STRENGTH AND TOUGHNESS OF ZRO2-BASED CERAMICS AT CRYOGENIC TEMPERATURES

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	STRENGTH AND TOUGHNESS OF ZRO2-BASED CERAMICS AT CRYOGENIC TEMPERATURES
	L. F. Li; Z. Zhang; L. Z. Zhao; Z. H. Tu; Y. Y. Li
	1994
发表期刊	Cryogenics
ISSN	0011-2275
卷号	34 页码:469-472
摘要	We measured the fracture strength and fracture toughness of ZrO2-based ceramics containing 14.5mol%, 15.5mol%, and 16.5mol% CeO2 at 298, 77, and 4.2K. The results indicate that there is 56-117% increase in fracture toughness at 4.2K and 47.6-92% increase in fracture strength at 4.2K. The maximum increases in fracture toughness and fracture strength from 298K to 4.2K are respect to the compositions of 16.5mol% CeO2-ZrO2 and 14.5mol% CeO2-ZrO2. The enhancement of both parameters is due to the stress-induced tetragonal to monoclinic phase transformation. The transformation reduces the stress intensity at the crack tip so as to resist crack extension. SEM analysis exhibits the differences of micrographs at various temperatures.
部门归属	chinese acad sci,inst met res,shenyang 110015,peoples r china.;li, lf (reprint author), chinese acad sci,cryogen lab,pob 2711,beijing 100080,peoples r china
关键词	Partially-stabilized Zirconia Phase-transformation Composites Zro2
URL	查看原文
WOS记录号	WOS:A1994PY67800110
引用统计	被引频次：15[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/321006/38837
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. F. Li,Z. Zhang,L. Z. Zhao,et al. STRENGTH AND TOUGHNESS OF ZRO2-BASED CERAMICS AT CRYOGENIC TEMPERATURES[J]. Cryogenics,1994,34:469-472.
APA	L. F. Li,Z. Zhang,L. Z. Zhao,Z. H. Tu,&Y. Y. Li.(1994).STRENGTH AND TOUGHNESS OF ZRO2-BASED CERAMICS AT CRYOGENIC TEMPERATURES.Cryogenics,34,469-472.
MLA	L. F. Li,et al."STRENGTH AND TOUGHNESS OF ZRO2-BASED CERAMICS AT CRYOGENIC TEMPERATURES".Cryogenics 34(1994):469-472.