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Effect of porosity on the crack pattern and residual strength of ceramics after quenching
Shao YF(邵颖峰); Du RQ(杜睿琪); Wu XF; Song F(宋凡); Xu XH(许向红); Jiang CP; Shao, YF (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
Source PublicationJOURNAL OF MATERIALS SCIENCE
2013-09-01
Volume48Issue:18Pages:6431-6436
ISSN0022-2461
AbstractThe effect of porosity on the crack characteristics of ceramics after water-quenching is studied by measuring the cracks in ceramic sheets. The result reveals that the pore volume fraction has a slight effect on the enhancement of thermal shock resistance of ceramics when the porosity ranges from 0 to 20 %, because the length and density of the long crack in porous alumina are always slightly less than that in dense alumina. This result is in agreement with the prediction based on the minimum potential energy principle using experimentally measured data. Moreover, the proportion of the strength reduction in the third regime decreases significantly with increasing porosity, because the strength of unquenched specimens decreases more rapidly than that of quenched specimens with increasing porosity. The results of this study may help to further understand the thermal shock behavior of ceramics.
KeywordAlumina Cracks Porosity Quenching Thermal Shock Minimum Potential Energy Principle Pore Volume Fractions Porous Alumina Prediction-based Residual Strength Strength Reduction Thermal Shock Resistance Water-quenching
Subject Area极端条件下的材料和结构
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000321285500038
Funding OrganizationNational Natural Science Foundation of China [11102208, 91216110, 91016029, 11021262, 11061130550, 11023001]
DepartmentLNM生物材料微结构和力学性能
Classification二类/Q1
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47406
Collection非线性力学国家重点实验室
Corresponding AuthorShao, YF (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Shao YF,Du RQ,Wu XF,et al. Effect of porosity on the crack pattern and residual strength of ceramics after quenching[J]. JOURNAL OF MATERIALS SCIENCE,2013,48(18):6431-6436
APA 邵颖峰.,杜睿琪.,Wu XF.,宋凡.,许向红.,...&Shao, YF .(2013).Effect of porosity on the crack pattern and residual strength of ceramics after quenching.JOURNAL OF MATERIALS SCIENCE,48(18),6431-6436.
MLA 邵颖峰,et al."Effect of porosity on the crack pattern and residual strength of ceramics after quenching".JOURNAL OF MATERIALS SCIENCE 48.18(2013):6431-6436.
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