| 유한요소법에 의한 수학적 모델링을 활용한 준-나노 CuxNiyZn1-x-yFe2O4 페라이트 연소합성 |
| 구문선, 최용 |
| 단국대학교 신소재공학과 |
| Self-propagating High Temperature Synthesis of Quasi-nano sized CuxNiyZn1-x-yFe2O4 with Numerical Modeling by Finite Element Method |
| Moon Sun Gu, Yong Choi |
| Department of Materials Science and Engineering, Dankook University, Cheonan 31116, Republic of Korea |
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Received: 12 May 2017; Accepted: 19 July 2017. Published online: 31 October 2017. |
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| ABSTRACT |
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Numerical modeling of the self-propagating high temperature synthesis (SHS) of CuxNiyZn1-x-yFe2O4 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. |
| Keywords:
nano-powders, CuNiZn-ferrite, SHS method, FEM |
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