Freeze cast fabrication of porous ceramics using tert-butyl alcohol-water crystals as template

被引：47
|
作者：
Tang, Yufei [1 ]
Qiu, Sha [1 ]
Wu, Cong [1 ]
Miao, Qian [1 ]
Zhao, Kang [1 ]
机构：
[1] Xian Univ Technol, Dept Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2016年 / 36卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Freeze casting; Porous ceramic; Tert-butyl alcohol-water crystals; Mechanical property; MICROSTRUCTURE; MONOLITHS;
D O I：
10.1016/j.jeurceramsoc.2015.12.047
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Tert-butyl alcohol (TBA)-water (H2O) crystals are used as template to fabricate aligned porous alumina with special pore structures. Alumina slurries were prepared using TBA-H2O mixtures, which could undergo continuous crystallization by unidirectional freezing. The pore shape of porous alumina constantly changed from lamellar to snowflake, dendritic, needle-like, and hexagonal with the increase in the TBA content in alumina slurries. The hexagonal porous structure obtained by pure TBA slurry exhibited the best mechanical properties, whereas the mixture structure with irregular pore walls showed the worst, exhibiting inferior properties to lamellar pore structures. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1513 / 1518
页数：6
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