| 具有微孔洞结构陶瓷材料热冲击实验研究 |
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| 引用本文： | 贺鹏飞,C.Yuan,R.Stern,W.J.Clegg.具有微孔洞结构陶瓷材料热冲击实验研究[J].材料工程,2001(11):6-8. |
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| 作者姓名： | 贺鹏飞 C.Yuan R.Stern W.J.Clegg |
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| 作者单位： | 1. 上海交通大学;同济大学理学院
2. Department of Materials Science and Metallurgy,University of Cambridge, Pembroke Street, |
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| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金，教育部访问学者基金，19972048，，，，， |
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| 摘 要： | 对微孔洞体积含量分别为5％（密实材料），10％，20％和30％（微孔洞结构材料）的四种氧化铝陶瓷材料通过水冷却的实验法进行了热冲击实验。实验结果表明无论从裂纹的起始模式，还是裂纹扩展程度，都表明具有微孔洞结构的陶瓷材料比其对应的密实材料有着较好的抗热冲击性能。
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| 关 键 词： | 微孔洞结构陶瓷 热冲击 裂纹模式 水冷却 氧化铝陶瓷 抗热冲击性能 |
| 文章编号： | 1001-4381(2001)11-0006-03 |
| 修稿时间： | 2000年12月6日 |
Cracking of Porous Ceramics under Thermal Shock |
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| HE Peng fei ,C Yuan ,R Stern ,W J Clegg.Cracking of Porous Ceramics under Thermal Shock[J].Journal of Materials Engineering,2001(11):6-8. |
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| Authors: | HE Peng fei C Yuan R Stern W J Clegg |
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| Affiliation: | HE Peng fei 1,2,C Yuan 3,R Stern 3,W J Clegg 3 |
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| Abstract: | Cracking of porous ceramics under thermal shock has been investigated by water quenching experimental method The materials used in this study were dense and porous alumina Slip casting slurries of alumina dispersed in water using an ammonium polyacrylate dispersing agent have produced samples The experimental observations show that the porosity modifies the way in which cracking initiation, giving only multiply penetrating cracks for porous materials rather spalling and penetrating cracks for dense materials In addition, under same thermal shock condition, crack density for the porous materials is larger than that for the dense materials, but crack length for the porous materials is shorter than that for the dense materials |
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| Keywords: | prous ceramics thermal shock crack pattern |
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