Polymer-derived SiAlCN ceramics resist oxidation at 1400 °C

被引：121
作者：
Wang, Yiguang
Fan, Yi
Zhang, Ligong
Zhang, Wenge
An, Linan
机构：
[1] Univ Cent Florida, Adv Mat Proc & Anal Ctr, Orlando, FL 32816 USA
[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Lab Excited State Proc, Changchun 130032, Peoples R China
[3] Sporian Microsyst Technol Inc, Boulder, CO 80026 USA
来源：
SCRIPTA MATERIALIA | 2006年 / 55卷 / 04期
关键词：
SiAlCN; oxidation; precursor;
D O I：
10.1016/j.scriptamat.2006.05.004
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
引用
收藏
页码：295 / 297
页数：3
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