| 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.
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| Source Publication | JOURNAL OF MATERIALS SCIENCE
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| 2013-09-01 | |
| Volume | 48Issue:18Pages:6431-6436 |
| ISSN | 0022-2461 |
| Abstract | The 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. |
| Keyword | Alumina 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 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000321285500038 |
| Funding Organization | National Natural Science Foundation of China [11102208, 91216110, 91016029, 11021262, 11061130550, 11023001] |
| Department | LNM生物材料微结构和力学性能 |
| Classification | 二类/Q1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47406 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Shao, 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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