Preparation of High Permeability Mn-Zn Ferrites by the Wet Method

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J. Korean Ceram. Soc. > Volume 31(1); 1994 > Article

Journal of the Korean Ceramic Society 1994;31(1): 55.

습식법에 의한 고투자율 Mn-Zn Ferrite의 제조에 관한 연구

이경희, 이병하, 허원도¹, 황우연¹

명지대학교 공과대학 무기재료과
¹삼화전자공업주식회사

Preparation of High Permeability Mn-Zn Ferrites by the Wet Method

ABSTRACT

Mn-Zn ferrite powder was obtained by wet method that was to be coprecipitated the metal ions of Fe2+, Mn2+ and Zn2+ with alkali solution. The target composition of the ferrite powder was 52 mol% Fe2O3, 24 mol% MnO, and 24 mol% ZnO, that was based on the region of high permeability. And the other ferrite powder was prepared by the dry method that was to be mixed the metal oxides as the above chemical composition. The wet method was compared with dry method for the powder properties and the electromagnetic characteristics of sintered cores. The synthesized powder by wet method was smaller particle size, narrower particle distribution, and higher purity than that of dry method. The initial permeability of sintered sample prepared by the wet method was 14000~28000, on the other side, 9000~15500 in case of the dry method.