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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 청정에너지연구소 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제5권 제1호
- 발행연도
- 2004.3
- 수록면
- 84 - 88 (5page)
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초록· 키워드
This paper reports the preparation, microstructures and electrical properties of a Ni (55 vol%)/Sm-doped ceria cermet. Anickel powder of median size 14 μm or a NiO powder of median size 2.5 μm was mixed with Sm-doped ceria (SDC) powder(median size 0.87 μm) with a composition of Ce0.8Sm0.2O1.9, which was produced by the calcination of an oxalate solid solution(Ce0.8Sm0.2)2(C2O4)3 at 600캜. The mixtures of Ni/SDC (sample A) and NiO/SDC (sample B) were sintered at 1300 캜 in air to a relative density of 58.6% and 97.3%, respectively. During the sintering of the cermet, the Ni powder was oxidized to NiO in sample A. The NiO component in the as-sintered cermet was reduced to Ni in a H2-H2O atmosphere of an oxygen partialpressure ~10.20 atm at 700캜. Both the cermets showed a high stability of high electronic conduction to 100 h of heating at700캜 in a low oxygen partial pressure atmosphere. Sample A with large Ni particles was too brittle to handle after the heating. Sintering of the fine Ni grains in sample B proceeded at 700C
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