Oxidation behavior of bulk Ti3SiC2 at intermediate temperatures in dry air

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	Oxidation behavior of bulk Ti3SiC2 at intermediate temperatures in dry air
	H. B. Zhang; Y. C. Zhou; Y. W. Bao; J. Y. Wang
	2006
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	21 期号:2 页码:402-408
摘要	The isothermal oxidation behavior of bulk Ti3SiC2 at intermediate temperatures from 500 to 900 degrees C in flowing dry air was investigated. An anomalous oxidation with higher kinetics at lower temperatures was observed. This phenomenon resulted from the formation of microcracks in the oxide scales at low temperatures. The generation of these microcracks was caused by a phase change in the oxide products, i.e., the trans formation of anatase TiO2 to rutile TiO2. This phase trans formation resulted in tensile stress, which provided the driving force for the formation of the microcracks during oxidation. Despite the existence of microcracks, the intermediate-temperature oxidation of Ti3SiC2 generally obeyed the parabolic rate law and did not exhibit catastrophic destruction due to the fact that cracks occurring in the oxide layers were partially filled with amorphous SiO2. Therefore, further high oxidation kinetics was prevented.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, 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	Crack-healing Behavior Silicon-carbide Molybdenum Disilicide Thermal-oxidation Pest Silicides Ceramics Growth Transformation Strength
URL	查看原文
WOS记录号	WOS:000235462000012
引用统计	被引频次：40[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/321006/34691
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. B. Zhang,Y. C. Zhou,Y. W. Bao,et al. Oxidation behavior of bulk Ti3SiC2 at intermediate temperatures in dry air[J]. Journal of Materials Research,2006,21(2):402-408.
APA	H. B. Zhang,Y. C. Zhou,Y. W. Bao,&J. Y. Wang.(2006).Oxidation behavior of bulk Ti3SiC2 at intermediate temperatures in dry air.Journal of Materials Research,21(2),402-408.
MLA	H. B. Zhang,et al."Oxidation behavior of bulk Ti3SiC2 at intermediate temperatures in dry air".Journal of Materials Research 21.2(2006):402-408.