期刊
MATERIALS RESEARCH EXPRESS
卷 8, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/abd665
关键词
nickle ferrite; microstructure; aluminum doping; anode materials; aluminum electrolysis
资金
- Hunan Provincial Natural Science Foundation of China [2018JJ3447]
- Outstanding Youth Project of Hunan Provincial Department of Education [16B221]
- Applied Basic Research Program of Hengyang Science and Technology Bureau [2016K153]
- High Level Introduction of Talent Research Start-up Fund of University of South China [2015XQD09]
- Innovative Experiment Program for College Students of China [201910555097]
The Al element is mainly distributed in the NiFe2O4 phase, and the doping of Al is not conducive to the densification of cermet. The morphology of the metallic phase is related to the Al adding method.
Cu-Ni-NiFe2O4-NiO cermets doped with Al (0, 0.8, 2, 3.2 wt% ) were prepared by a powder metallurgy process. The effect of Al content, Al adding method and sintering temperature on the microstructure of the cermets were studied using XRD, SEM/EDS, and DSC. The results show that NiO and NiFe2O4 phase are partly reduced to Ni by adding Al at the sintering temperature. The Al element is mainly distributed in the NiFe2O4 phase, and the doping of Al is not conducive to the densification of cermet. The density of the cermet decreases with increasing Al content. The morphology of the metallic phase is related to the Al adding method. Specimens prepared by pre-alloying of Al show smaller metallic particle size than that by mixing of Al. However, the Al adding methods have little effect on the densification and the phase composition. The sintering temperature around the solid phase line of the metallic phase is beneficial to the densification.
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