Preparation of Al18B4O33 ceramic skeletons with hierarchical pore structures by extrusion-based additive manufacturing

被引：0
作者：
Lao, Dong [1 ]
Zhang, Yan [2 ]
Li, Haitao [1 ]
Wang, Bo [1 ]
Wu, Yunlong [1 ]
Jia, Wenbao [1 ,3 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut NUAA, Dept Nucl Sci & Technol, Nanjing 211106, Peoples R China
[2] East China Univ Technol, Fundamental Sci Radioact Geol & Explorat Technol L, Nanchang 330013, Peoples R China
[3] Jiangsu Higher Educ Inst, Collaborat Innovat Ctr Radiat Med, Suzhou 215006, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2025年 / 51卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Hierarchical pore structures; Al(OH)3; Direct ink writing; ALUMINUM BORATE FOAMS; SIZE;
D O I：
10.1016/j.ceramint.2024.12.184
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：
This study presents a novel method for manufacturing Al18B4O33 ceramic skeletons with hierarchical pore structures by combining extrusion-based additive manufacturing (direct ink writing method) with in situ synthesis of whiskers and/or in situ decomposition technology. The results show that single-phase Al18B4O33 ceramic skeletons were obtained, which formed numerous needle-like whiskers. Increasing the Al(OH)3 content of the slurries gradually decreases the density, fracture work, and strength of the skeleton, whereas the apparent porosity progressively increases. The whisker aspect ratio, specific surface area, and photocatalytic activity showed an initial increase, followed by a decrease with increasing Al(OH)3 content. However, the median pore size of the skeleton exhibits the opposite trend. Coating a TiO2 layer onto the skeleton prepared with 1.0 mol of Al(OH)3 resulted in a 79.08 % degradation rate of the methyl orange solution, indicating the great potential of the skeleton for catalyst support applications.
引用
收藏
页码：7485 / 7494
页数：10
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