This current study reports preparation of Nickel-Gadolinium doped Ceria (Ni-GDC) composite via controlled unidirectional freeze casting of aqueous-based GDC slurry completed with nickel infiltrated into the porous GDC samples. Gadolinium doped ceria powder prepared by gel-combustion synthesis method. The oxide powder was confirmed to be the fluorite-structured of Ce0.8Gd0.2O1.9 solid solution by X-ray diffraction. The synthesized powder with dolapix as a dispersant, ammoniac as an agent pH, poly vinyl alcohol (PVA) as a binder and water as a solvent were used to prepare stable GDC slurries. Freeze casting process was done in different solid loading of GDC at 35, 45 and 44 wt. %, and two different rates of 1 and 3 ̊C/min to obtain desirable pore structure. After removing the frozen ice at -58 ̊C the green samples were sintered for 2 h in air at 1300 °C. The pore structure and final microstructure were studied by scanning electron microscopy. The porosity of the sintered samples was in a range of 60-70% , and were depended on solid content and freeze casting rate. Finally nickel solution was infiltrated into hierarchically porous GDC samples, after reduction at 800 ̊C, Ni-GDC composite was attained.
Khakpour Z., Mousavi A., Niazmand M., Alizadeh M., Zamanian A. (2017). 'Preparation of aliened porous Ni-GDC nano composite by freeze-casting process', Advanced Ceramics Progress, 3(1), pp. 10-15. doi: 10.30501/acp.2017.70039
CHICAGO
Z. Khakpour, A. Mousavi, M. Niazmand, M. Alizadeh and A. Zamanian, "Preparation of aliened porous Ni-GDC nano composite by freeze-casting process," Advanced Ceramics Progress, 3 1 (2017): 10-15, doi: 10.30501/acp.2017.70039
VANCOUVER
Khakpour Z., Mousavi A., Niazmand M., Alizadeh M., Zamanian A. Preparation of aliened porous Ni-GDC nano composite by freeze-casting process. ACERP, 2017; 3(1): 10-15. doi: 10.30501/acp.2017.70039