- Synthesis and Properties of Fe-Ni Nano-sized Powders using Metal Nitrates
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Min-Hee Joo, Sung-Tag Oh
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J Korean Powder Metall Inst. 2009;16(3):191-195.
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DOI: https://doi.org/10.4150/KPMI.2009.16.3.191
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 Abstract
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- 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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