- Microstructure and Mechanical Properties of Al2O3/Fe-Ni Nanocomposite Prepared by Rapid Sintering
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Young-In Lee, Kun-Jae Lee, Dae-Hwan Jang, Jae-Kyo Yang, Yong-Ho Cho
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J Korean Powder Metall Inst. 2010;17(3):203-208.
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DOI: https://doi.org/10.4150/KPMI.2010.17.3.203
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 Abstract
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- A new High Frequency Induction Heating (HFIH) process has been developed to fabricate dense Al_2O_3 reinforced with Fe-Ni magnetic metal dispersion particles. The process is based on the reduction of metal oxide particles immediately prior to sintering. The synthesized Al_2O_3/Fe-Ni nanocomposite powders were formed directly from the selective reduction of metal oxide powders, such as NiO and Fe_2O_3. Dense Al_2O_3/Fe-Ni nanocomposite was fabricated using the HFIH method with an extremely high heating rate of 2000°C/min. Phase identification and microstructure of nanocomposite powders and sintered specimens were determined by X-ray diffraction and SEM and TEM, respectively. Vickers hardness experiment were performed to investigate the mechanical properties of the Al_2O_3/Fe-Ni nanocomposite.
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