Micro- and macroscopic design of alumina ceramics by robocasting
Micro- and macroscopic design of alumina ceramics by robocasting
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DOI：
10.1016/j.jeurceramsoc.2017.03.052
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发表时间：
2017-08-01
影响因子：
5.7
通讯作者：
Travitzky, Nahum
中科院分区：
文献类型：
--
作者：
Fu, Zongwen;Freihart, Matthias;Travitzky, Nahum
采用自动机械铸造技术和模板晶粒生长技术制备了具有拉胀、宏观胞状晶格结构和织构结构的氧化铝陶瓷。在不同温度下烧结后，在robocast陶瓷丝中观察到晶粒生长效应，其从边缘到中间在颗粒取向和孔隙率方面显示出显微结构梯度。通过计算喷嘴内剪切速率的非均匀分布，对机器人浇注过程中的颗粒取向进行了解析和数值研究。(C)2017爱思唯尔有限公司版权所有
The manufacturing of alumina ceramics with auxetic and macro-cellular lattice structure and with textured microstructure was achieved by using robocasting and TGG-technique (Templated Grain Growth). After sintering at different temperatures a grain growth effect was observed in robocast ceramic filaments, which showed a microstructural gradient in particle orientation and porosity from the edge to the middle. The particle orientation during robocasting was analytically and numerically investigated by calculating the inhomogeneous shear rate distribution in the extrusion nozzle. (C) 2017 Elsevier Ltd. All rights reserved.