Magnetic Property and Chemical Reaction in the Interface of Ferrite and Glass

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J. Korean Ceram. Soc. > Volume 30(5); 1993 > Article

Journal of the Korean Ceramic Society 1993;30(5): 357.

페라이트와 유리의 접합계면반응의 자기적 특성

제해준, 박병원, 홍성현, 홍국선

한국과학기술연구원 세라믹스공정연구실

Magnetic Property and Chemical Reaction in the Interface of Ferrite and Glass

ABSTRACT

Chemical reaction occurred in the interface of Mn-Zn ferrite and glass after bonding. Effects of the formation of reaction layer on the magnetic properties were investigated. The composition of glass was 23PbO-61SiO2-6ZnO-8Na2O-2K2O and the ferrite was chosen to have a high permeability. Toroid samples of ferrites bonded with glasses, were heat-treated at $700^{circ}C$, 80$0^{circ}C$ and 90$0^{circ}C$ for 1h. The reaction was observed to increase with bonding temperature, resulting in the development of reaction layer. Subsequently the initial permeability was found to be decreased. The permeabilities decreased by 25% with increasing bonding temperature from $700^{circ}C$ to 80$0^{circ}C$. At the bonding temperature of 90$0^{circ}C$, the permeability was decreased by 45%, compared to that of 80$0^{circ}C$.