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Ferrite composition and electronic component

一种组合物、铁氧体的技术，应用在铁化合物、镍化合物、电气元件等方向，能够解决困难、磁导率温度特性有任何考量、难低温烧成等问题

Inactive Publication Date: 2011-10-19
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, Patent Publication No. 2005-145781 does not take any consideration of temperature characteristics of magnetic permeability
Also, although it is stated that only SiO is added due to the micronization of raw materials 2 The idea that it can be fired at about 900°C, but it is actually difficult
[0010] Patent Publication No. 2005-213092 not only does not consider the temperature characteristics of magnetic permeability, but also the firing temperature is above 1000°C, making it difficult to fire at low temperature

Method used

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  • Ferrite composition and electronic component
  • Ferrite composition and electronic component
  • Ferrite composition and electronic component

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0075] First prepare Fe 2 o 3 powder, NiO powder, CuO powder, ZnO powder, as the main component raw material. Prepare SiO 2 powder, B 2 o 3 Powder is used as a sub-component raw material. SiO of sample number 33 2 The average particle size of the raw material of the powder is 0.42 μm, and SiO of other sample numbers 2 The raw material average particle diameter of the powder was 0.025 μm.

[0076] After that, the raw materials of the prepared main component and subcomponents were weighed according to the composition shown in Table 1 and Table 2, and wet-mixed with a ball mill for 16 hours to obtain a raw material mixture.

[0077] Thereafter, the obtained raw material mixture was calcined in air at 750° C. for 4 hours to form a calcined material, and then wet pulverized by a ball mill for 16 hours to obtain a pulverized material.

[0078] Then, after drying the pulverized material, 1.0% by weight of polyvinyl alcohol was added as a binder to 100% by weight of the pulver...

experiment example 2

[0103] Except for using the compounds shown in Table 3 as subcomponents, and their contents in the amounts shown in Table 3, the others were the same as in Experimental Example 1, and a ring-shaped center sample was prepared, and the characteristics were evaluated as in Experimental Example 1. The results are shown in Table 3.

[0104] Among these, sample number 54 uses a glass composition as a raw material of a subcomponent, and content of a subcomponent is the value shown in Table 3 with respect to 100 weight% of main components. Specifically, containing 80% by weight of SiO 2 , 17% by weight of B 2 o 3 , 2.1 wt% K 2 In the glass composition of O, 2.5% by weight was added based on 100% by weight of the main component. Contains K 2 The average crystal grain size of the O sample is preferably 0.2 to 1.3 μm.

[0105] table 3

[0106]

[0107] As shown in Table 3, when silicon oxide and boron oxide are contained as subcomponents, and the content of potassium oxide or t...

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Abstract

A ferrite composition includes a main component having 46.0 to 49.8 mol % of an iron oxide in terms of Fe2O3, 5.0 to 14.0 mol % of a copper oxide in terms of CuO and 6.0 to 32.0 mol % of a zinc oxide in terms of ZnO, and a remainder of the main component is composed of a nickel oxide; and as subcomponents, with respect to 100 wt % of the main component, 0.5 to 6.0 wt % of a silicon oxide in termsof SiO2 and 0.01 to 2.0 wt % of a boron oxide in terms of B2O3. Further, as a subcomponent, 0.01 to 0.17 wt % of potassium oxide in terms of K2O or 0.3 to 2.0 wt % of tin oxide in terms of SnO2 may be included. According to the present invention, the ferrite composition having good initial permeability, good superposed direct current characteristic and comparatively good temperature characteristic of the initial permeability, and achieving low temperature firing; and an electronic component having the ferrite composition can be provided.

Description

technical field [0001] The present invention relates to a ferrite composition suitable for use in electronic parts such as inductors and electronic parts such as inductors using the ferrite composition. Background technique [0002] In recent years, the miniaturization and weight reduction of various electronic devices such as portable devices have rapidly progressed, and correspondingly, the demand for miniaturization, weight reduction, and high performance of electronic components used in circuits of various electronic devices has rapidly increased. [0003] Ferrite compositions with excellent magnetic properties are often used as magnets in electronic parts such as inductor components. [0004] Among such materials, in addition to having a high magnetic permeability, a material with a small decrease in the magnetic permeability when a direct current is applied is sought, that is, a material having a good direct current superposition characteristic is sought. [0005] For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/28C04B35/26
CPCB82Y30/00C01G49/0018C01G53/006C01P2002/52C01P2004/61C01P2006/42C04B35/265C04B2235/3201C04B2235/3203C04B2235/3279C04B2235/3281C04B2235/3284C04B2235/3293C04B2235/3409C04B2235/3418C04B2235/5436C04B2235/5454C04B2235/785C04B2235/786H01F1/344C01P2004/03C04B35/26H01F1/34
Inventor 和田龙一川田原奖高桥幸雄政冈雷太郎铃木孝志桃井博
Owner TDK CORPARATION