Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Sintering Temperature on the Microstructure and Mechanical Properties of Solid Oxide Fuel Cell Anode Fabricated by Spark Plasma Sintering

플라즈마 소결법을 이용한 고체산화물 연료전지 음극 제조 시 소결온도에 따른 미세구조 및 물성평가

  • Song, Byung Ju (Department of Nano Fusion Technology, College of Nanoscience & Nanotechnology, Pusan National University) ;
  • Kim, Ka Ram (Department of Nano Fusion Technology, College of Nanoscience & Nanotechnology, Pusan National University) ;
  • Kim, Hye Sung (Department of Nano Fusion Technology, College of Nanoscience & Nanotechnology, Pusan National University)
  • 송병주 (부산대학교 나노융합기술학과) ;
  • 김가람 (부산대학교 나노융합기술학과) ;
  • 김혜성 (부산대학교 나노융합기술학과)
  • Received : 2013.10.28
  • Accepted : 2013.12.17
  • Published : 2013.12.28
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Abstract

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 $1100^{\circ}C$. These results are comparable to the values obtained at $100-200^{\circ}C$ higher sintering temperature reported by others. This result is important because when the fabrication processes are performed above $1100^{\circ}C$, 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.

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