Oxidation Behavior of Ternary Carbide Ceramics in Hf-Al-C System in Air

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	Oxidation Behavior of Ternary Carbide Ceramics in Hf-Al-C System in Air
	L. F. He; J. J. Li; H. Q. Nian; X. H. Wang; Y. W. Bao; M. S. Li; J. Y. Wang; Y. C. Zhou
	2010
发表期刊	Journal of the American Ceramic Society
ISSN	0002-7820
卷号	93 期号:10 页码:3427-3431
摘要	The oxidation behavior of Hf-Al-C ceramics containing 37.5 wt% Hf(3)Al(3)C(5), 30.5 wt% Hf(2)Al(4)C(5), and 32.0 wt% Hf(3)Al(4)C(6) has been investigated at 900 degrees-1300 degrees C in air. The oxidation kinetics approximately follows a linear law with the activation energy of 194 +/- 12 kJ/mol. The oxidation resistance of Hf-Al-C ceramics at high temperature is superior to HfC. The oxide scale is porous and composed of well-mixed t-HfO(2) and Al(2)O(3) as well as residual free carbon. The stabilization mechanisms of t-HfO(2) and free carbon have been discussed. The simultaneous oxidation of Hf and Al in Hf-Al-C ceramics can be attributed to their close oxygen affinity as well as the strong coupling between Hf-C blocks and Al-C units in the crystal structures.
部门归属	[he, ling-feng; li, jing-jing; nian, hong-qiang; wang, xiao-hui; bao, yi-wang; li, mei-shuan; wang, jing-yang; zhou, yan-chun] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [he, ling-feng; li, jing-jing; nian, hong-qiang] chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, yc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;yczhou@imr.ac.cn
关键词	Hafnium Carbide Phase-transformation Elastic Properties High-temperatures Zirconia Carbon Gamma-al2o3 Nucleation Zr2al3c4 Zro2
URL	查看原文
WOS记录号	WOS:000282637200097
引用统计	被引频次：10[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/321006/31143
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. F. He,J. J. Li,H. Q. Nian,et al. Oxidation Behavior of Ternary Carbide Ceramics in Hf-Al-C System in Air[J]. Journal of the American Ceramic Society,2010,93(10):3427-3431.
APA	L. F. He.,J. J. Li.,H. Q. Nian.,X. H. Wang.,Y. W. Bao.,...&Y. C. Zhou.(2010).Oxidation Behavior of Ternary Carbide Ceramics in Hf-Al-C System in Air.Journal of the American Ceramic Society,93(10),3427-3431.
MLA	L. F. He,et al."Oxidation Behavior of Ternary Carbide Ceramics in Hf-Al-C System in Air".Journal of the American Ceramic Society 93.10(2010):3427-3431.