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MNZN FERRITE SINTERED BODY AND METHOD FOR MANUFACTURING MNZN FERRITE
To provide an MnZn ferrite sintered body having low magnetic core loss even in a lower temperature range of 60°C or less.SOLUTION: An MnZn ferrite sintered body contains a main component consisting of 53.5 to 54.3 mol% Fe in terms of Fe2O3, 4.2 to 7.2 mol% Zn in terms of ZnO, and the balance Mn in terms of MnO, and a sub-component consisting of 0.003 to 0.018 parts by mass of Si in terms of SiO2, 0.03 to 0.21 parts by mass in Ca in terms of CaCO3, 0.40 to 0.50 parts by mass in Co in terms of Co3O4, 0 to 0.09 parts by mass of Zr in terms of ZrO2, and 0 to 0.015 parts by mass of Nb in terms of Nb2O5 for a total of 100 parts by mass of the main components. When Zn content is C(Zn) and Co content is C(Co), C(Zn)/C(Co) is 9.3 to 16.0, and the maximum core loss at 23 to 100°C at a frequency of 200 kHz and an excitation magnetic flux density of 200 mT is 1000 kW/m3 or less.SELECTED DRAWING: None
【課題】60℃以下の低い温度域でも磁心損失が低いMnZn系フェライト焼結体を提供する。【解決手段】Fe2O3換算で53.5～54.3モル％のFe、ZnO換算で4.2～7.2モル％のZn、及びMnO換算で残部のMnからなる主成分と、主成分合計100質量部に対して、SiO2換算で0.003～0.018質量部のSi、CaCO3換算で0.03～0.21質量部のCa、Co3O4換算で0.40～0.50質量部のCo、ZrO2換算で0～0.09質量部のZr、及びNb2O5換算で0～0.015質量部のNbからなる副成分とを含有し、Zn含有量をC(Zn)、Co含有量をC(Co)としたとき、C(Zn)／C(Co)が9.3～16.0であり、200kHzの周波数及び200mTの励磁磁束密度における23～100℃での磁心損失の最大値が1000kW/m3以下であることを特徴とするMnZn系フェライト焼結体。【選択図】なし
MNZN FERRITE SINTERED BODY AND METHOD FOR MANUFACTURING MNZN FERRITE
To provide an MnZn ferrite sintered body having low magnetic core loss even in a lower temperature range of 60°C or less.SOLUTION: An MnZn ferrite sintered body contains a main component consisting of 53.5 to 54.3 mol% Fe in terms of Fe2O3, 4.2 to 7.2 mol% Zn in terms of ZnO, and the balance Mn in terms of MnO, and a sub-component consisting of 0.003 to 0.018 parts by mass of Si in terms of SiO2, 0.03 to 0.21 parts by mass in Ca in terms of CaCO3, 0.40 to 0.50 parts by mass in Co in terms of Co3O4, 0 to 0.09 parts by mass of Zr in terms of ZrO2, and 0 to 0.015 parts by mass of Nb in terms of Nb2O5 for a total of 100 parts by mass of the main components. When Zn content is C(Zn) and Co content is C(Co), C(Zn)/C(Co) is 9.3 to 16.0, and the maximum core loss at 23 to 100°C at a frequency of 200 kHz and an excitation magnetic flux density of 200 mT is 1000 kW/m3 or less.SELECTED DRAWING: None
【課題】60℃以下の低い温度域でも磁心損失が低いMnZn系フェライト焼結体を提供する。【解決手段】Fe2O3換算で53.5～54.3モル％のFe、ZnO換算で4.2～7.2モル％のZn、及びMnO換算で残部のMnからなる主成分と、主成分合計100質量部に対して、SiO2換算で0.003～0.018質量部のSi、CaCO3換算で0.03～0.21質量部のCa、Co3O4換算で0.40～0.50質量部のCo、ZrO2換算で0～0.09質量部のZr、及びNb2O5換算で0～0.015質量部のNbからなる副成分とを含有し、Zn含有量をC(Zn)、Co含有量をC(Co)としたとき、C(Zn)／C(Co)が9.3～16.0であり、200kHzの周波数及び200mTの励磁磁束密度における23～100℃での磁心損失の最大値が1000kW/m3以下であることを特徴とするMnZn系フェライト焼結体。【選択図】なし
MNZN FERRITE SINTERED BODY AND METHOD FOR MANUFACTURING MNZN FERRITE
ＭｎＺｎ系フェライト焼結体及びＭｎＺｎ系フェライトの製造方法
MASUMITSU HAYATO (author) / MITSUYOSHI YASUHARU (author) / KOYUHARA TOKUKAZU (author)
2023-09-27
Patent
Electronic Resource
Japanese
MnZn-based ferrite sintered body and method for producing MnZn-based ferrite
| European Patent Office | 2023