Direct Evidence for Low‐Density Regions in Compacted Spray‐Dried Powders
Direct Evidence for Low‐Density Regions in Compacted Spray‐Dried Powders
复制标题
压实喷雾干燥粉末中低密度区域的直接证据
DOI：
10.1111/j.1151-2916.2001.tb01035.x
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发表时间：
2004
影响因子：
3.9
通讯作者：
K. Uematsu
中科院分区：
文献类型：
--
作者：
Yutaka Saito;S. Tanaka;N. Uchida;K. Uematsu
采用一种新型的表征工具直接观察陶瓷绿色坯体的孔结构，以研究粘结剂对粉末压制工艺陶瓷微观结构的不利影响。去除粘结剂后，粘结剂在颗粒表面偏聚，并在压坯中颗粒边界处形成低密度区。在烧结过程中，从低密度区开始，形成了一个圆形的孔隙网络。本文还介绍了一种新的表征技术，共聚焦激光扫描荧光显微镜。
Pore structure in a ceramic green body was directly observed with a novel characterization tool to examine the detrimental effect of a binder on the microstructure of ceramics for powder compaction processing. The binder segregated on the surface of granules and formed a low-density region at the boundaries of granules in the compact after binder removal. A network of pores with round shapes was produced in the sintering process from the low-density region. This paper also explains a new characterization technique, confocal laser scanning fluorescent microscopy.