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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 63 - 67 (5page)
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초록· 키워드
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In this study, the effect of perovskite (Ca,Co)-doped LaCrO3 (LCCC) coating on a commercial ferritic stainlesssteel (SS430) as metallic interconnector in intermediate-temperature solid oxide fuel cell has been investi-gated in terms of oxidation kinetics and area specific resistance (ASR) at 800 °C in air environment. The LCCCcoating was deposited on SS430 by atmospheric plasma spraying from a spray-dried (La0.8Ca0.2)(Cr0.9Co0.1)O3powder of 10-30 um. The plasma-sprayed LCCC coating had a low porosity of ~1.0 area% and a good electri-cal conductivity of 33 S/cm at 800 °C. The protective LCCC coating significantly lowered the growth rateof thermally grown oxide scale of SS430 by inhibiting oxygen inward diffusion. The oxidation of the LCCCcoated SS430 for 1200 h led to the formation of duplex Cr2O3-LaCrO3 scale layer of ~1 um in thickness. A high conductive LaCrO3 phase in the oxide scale was formed by the chemical interactions between theCr2O3 scale and the LCCC coating. The ASR for the LCCC coated sample was limited to 9.2 mΩ·cm2after oxidation for 1200 h at 800 °C, which was much lower than ASR for the uncoated sample.
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