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Direct Evidence for Low‐Density Regions in Compacted Spray‐Dried Powders
Author(s) -
Saito Yutaka,
Tanaka Satoshi,
Uchida Nozomu,
Uematsu Keizo
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb01035.x
Subject(s) - materials science , compaction , ceramic , microstructure , sintering , characterization (materials science) , confocal laser scanning microscopy , spray drying , composite material , confocal , scanning electron microscope , bulk density , mineralogy , chemical engineering , nanotechnology , optics , chemistry , medicine , physics , environmental science , engineering , soil science , biomedical engineering , soil water
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.