Ferrite composite and electronic part

A technology for electronic parts and compositions, applied in the field of ferrite compositions and electronic parts, to achieve the effect of reducing power loss and saving electricity

Active Publication Date: 2012-11-28
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, the above-mentioned Mn-Zn ferrite is also as described in Patent Document 1. It is considered that the actual driving temperature of the transformer is 60°C or higher and it is used in the low-frequency region. is not suitable for use in

Method used

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  • Ferrite composite and electronic part
  • Ferrite composite and electronic part
  • Ferrite composite and electronic part

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Experimental program
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Effect test

Embodiment 1～21 and comparative example 1～10

[0076] First, prepare the Fe 2 o 3 , ZnO and, Mn 3 o 4 Raw materials used as main components. Prepare SiO 2 and CaCO 3 Raw materials used as sub-components.

[0077] In addition, Pb and Cd are contained in iron oxide, zinc oxide, and manganese oxide which are raw materials of main components. Therefore, various raw materials of iron oxide, zinc oxide, and manganese oxide having different Cd and Pb contents were prepared, and the amounts used were adjusted so that the finally obtained samples contained the amounts of Cd and Pb described in Tables 1 to 3.

[0078] Next, the prepared raw material powder of the main component was weighed, and the raw material powder of the subcomponent was weighed according to the amount shown in Table 1, and wet mixing was performed for 5 hours with a ball mill to obtain a raw material mixture.

[0079] Next, the obtained raw material mixture was calcined in air at 950° C. for 2 hours to form a calcined material and then wet pulverized wit...

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Abstract

The invention provides a ferrite composite. The ferrite composite includes a main component which has 63.3 to 65.5 mole% ferric oxide converted to Fe2O3, 11.6 to 15.8 mole % zinc oxide converted to ZnO, and the balance being manganese oxide. The ferrite composite is characterized in that relative to the main component 100 weight%, the monox content is 60 to 250ppm converted to SiO2, the calcium oxide content is 360 to 1000ppm converted to CaO, the Pb content is below 7ppm converted to element, and the Cd content is below 7ppm converted to element.

Description

technical field [0001] The present invention relates to ferrite composition and electronic parts. More specifically, it relates to electronic components whose use temperature or ambient temperature is close to room temperature or outdoor temperature, or close to freezing temperature, and which can reduce power loss and achieve high saturation magnetic flux density in an environment of high frequency and low magnetic field, and A suitable ferrite composition for the electronic part. Background technique [0002] In recent years, the miniaturization and weight reduction of various electronic devices has rapidly progressed. In order to cope with this, electronic components used in the electrical circuits of various electronic devices are increasingly required to be miniaturized, efficient, and high-frequency. [0003] For example, the coil cores used in DC-DC converters have always used Ni-Zn ferrite. However, the power loss of Ni-Zn ferrite is relatively large, so it is diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/38H01F1/36H01F27/255
Inventor 伊藤守伊藤纲佐佐木弘胜川口达哉高木荣光
Owner TDK CORPARATION
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