In this section
@article{Ferraro:2017:10.1016/j.jeurceramsoc.2017.09.048,
author = {Ferraro, C and Garcia-Tunon, E and Barg, S and Miranda, M and Ni, N and Bell, R and Saiz, E},
doi = {10.1016/j.jeurceramsoc.2017.09.048},
journal = {Journal of the European Ceramic Society},
pages = {823--835},
title = {SiC porous structures obtained with innovative shaping technologies},
url = {http://dx.doi.org/10.1016/j.jeurceramsoc.2017.09.048},
volume = {38},
year = {2017}
}
TY - JOUR
AB - SiC structures with porosities ranging between 20–60% have been fabricated using two methods emulsification and freeze casting. While emulsification results in foam-like isotropic materials with interconnected pores, freeze casting can be used to fabricate highly anisotropic materials with characteristic layered architectures. The parameters that control the pore size and final porosity have been identified (solid content in the initial suspensions, emulsification times or speed of the freezing front). We have found that liquid state sintering (suing Al2O3 and Y2O3 as additives) at 1800 °C on a powder (SiC/Al2O3) bed provides optimum consolidation for the porous structures. The mechanical strength of the materials depends on their density. Freeze casted materials fabricated with bimodal particle size distributions (a controlled mixture of micro and nanoparticles) exhibit higher compressive strengths that can reach values of up to 280 MPa for materials with densities of 0.47.
AU - Ferraro,C
AU - Garcia-Tunon,E
AU - Barg,S
AU - Miranda,M
AU - Ni,N
AU - Bell,R
AU - Saiz,E
DO - 10.1016/j.jeurceramsoc.2017.09.048
EP - 835
PY - 2017///
SN - 0955-2219
SP - 823
TI - SiC porous structures obtained with innovative shaping technologies
T2 - Journal of the European Ceramic Society
UR - http://dx.doi.org/10.1016/j.jeurceramsoc.2017.09.048
UR - http://hdl.handle.net/10044/1/56246
VL - 38
ER -