The High-Temperature Oxidation Behavior of Reaction-Bonded Porous Silicon Carbide Ceramics in Dry Oxygen

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	The High-Temperature Oxidation Behavior of Reaction-Bonded Porous Silicon Carbide Ceramics in Dry Oxygen
	C. W. Zheng; Z. M. Yang; J. S. Zhang
	2010
发表期刊	Journal of the American Ceramic Society
ISSN	0002-7820
卷号	93 期号:7 页码:2062-2067
摘要	The oxidation behavior of reaction-bonded porous silicon carbide (RPSC) ceramics in dry oxygen between 1100 degrees and 1500 degrees C was investigated based on four specimens with different porosities. RPSC ceramics exhibited a rapid mass increase in the initial stage of oxidation but a slow mass increase in the following oxidation, which was considerably different from the oxidation behavior of dense SiC. The oxidation kinetics for RPSC can be better represented by an asymptotic law rather than the parabolic law for dense SiC. We suppose that, although oxidation occurred in the entire pore channels at the beginning, the pores were rapidly blocked by the oxide as their growth rate near the pore mouth was very fast due to sufficient oxygen. As the result, the oxidation of the pore interior was stopped in the absence of further oxygen supply.
部门归属	[zheng, chuanwei; yang, zhenming; zhang, jinsong] chinese acad sci, inst met res, shenyang 110016, peoples r china.;zhang, js (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jshzhang@imr.ac.cn
关键词	Passive-oxidation Carbothermal Reduction Kinetics Fabrication Membranes Nitride
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WOS记录号	WOS:000278914500043
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31753
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. W. Zheng,Z. M. Yang,J. S. Zhang. The High-Temperature Oxidation Behavior of Reaction-Bonded Porous Silicon Carbide Ceramics in Dry Oxygen[J]. Journal of the American Ceramic Society,2010,93(7):2062-2067.
APA	C. W. Zheng,Z. M. Yang,&J. S. Zhang.(2010).The High-Temperature Oxidation Behavior of Reaction-Bonded Porous Silicon Carbide Ceramics in Dry Oxygen.Journal of the American Ceramic Society,93(7),2062-2067.
MLA	C. W. Zheng,et al."The High-Temperature Oxidation Behavior of Reaction-Bonded Porous Silicon Carbide Ceramics in Dry Oxygen".Journal of the American Ceramic Society 93.7(2010):2062-2067.