| 학회 |
한국재료학회 |
| 학술대회 |
2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 |
26권 1호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Effect of manganese concentration in lanthanum oxide dispersed ferritic stainless steels (SUS441) on oxidation behavior for solid oxide fuel cell metallic interconnect material |
| 초록 |
In this study, we have investigated the effect of manganese (Mn) concentration in lanthanum oxide (La2O3) dispersed ferritic stainless steels (SUS441) on oxidation behavior for solid oxide fuel cell (SOFC) metallic interconnect material. The manganese metal powder (0 ~ 2wt.%) was mixed with La2O3 (3wt.%) dispersed SUS441 by high-energy ball milling (HEBM) process. The mixed powders with various Mn concentration were pelletized and sintered at 1400℃ in reduction condition. The area specific resistance (ASR) test was evaluated at 800℃ in electrical furnace. The material characterization and morphology analysis were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). After oxidation, the oxide scale formed on the surface of the sample was conformed as a Mn-Cr spinel structure. As the Mn concentration of the mixed powder increased, the thickness of the oxide scales formed became thicker. Among the various mixed composition, the sample with 1wt.% Mn added had the lowest area specific resistance value. The results show that Mn concentration in SUS441 is an important point affecting the oxidation behavior. |
| 저자 |
김태훈1, Amjad Hussain2, 조동우1, 이승복2, 임탁형2, 홍종은2, 송락현1
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| 소속 |
1한국과학기술연합대, 2한국에너지기술(연) |
| 키워드 |
solid oxide fuel cell; metal-interconnect; manganese(Mn); lanthanum oxide(La<SUB>2</SUB>O<SUB>3</SUB>) high energy ball milling; area specific resistance
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| E-Mail |
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