-scale thickness as a function of oxidation time. The results reveal that the SiAlCN ceramics possess much better oxidation resistance than polymer-derived SiCN without Al, pure SiC and Si3N4. X-ray diffraction studies reveal that the oxide scales consist of cristobalite, plus a small amount of mullite for the sample with high aluminum-content. The reason that the SiAlCNs exhibited better oxidation resistance is discussed. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Journal Title

Scripta Materialia

Volume

55

Issue/Number

4

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

295

Last Page

297

WOS Identifier

WOS:000238815800004

ISSN

1359-6462

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