Development of low loss Mn-Zn ferrites having the fine microstructure

被引：34

作者：

Otobe, S ^{[1
]}

Yachi, Y ^{[1
]}

Hashimoto, T ^{[1
]}

Tanimori, T ^{[1
]}

Shigenaga, T ^{[1
]}

Takei, H ^{[1
]}

Hontani, K ^{[1
]}

机构：

[1] FDK CORP, Shizuoka 4310495, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1999年 / 35卷 / 05期

关键词：

low loss Mn-Zn ferrite; 100kHz; microstructure control; grain boundary; additives;

D O I：

10.1109/20.800540

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We studied relations between the microstructure and core loss of Mn-Zn ferrites for power supplies. As the results, we found that the lowest core loss was achieved at 100 kHz and 200 mT condition when the average grain size were 15 to 17 mu m. Then, we examined the effect of the third element in addition to CaO-SiO2 on their deposition behavior in the grain boundary and we found the some additives such as Nb2O5, Ta2O5 and ZrO2 which reduce the core loss. Further more, by optimizing the sintering condition, we were able to obtain the extremely low loss Mn-Zn ferrite material for power applications.

引用

页码：3409 / 3411

页数：3

共 8 条

[1]

BANDO Y, 1969, POWDER POWDER METALL, V15, P34

[2]

INOUE O, 1993, IEEE T MAGN, V29, P3533

[3]

KAWANO T, 1998, P J MAG SOC JPN, V22, P219

[4]

MOCHIZUKI T, 1992, P ICF, V6, P55

[5] CHART OF PO2 VERSUS TEMPERATURE AND OXIDATION DEGREE FOR MN-ZN FERRITES IN COMPOSITION RANGE - 50 LESS-THAN FE2O3 LESS-THAN 54, 20 LESS-THAN MNO LESS-THAN 35, 11 LESS-THAN ZNO LESS-THAN 30 (MOLE PERCENT) [J].

MORINEAU, R ;

PAULUS, M .

IEEE TRANSACTIONS ON MAGNETICS, 1975, 11 (05) :1312-1314

[6]

STIJNTJES TGW, 1989, P ICF, V5, P589

[7]

TAKAHASHI F, 1992, P ICF, V6, P815

[8]

Yamada S., 1995, J MAG SOC JPN, V19, P421

← 1 →