|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Processing of Nanostructured Powders and Nanopowders by Consolidation
||Synthesis of Quasi-Nano-sized Ni-Zn-X-Ferrites (Gd, Cu, Mg) by Using Combustion Synthesis and Improvement of Purity by Wet Process
||Man Kim, Yong Choi, Moon Sun Gu, Youl Baik, Bo Kyeong Kang, Sang Sun Han, Sun I. Hong, Chung T. Kim
|On-Site Speaker (Planned)
Nano-sized Cu-Ni-Zn ferrites were synthesized with initial powders of CuO, NiO, ZnO, Fe and Fe<sub> 2</sub>O <sub> 3</sub> powders by combustion synthesis, so called, self-propagating high temperature synthesis (SHS). The porous SHS skeleton was high speed ball-milled followed by magnetically separated in a wet condition to improve purity. Phase identification by X-ray and neutron diffractometries showed that spinel peak was well observed. By the magnetic separation, the purity determined by Rietveld refinement of the X-ray spectra tended to be increased. The ferrite particle size after ball milling was less than sub-micron. Finally, the quasi-nano-sized particles were classified in a fluidized bed type furnace with an ultrasonic agitation unit to get nano-sized particles. The nano-sized particles were less than 100 nm. Magnetic properties of the ferrite powders determined by VSM will be presented.
||Planned: A print-only volume