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- 금속질산염을 이용한 Fe-Ni 나노분말의 제조 및 특성
- 주민희, 오승탁
- Synthesis and Properties of Fe-Ni Nano-sized Powders using Metal Nitrates
- Min-Hee Joo, Sung-Tag Oh
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Journal of Korean Powder Metallurgy Institute 2009;16(3):191-195
DOI: https://doi.org/10.4150/KPMI.2009.16.3.191
1서울산업대학교 신소재공학과
2서울산업대학교 신소재공학과
1Department of Materials Science and Engineering, Seoul National University of Technology
2Department of Materials Science and Engineering, Seoul National University of Technology
2서울산업대학교 신소재공학과
1Department of Materials Science and Engineering, Seoul National University of Technology
2Department of Materials Science and Engineering, Seoul National University of Technology
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Abstract
The calcination and hydrogen-reduction behavior of Fe- and Ni-nitrate have been investigated. Fe_2O_3/NiO composite powders were prepared by chemical solution mixing of Fe- and Ni-nitrate and calcination at 350°C for 2 h. The calcined powders were hydrogen-reduced at 350°C for 30 min. The calcination and hydrogen-reduction behavior of Fe- and Ni-nitrate were analyzed by TG in air and hydrogen atmosphere, respectively. TG and XRD analysis for hydrogen-reduced powders revealed that the Fe_2O_3/NiO phase transformed to FeNi_3 phase at the temperature of 350°. The activation energy for the hydrogen reduction, evaluated by Kissinger method, was measured as 83.0 kJ/mol.
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