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Mn-Zn wide-temperature soft magnetic ferrite material and preparation method thereof

A soft magnetic ferrite and magnetic ferrite technology, applied in the field of Mn-Zn wide temperature soft magnetic ferrite material and its preparation, can solve problems such as backwardness, and achieve the effects of low production cost, low power consumption and superior performance

Inactive Publication Date: 2009-10-14
上海华源磁业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Domestic development and production of soft magnetic materials are still relatively backward

Method used

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  • Mn-Zn wide-temperature soft magnetic ferrite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weighing; 71wt% iron red (Fe 2 o 3 ), 22wt% Mn 3 o 4 , 7wt% ZnO, put it into a vibrating ball mill and vibrate for 20min, then put it into a rotary kiln, pre-fire at a temperature of 1010°C, and the output is 2Kg / min, go to the sand mill and add additives

[0045] NiO: 0.0125wt%

[0046] co 2 o 3 : 0.0275wt%

[0047] CaCO 3 : 0.025wt%

[0048] SiO 2 : 0.0025wt%

[0049] Finally, the Mn-Zn ferrite powder is obtained by spraying and granulating through a spray granulation tower at an outlet temperature of 110°C. Take the powder to make T-30*20*8, set density 3.0g / cm 3 , placed in a nitrogen tunnel kiln for sintering, and kept at 1360°C for 4 hours in the high temperature zone of the heating zone. A mixture of nitrogen and oxygen is added to the dense zone, the oxygen content is controlled at 5%, and the temperature in the cooling zone is controlled at 1200-1100°C, and the oxygen content is controlled below 0.4%. Tested with an impedance analyzer and a power c...

Embodiment 2

[0051] Weighing; 70t% Fe 2 o 3 , 22wt% Mn3 o 4 , 8wt% ZnO was put into a vibrating ball mill for 20 minutes, then put into a rotary kiln, pre-fired in a 1040°C rotary kiln, and the pre-fired material was ball-milled for 20 minutes, and then put into a sand mill together with additives for sand grinding. Portions are as follows

[0052] Nb 2 o 5 : 0.025wt%

[0053] NiO: 0.0125wt%

[0054] co 2 o 3 : 0.0275wt%

[0055] CaCO 3 : 0.02wt%

[0056] SiO 2 : 0.0025wt%

[0057] Finally, the Mn-Zn ferrite powder was obtained by spraying and granulating at an outlet temperature of 110°C. Take the powder to make T-30*20*8, set density 3.0g / cm 3 , put into nitrogen tunnel kiln and carry out sintering according to Example 1, and the obtained data are listed in Table 4.

Embodiment 3

[0059] Take the powder of Example 1 to make a T-30*20*8 blank, put it in a nitrogen tunnel kiln for sintering, add a mixture of nitrogen and oxygen in the dense area, control the oxygen content at 5%, and keep the high temperature area for 4 hours. The temperature in the cooling zone is controlled at 1200-1100°C and the oxygen content is controlled below 0.7%. The properties obtained are listed in Table 4.

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Abstract

The invention belongs to the technical field of soft magnetic material and discloses a Mn-Zn wide-temperature soft magnetic ferrite material and a preparation method thereof. The Mn-Zn wide-temperature soft magnetic ferrite material comprises the main materials by weight percentage: 69 to 74 percent of Fe2O3, 20 to 25 percent of Mn3O4 and 6 to 10 percent of ZnO; the sum of Fe2O3, Mn3O4 and ZnO is100 percent. The soft magnetic ferrite material has low manufacturing cost, simpleness, easy operation, lower power consumption, less heating quantity, higher primary magnetic permeability and excellent performance.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic materials, and in particular relates to a Mn-Zn wide temperature soft magnetic ferrite material and a preparation method thereof. Background technique [0002] In today's world, Mn-Zn materials are used for soft magnetic materials, such as PC-30, PC40, PC50, PC95, Siemens N47, N67, Philips 3F3, FDK, H63B, and H45C. The manufacturers base their material properties on the basis of their material characteristics. Domestic manufacturers mainly use PC30 and PC40 material characteristics are used as benchmarks, and only a few manufacturers can mass-produce them. Domestic development and production of soft magnetic materials are still relatively backward. Contents of the invention [0003] The purpose of the present invention is to overcome the defects in the prior art and provide a Mn-Zn ferrite material with low production cost, high magnetic permeability and low loss from normal temperature t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/38C04B35/622
Inventor 赵恩起陆超
Owner 上海华源磁业股份有限公司
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