Three-dimensional shrinkage behavior of green tapes derived from spherical-shaped powders: Experimental studies and numerical simulations
Three-dimensional shrinkage behavior of green tapes derived from spherical-shaped powders: Experimental studies and numerical simulations
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DOI：
10.1016/j.jeurceramsoc.2015.01.032
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发表时间：
2015-08-01
影响因子：
5.7
通讯作者：
Roosen, Andreas
中科院分区：
文献类型：
--
作者：
Fu, Zongwen;Polfer, Pit;Roosen, Andreas
在流延产品中，厚度方向的收缩比面内收缩更高，这是由于制造过程中剪切和干燥导致的各向异性绿色带状组织。本文对由球形颗粒组成的铸带进行了实验和数值研究。分析了粘结剂去除和在三个空间方向上不同温度下烧结后的收缩行为。讨论了各向异性收缩与孔取向和配位数等微观结构之间的关系。此外，研究还表明，粘结剂去除过程中的各向异性收缩对总收缩各向异性有很大的贡献。(C)2015爱思唯尔有限公司。保留所有权利。
In tape-cast products a higher shrinkage is observed in the thickness direction compared to the in-plane shrinkage, which is attributed to an anisotropic green tape microstructure caused by shearing and drying during manufacturing. In the present study, cast tapes composed of spherical particles were investigated experimentally and numerically. The shrinkage behavior was analyzed after binder removal and sintering at different temperatures in all three spatial directions. The correlation between anisotropic shrinkage and microstructure concerning pore orientation and coordination number was discussed. Furthermore, it is shown that the anisotropic shrinkage during binder removal contributes strongly to the total shrinkage anisotropy. (C) 2015 Elsevier Ltd. All rights reserved.