CN103896562A - Ferrite material with high magnetic conductivity - Google Patents

Ferrite material with high magnetic conductivity Download PDF

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Publication number
CN103896562A
CN103896562A CN201210586833.1A CN201210586833A CN103896562A CN 103896562 A CN103896562 A CN 103896562A CN 201210586833 A CN201210586833 A CN 201210586833A CN 103896562 A CN103896562 A CN 103896562A
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ferrite material
parts
high magnetic
magnetic conductivity
mno
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CN201210586833.1A
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蒋观忠
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TIANJIN HAOGAO MAGNETS CO Ltd
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TIANJIN HAOGAO MAGNETS CO Ltd
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Abstract

The invention provides a ferrite material with high magnetic conductivity and a preparation method thereof. The ferrite material comprises the following components in parts by weight: 70.1-70.7 parts of Fe2O3, 19.1-19.7 parts of MnO, 9.9-10.5 parts of ZnO, 0.1-0.4 part of CaCO3, 0.001-0.008 part of SiO2, 0.05-0.15 part of Co2O3, 0.1-0.4 part of TiO2, 0.5-1 part of polyvinyl alcohol, 0.02-0.06 part of dispersant, and 0.01-0.03 part of defoamer. The method comprises the following steps: weighing the components in parts by weight; presintering powder and then sanding for two hours; controlling the inlet temperature at 430-510 DEG C and the outlet temperature at 100-180 DEG C; and spraying to form a product material by a spray tower. By adopting the ferrite material with high magnetic conductivity, the disaccommodation factor (DF is smaller than 2) is greatly reduced.

Description

A kind of high magnetic conductivity ferrite material
Technical field
The present invention relates to a kind of Ferrite Material, especially a kind of high magnetic conductivity ferrite material.
Background technology
Ferrite Material (ferrite) is made up of the several oxide compound using ferric ion as main positive ion composition, and presents ferrimagnetism or anti-ferromagnetic material.
Ferrite Material is that one has ferromagnetic metal oxide.With regard to electrical characteristic, ferritic resistivity is more much bigger than metal, alloy magnetic material, and also has higher dielectric properties.Ferritic magnetic property has higher magnetic permeability while also showing high frequency.Thereby ferrite has become the broad-spectrum nonmetal magnetic material in high frequency light current field.Because the magnetic energy storing in ferrite unit volume is lower, full close also lower (conventionally only have pure iron 1/3～1/5) of the specific magnetising moment, thereby limited it in the low frequency forceful electric power of the magnetic energy density of having relatively high expectations and the application in high-power field.
Ferrite Material is a kind of nonmetal magnetic material, and it is for example, to be formed by ferric oxide and one or more other metal oxides (: nickel oxide, zinc oxide, manganese oxide, magnesium oxide, barium oxide, strontium oxide etc.) preparation sintering.Its relative magnetic permeability can be up to several thousand, and resistivity is 1011 times of metal, and eddy-current loss is little, is suitable for making high-frequency electromagnetic device.Ferrite has Hard Magnetic, soft magnetism, square magnetic, gyromagnet and pressure magnetic five classes.Be once called as ferrite or magnetic ferrites, its production process and outer appearnce be pottery seemingly, thereby also referred to as ferrite.Ferrite is the composite oxides of iron and other one or more suitable metallic element, and character belongs to semi-conductor, and usually used as magnetic medium application, between ferrite magnetic material and metal or alloy magneticsubstance, most important difference is electroconductibility.Conventionally the former resistivity is 102～108 Ω cm, and the latter only has 10-6～10-4 Ω cm.Wherein, to mainly contain MnZn system, NiZn system, MgZn be three major types to soft magnetic ferrite; If press application characteristic parametric classification, can be divided into high magnetic permeability, power ferrite material, high frequency ferrite material, high resistivity material, very high frequency(VHF) soft magnetic ferrite (hexaplanar high frequency ferrite), high frequency high power ferrite material etc.
MnZn based ferrite has high initial permeability, higher saturation induction density, there is low loss at wireless intermediate frequency or low-frequency range, it is the best Ferrite Material of the following band limits magnetic property of 1 megahertz, conventional MnZn based ferrite initial permeability μ i=400-20000, saturation induction density Bs=400-530mT.The resistivity of MgZn series ferrite material is higher, is mainly used in the deflector coil magnetic core of making picture tube or typotron.
NiZn based ferrite frequency of utilization 100kHz～100MHz, the highest 300MHz that uses, this class permeability is lower, and resistivity is very high, is generally 105～107 Ω cm.Therefore, high-frequency vortex loss is little, is the excellent material of the above high band magnetic property of 1MHz, the magnetic permeability μ i=5-1500 of conventional NiZn based material, saturation induction density Bs=250-400mT.
In recent years, along with the application of Ferrite Material is more and more extensive, Ferrite Material has been applied to the manufacture of various inducers, transformer, wave filter and reactance coil, and as hyundai electronics message areas such as computer and peripheral equipment, business automation equipment, digital communication and artificial traffic equipment, internet, household electrical appliance, electromagnetic compatibility equipment, green illumination device, industrial automations, and automobile, aviation, military field.This has just had higher and has had more requirement targetedly the characteristic of Ferrite Material, for example, in some application scenario, as the telefault of carrier wave machine not only requires miniaturization, the prior magneticsubstance that requires has high stability, if require inductance volume little, the μ i of material wants high. but often there is contradiction in μ i and stability, must ensure to improve μ i under the reliable prerequisite of inductance stabilization as far as possible.Therefore, need according to actual needs, develop the Ferrite Material with special performance that more can adapt to modern science and technology needs.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high magnetic conductivity ferrite material.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of high magnetic conductivity ferrite material, by Fe 2o 3, MnO, ZnO, CaCO 3, SiO 2, Co 2o 3and TiO 2composition, by its parts by weight Fe 2o 370.1-70.7 part, MnO 19.1-19.7 part, ZnO9.9-10.5 part, CaCO 30.1-0.4 part, SiO 20.001-0.008 part, Co 2o 30.05-0.15 part, TiO 20.1-0.4 part.
Preferably, above-mentioned high magnetic conductivity ferrite material, by its parts by weight Fe 2o 370.4 parts, MnO19.4 part, 10.2 parts of ZnO, CaCO 30.2 part, SiO 20.005 part, Co 2o 30.11 part, TiO 20.3 part.
The preparation method of above-mentioned high magnetic conductivity ferrite material, concrete preparation process is as follows:
(1) take Fe by above-mentioned parts by weight 2o 370.1-70.7 part, MnO 19.1-19.7 part, ZnO9.9-10.5 part, CaCO 30.1-0.4 part, SiO 20.001-0.008 part, Co 2o 30.05-0.15 part, TiO 20.1-0.4 part, polyvinyl alcohol 0.5-1 part, dispersion agent (claiming again defloculating agent) 0.02-0.06 part, defoamer 0.01-0.03 part;
(2) by the Fe taking in step (1) 2o 3, MnO, ZnO carry out after batch mixing, in 970-1070 DEG C of preburning powdered material, adds CaCO in sand grinding process 3, SiO 2, Co 2o 3, TiO 2with polyvinyl alcohol, dispersion agent, defoamer, sand milling two hours;
(3) control inlet temperature 430-510 DEG C, temperature out 100-180 DEG C, is sprayed into finished product material through spray tower.
Preferably, the preparation method of above-mentioned high magnetic conductivity ferrite material, in described step (2) in 1000 DEG C of preburning powdered materials.
Preferably, the preparation method of above-mentioned high magnetic conductivity ferrite material, controls 460 DEG C of inlet temperatures, 150 DEG C of temperature outs in described step (3).
The invention has the beneficial effects as follows:
Above-mentioned high magnetic conductivity ferrite material, by the specific consumption combination of each component, greatly reduces disaccommodation factor (DF<2), than temperature factor TK μ/μ i(0.3 ± 0.2) * 10 -6, temperature range (10 DEG C-55 DEG C), can be used for communication equipment, has effectively improved communication equipment job stability; Its preparation method is simple, is applicable to the needs that large-scale industrial is produced.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further described.
Embodiment 1
A kind of high magnetic conductivity ferrite material, by Fe 2o 3, MnO, ZnO, CaCO 3, SiO 2, Co 2o 3and TiO 2composition, wherein Fe 2o 370.4kg, MnO 19.4kg, ZnO 10.2kg, CaCO 30.2kg, SiO 20.005kg, Co 2o 30.11kg, TiO 20.3kg.
The preparation method of above-mentioned high magnetic conductivity ferrite material, concrete preparation process is as follows:
(1) take Fe 2o 370.4kg, MnO 19.4kg, ZnO 10.2kg, CaCO 30.2kg, SiO 20.005kg, Co 2o 30.11kg, TiO 20.3kg, polyvinyl alcohol 0.7kg, dispersion agent (claiming again defloculating agent, Yuncheng Yu Chuan Chemical Co., Ltd.) 0.05kg, defoamer (rising sun peak, Pests in Tianjin Binhai New Area Fine Chemical Works) 0.02kg;
(2) by the Fe taking in step (1) 2o 3, MnO, ZnO carry out after batch mixing, in 1000 DEG C of preburning powdered materials, adds CaCO in sand grinding process 3, SiO 2, Co 2o 3, TiO 2with polyvinyl alcohol, dispersion agent, defoamer, sand milling two hours;
(3) control 460 DEG C of inlet temperatures, 150 DEG C of temperature outs, are sprayed into finished product material through spray tower.
Embodiment 2
A kind of high magnetic conductivity ferrite material, by Fe 2o 3, MnO, ZnO, CaCO 3, SiO 2, Co 2o 3and TiO 2composition, wherein Fe 2o 370.7kg, MnO 19.1kg, ZnO 9.9kg, CaCO 30.4kg, SiO 20.008kg, Co 2o 30.15kg, TiO 20.1kg.
The preparation method of above-mentioned high magnetic conductivity ferrite material, concrete preparation process is as follows:
(1) take Fe 2o 370.7kg, MnO 19.1kg, ZnO 9.9kg, CaCO 30.4kg, SiO 20.008kg, Co 2o 30.15kg, TiO 20.1kg, polyvinyl alcohol 0.5kg, dispersion agent (claiming again defloculating agent, Yuncheng Yu Chuan Chemical Co., Ltd.) 0.06kg, defoamer (rising sun peak, Pests in Tianjin Binhai New Area Fine Chemical Works) 0.01kg;
(2) by the Fe taking in step (1) 2o 3, MnO, ZnO carry out after batch mixing, in 1070 DEG C of preburning powdered materials, adds CaCO in sand grinding process 3, SiO 2, Co 2o 3, TiO 2with polyvinyl alcohol, dispersion agent, defoamer, sand milling two hours;
(3) control 430 DEG C of inlet temperatures, 100 DEG C of temperature outs, are sprayed into finished product material through spray tower.
Embodiment 3
A kind of high magnetic conductivity ferrite material, by Fe 2o 3, MnO, ZnO, CaCO 3, SiO 2, Co 2o 3and TiO 2composition, wherein Fe 2o 370.1kg, MnO 19.7kg, ZnO 10.5kg, CaCO 30.1kg, SiO 20.001kg, Co 2o 30.05kg, TiO 20.4kg.
The preparation method of above-mentioned high magnetic conductivity ferrite material, concrete preparation process is as follows:
(1) take Fe 2o 370.1kg, MnO 19.7kg, ZnO 10.5kg, CaCO 30.1kg, SiO 20.001kg, Co 2o 30.05kg, TiO 20.4kg, polyvinyl alcohol 1kg, dispersion agent (claiming again defloculating agent, Yuncheng Yu Chuan Chemical Co., Ltd.) 0.02kg, defoamer (rising sun peak, Pests in Tianjin Binhai New Area Fine Chemical Works) 0.03kg;
(2) by the Fe taking in step (1) 2o 3, MnO, ZnO carry out after batch mixing, in 970 DEG C of preburning powdered materials, adds CaCO in sand grinding process 3, SiO 2, Co 2o 3, TiO 2with polyvinyl alcohol, dispersion agent, defoamer, sand milling two hours;
(3) control 510 DEG C of inlet temperatures, 180 DEG C of temperature outs, are sprayed into finished product material through spray tower.
Embodiment 4
A kind of high magnetic conductivity ferrite material, by Fe 2o 3, MnO, ZnO, CaCO 3, SiO 2, Co 2o 3and TiO 2composition, wherein Fe 2o 370.5kg, MnO 19.3kg, ZnO1 0.1kg, CaCO 30.2kg, SiO 20.003kg, Co 2o 30.12kg, TiO 20.2kg.
The preparation method of above-mentioned high magnetic conductivity ferrite material, concrete preparation process is as follows:
(1) take Fe 2o 370.5kg, MnO 19.3kg, ZnO10.1kg, CaCO 30.2kg, SiO 20.003kg, Co 2o 30.12kg, TiO 20.2kg, polyvinyl alcohol 0.8kg, dispersion agent (claiming again defloculating agent, Yuncheng Yu Chuan Chemical Co., Ltd.) 0.04kg, defoamer (rising sun peak, Pests in Tianjin Binhai New Area Fine Chemical Works) 0.03kg;
(2) by the Fe taking in step (1) 2o 3, MnO, ZnO carry out after batch mixing, in 1040 DEG C of preburning powdered materials, adds CaCO in sand grinding process 3, SiO 2, Co 2o 3, TiO 2with polyvinyl alcohol, dispersion agent, defoamer, sand milling two hours;
(3) control 500 DEG C of inlet temperatures, 130 DEG C of temperature outs, are sprayed into finished product material through spray tower.
The described component of one of embodiment 1-4 is commercially available prod; each amounts of components is increased or reduced according to same ratio, and the parts by weight relation of the each component of gained all belongs to protection scope of the present invention, wherein; dispersion agent and defoamer are this area generic noun, are specific product.
Performance test example:
High magnetic conductivity ferrite material described in tested object: embodiment 1.
With T18*8*5 toroidal core around 20 circles, HP4192A Meter Test inductance value L(test condition 100KHz50mv) disaccommodation instrument test disaccommodation (1 ' and 10 ') high-low temperature chamber probe temperature coefficient, probe temperature point (10 DEG C, 25 DEG C, 55 DEG C), concrete test result is in table 1.
Table 1
L μi DF TKu/μi 55℃ 25℃ -10℃ TKμ/μi
9870 2761 1.7 0.21 10800 10610 10130 0.17
Above-mentioned detailed description of this kind of high magnetic conductivity ferrite material being carried out with reference to embodiment; illustrative instead of determinate; can list several embodiment according to institute's limited range; therefore in the variation and the amendment that do not depart under general plotting of the present invention, within should belonging to protection scope of the present invention.

Claims (5)

1. a high magnetic conductivity ferrite material, is characterized in that: by Fe 2o 3, MnO, ZnO, CaCO 3, SiO 2, Co 2o 3and TiO 2composition, by its parts by weight Fe 2o 370.1-70.7 part, MnO 19.1-19.7 part, ZnO 9.9-10.5 part, CaCO 30.1-0.4 part, SiO 20.001-0.008 part, Co 2o 30.05-0.15 part, TiO 20.1-0.4 part.
2. high magnetic conductivity ferrite material according to claim 1, is characterized in that: by its parts by weight Fe 2o 370.4 parts, 19.4 parts of MnO, 10.2 parts of ZnO, CaCO 30.2 part, SiO 20.005 part, Co 2o 30.11 part, TiO 20.3 part.
3. high magnetic conductivity ferrite material according to claim 1 and 2, is characterized in that: obtained by following method:
(1) take Fe by above-mentioned parts by weight 2o 370.1-70.7 part, MnO 19.1-19.7 part, ZnO9.9-10.5 part, CaCO 30.1-0.4 part, SiO 20.001-0.008 part, Co 2o 30.05-0.15 part, TiO 20.1-0.4 part, polyvinyl alcohol 0.5-1 part, dispersion agent 0.02-0.06 part, defoamer 0.01-0.03 part;
(2) by the Fe taking in step (1) 2o 3, MnO, ZnO carry out after batch mixing, in 970-1070 DEG C of preburning powdered material, adds CaCO in sand grinding process 3, SiO 2, Co 2o 3, TiO 2with polyvinyl alcohol, dispersion agent, defoamer, sand milling two hours;
(3) control inlet temperature 430-510 DEG C, temperature out 100-180 DEG C, is sprayed into finished product material through spray tower.
4. high magnetic conductivity ferrite material according to claim 3, is characterized in that: in described step (2) in 1000 DEG C of preburning powdered materials.
5. high magnetic conductivity ferrite material according to claim 3, is characterized in that: in described step (3), control 460 DEG C of inlet temperatures, 150 DEG C of temperature outs.
CN201210586833.1A 2012-12-28 2012-12-28 Ferrite material with high magnetic conductivity Pending CN103896562A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105938748A (en) * 2015-03-04 2016-09-14 三星电机株式会社 Composite magnetic sheet and magneto-dielectric antenna using thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105938748A (en) * 2015-03-04 2016-09-14 三星电机株式会社 Composite magnetic sheet and magneto-dielectric antenna using thereof
CN105938748B (en) * 2015-03-04 2019-04-30 三星电机株式会社 Composite magnetic sheet and the magnetic medium antenna for using the composite magnetic sheet

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Application publication date: 20140702