TY - JOUR
T1 - Extrusion method using nylon 66 fibers for the preparation of porous alumina ceramics with oriented pores
AU - Isobe, Toshihiro
AU - Kameshima, Yoshikazu
AU - Nakajima, Akira
AU - Okada, Kiyoshi
AU - Hotta, Yuji
PY - 2006/4/27
Y1 - 2006/4/27
N2 - Porous alumina ceramics with unidirectionally oriented pores were prepared using an extrusion method. The paste for extrusion was prepared by mixing alumina and nylon 66 fibers with binder and dispersant. The resulting paste was extruded, dried at room temperature, and after removal of the binder at 600 °C, fired at 1500 °C for 2 h. The pore size in the sintered body, determined from SEM micrographs, was 16 μm, corresponding to the size of the burnt-out nylon 66 fibers. The degree of orientation of the cylindrical pores was evaluated from SEM micrographs to be highly aligned to the extrusion direction. The orientation of the pores decreased with increasing fiber loading because of strong interaction between the fibers. The pore size distribution of the extruded samples showed a peak at 16 μm corresponding to the cylindrical pore diameter and also at 4 and 6 μm corresponding to the pores formed by connection of the fibers.
AB - Porous alumina ceramics with unidirectionally oriented pores were prepared using an extrusion method. The paste for extrusion was prepared by mixing alumina and nylon 66 fibers with binder and dispersant. The resulting paste was extruded, dried at room temperature, and after removal of the binder at 600 °C, fired at 1500 °C for 2 h. The pore size in the sintered body, determined from SEM micrographs, was 16 μm, corresponding to the size of the burnt-out nylon 66 fibers. The degree of orientation of the cylindrical pores was evaluated from SEM micrographs to be highly aligned to the extrusion direction. The orientation of the pores decreased with increasing fiber loading because of strong interaction between the fibers. The pore size distribution of the extruded samples showed a peak at 16 μm corresponding to the cylindrical pore diameter and also at 4 and 6 μm corresponding to the pores formed by connection of the fibers.
KW - AlO
KW - Extrusion
KW - Fibers
KW - Membranes
KW - Porous ceramics
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U2 - 10.1016/j.jeurceramsoc.2005.04.014
DO - 10.1016/j.jeurceramsoc.2005.04.014
M3 - Article
AN - SCOPUS:33645915785
VL - 26
SP - 2213
EP - 2217
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 12
ER -