| Title |
Self-propagating High Temperature Synthesis of Quasi-nano sized CuxNiyZn1-x-yFe2O4 with Numerical Modeling by Finite Element Method |
| Authors |
구문선(Moon Sun Gu); 최용(Yong Choi) |
| DOI |
https://doi.org/10.3365/KJMM.2017.55.11.777 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
nano-powders; CuNiZn-ferrite; SHS method; FEM |
| Abstract |
Numerical modeling of the self-propagating high temperature synthesis (SHS) of CuxNiyZn1-x-y Fe2O4 ferrites was carried out using the finite element method, to control the combustion synthesis behaviors of the ferrites. Additional pre-heating above 300 ℃ caused the combustion temperature at the inner surface of the reactant compact to completely propagate the SHS reaction. The porous CuxNiyZn1-x-yFe2O4 ferrites formed by the SHS were ball-milled and then magnetically separated and classified to obtain quasi-nano-sized powders. The reitveld refinement estimated that the SHS product formed at room temperature was about 64% ternary ferrites, while that formed with 598 K preheating was about 85% ternary ferrites.(Received May 12, 2017; Accepted July 19, 2017) |