Microstructural and mechanical properties of Ni-YSZ fabricated using SPS processing have been investigated at various sintering temperatures. Our study shows samples to be applied as a SOFC anode have the proper porosity of 40% and high hardness when processed at 1100ºC. These results are comparable to the values obtained at 100- 200ºC higher sintering temperature reported by others. This result is important because when the fabrication processes are performed above 1100ºC, the mechanical property starts to decrease drastically. This is caused by the fast grain coarsening at the higher temperature, which initiates a mismatch between thermal expansion coefficients of Ni and YSZ and induces cracks as well.

• 김혜성(부산대학교 나노융합기술학과) | Hye Sung Kim Corresponding Author
• 김가람(부산대학교 나노융합기술학과) | Ka Ram Kim
• 송병주(부산대학교 나노융합기술학과) | Byung Ju Song