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Method for producing soft magnetic core of load palladium oxide

A production method and palladium oxide technology are applied in the field of oxide magnetic material manufacturing to achieve the effects of high grain boundary resistivity, uniform crystal grains and stable electromagnetic properties

Inactive Publication Date: 2013-09-11
ANHUI TAIDE ELECTRONICS TECH
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AI Technical Summary

Problems solved by technology

Now the electronic communication industry needs ferrite cores with low core loss and high magnetic permeability to meet the miniaturization and high efficiency requirements of current electrical equipment, and the existing magnetic cores are difficult to meet the above requirements

Method used

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Embodiment 1

[0013] Embodiment 1: the preparation method of the soft magnetic core of load palladium oxide, comprises the following steps:

[0014] (1) Pre-fired mixture: the molar amount of mixture A is Fe 3 o 4 82mol, manganese oxide 21mol, palladium oxide 0.35mol, molybdenum powder 0.22mol, ferrosilicon 0.13mol, nanoscale titanium dioxide 0.35mol, carbonyl iron powder 0.52mol and chromium powder 0.65mol; The following proportion components: 220ppm Nb 2 o 5 、100ppm Bi 2 o 3 , 140ppm tungsten trioxide, 80ppm Pd, 245ppm V, 370ppm manganese sulfide, 420ppm molybdenum disulfide powder and 580ppm graphite powder; respectively accurately weigh mixture A and mixture B, mix them separately using a mixing tank, and stir at 5800 rpm After the mixing time is 2.5 hours, they are then sent to the rotary kiln for pre-calcination, the temperature is controlled at 370°C, and the pre-calcination time is 1.8 hours to obtain pre-fired mixture A and mixture B;

[0015] (2) Grinding: Send the mixtures...

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Abstract

The invention discloses a method for producing a soft magnetic core of load palladium oxide. The method comprises the following steps of: pre-burning mixtures, wherein the components of the mixture A comprise Fe3O4, manganese oxide, palladium oxide, molybdenum powder, ferrosilicon, nanoscale titanium dioxide, carbonyl iron powder and chromium powder; and the components of the mixture B comprise Nb2O5, Bi2O3, tungsten trioxide, Pd, V, manganese sulfide, molybdenum disulfide powder, and graphite powder according to the ratio equivalent to the total weight of the mixture A; then grinding, mixed pulping, spray drying of powder, pressing and sintering green bodies orderly, so as to obtain the soft magnetic core. The initial magnetic conductivity of the produced product is 13300 by optimizing the formula design and sintering technology; cracks of the sintered product are reduced; the qualified rate can be up to over 9.05%; the produced product has the characteristics of high grain boundary resistivity, low porosity, large and even grain size, excellent impedance characteristic in a high-frequency range, and stable electromagnetic property; a magnetic core product is suitable for each electronic field.

Description

technical field [0001] The invention relates to the field of manufacturing oxide magnetic materials, in particular to a method for manufacturing a soft magnetic core loaded with palladium oxide. Background technique [0002] With the development of communication technology and digitalization of electronic products, new requirements are put forward for soft ferrite and components. High-performance and high-permeability magnetic cores are widely used in various basic materials for telecommunications and information, such as common-mode filters, Saturated inductors, current transformers, leakage protectors, insulation transformers, signal and pulse transformers and other fields have been widely used. Now the electronic communication industry needs ferrite cores with low core loss and high magnetic permeability to meet the miniaturization and high efficiency requirements of current electrical equipment. The existing magnetic cores are difficult to meet the above requirements. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622
Inventor 徐杰杨从会黄国祥刘京州曾性儒张忠仁王玉志
Owner ANHUI TAIDE ELECTRONICS TECH
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