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Korean Journal of Metals and Materials > Volume 55(11); 2017 > Article
Korean Journal of Metals and Materials 2017;55(11): 777-782. doi: https://doi.org/10.3365/KJMM.2017.55.11.777
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
Correspondence  Yong Choi ,Tel: +82-41-550-3537, Email: yochoi@dankook.ac.kr
Received: 12 May 2017;  Accepted: 19 July 2017.  Published online: 31 October 2017.
ABSTRACT
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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