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3577421 
Journal Article 
Phase-inversion tape casting and synchrotron-radiation computed tomography analysis of porous alumina 
Fang, H; Ren, C; Liu, Y; Lu, D; Winnubst, L; Chen, C 
2013 
Yes 
Journal of the European Ceramic Society
ISSN: 0955-2219 
33 
10 
2049-2051 
WOS:000319232700053 
A variant of tape casting based on the phase inversion phenomenon was adopted for fabrication of porous ceramic wafer. A slurry was prepared by dispersing alumina powder in an N-methyl-2-pyrrolidone (NMP) solution of the polymers polyethersulfone (PES) and polyvinylpyrrolidone (PVP). The slurry was cast using a doctor blade, and immersed in water to solidify the polymer solution via phase inversion. The green tape was dried and sintered at 1500 degrees C. The as-prepared ceramic wafer was characterized using synchrotron-radiation computed tomography (SR-CT). It was revealed that the ceramic wafer contained typical finger-like macrovoids, and the porosity resulting from these macrovoids was similar to 30%. The overall porosity of the wafer was 59%, as derived from the density data measured by Archimedes method in mercury. It is concluded that the phase inversion tape casting is a simple and effective method for preparation of porous ceramics. (C) 2013 Elsevier Ltd. All rights reserved. 
Tape casting; Phase inversion; Porous ceramics; Synchrotron-radiation computed tomography; Alumina