具有微孔洞结构陶瓷材料热冲击实验研究

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材料工程 ›› 2001, Vol. 0 ›› Issue (11) : 6-8.

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研究与应用

具有微孔洞结构陶瓷材料热冲击实验研究

贺鹏飞^1,2, C. Yuan³, R. Stern³, W. J. Clegg³

作者信息 +

Cracking of Porous Ceramics under Thermal Shock

HE Peng-fei^1,2, C. Yuan³, R Stern³, W. J. Clegg³

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文章历史 +

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。

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.

导出引用

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, 0(11): 6-8

HE Peng-fei, C. Yuan, R Stern, W. J. Clegg. Cracking of Porous Ceramics under Thermal Shock[J]. Journal of Materials Engineering, 2001, 0(11): 6-8

中图分类号： TB301

参考文献

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