κΉμλ
2016-05-24T02:50:59Z
2016-05-24T02:50:59Z
2015-01
MATERIALS LETTERS, v. 139, Page. 268-270
0167-577X
http://hdl.handle.net/20.500.11754/21285
http://www.sciencedirect.com/science/article/pii/S0167577X14018977
The present study demonstrates how the composition of sublimable vehicle in the binary system affects the pore structure of porous body fabricated by freeze drying process. The 5 vol% MoO3 dispersed slurries with various camphor-naphthalene compositions (eutectic of 35 wt% naphthalene, off-eutectic of 30 and 45 wt% naphthalene) was frozen into a mold at 25 degrees C. Pores were generated by sublimation of the vehicles at room temperature. The green bodies were sintered at 1100 degrees C under a hydrogen atmosphere. The sintered bodies with pure Mo phase showed different pore structures such as dendrite, rodlike and plate shape dependent on the composition of the camphor-naphthalene alloys. Considering that the observed pore structures were a replica of the original structure of crystallized vehicles, morphology developments during solidification of camphor-naphthalene alloys were examined, and the relationship between the morphology of vehicle crystal and pore structure was discussed. (C) 2014 Elsevier B.V. All rights reserved.
en
ELSEVIER SCIENCE BV
Pore structure
Porous Mo
Camphor-naphthalenesystem
Freezedrying
Freeze drying for porous Mo with different sublimable vehicle compositions in the camphor-naphthalene system
Article
139
10.1016/j.matlet.2014.10.097
268-270
MATERIALS LETTERS
Oh, Sung-Tag
Kim, Young Do
Suk, Myung-Jin
2015002890
S
COLLEGE OF ENGINEERING[S]
DIVISION OF MATERIALS SCIENCE & ENGINEERING
ydkim1