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
刊名	Cryogenics
	1994
卷号	34 页码:469-472
关键词	partially-stabilized zirconia phase-transformation composites zro2
ISSN号	0011-2275
中文摘要	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.
原文出处	://WOS:A1994PY67800110
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/38837]
专题	金属研究所_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.