CN104557003A - Vehicle ferrite magnetic core material - Google Patents
Vehicle ferrite magnetic core material Download PDFInfo
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- CN104557003A CN104557003A CN201510020058.7A CN201510020058A CN104557003A CN 104557003 A CN104557003 A CN 104557003A CN 201510020058 A CN201510020058 A CN 201510020058A CN 104557003 A CN104557003 A CN 104557003A
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- carbonyl iron
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Abstract
The invention discloses a vehicle ferrite magnetic core material comprising a main material and an additive, wherein the main material comprises the following components according to mole ratios: 64-68.1mol of Fe2O3, 14.6-20mol of manganese oxide, 14.3-16.5mol of zinc oxide, 0.2-0.5mol of graphite, 0.2-0.3mol of tungsten carbide and 0.01-0.02mol of tantalum coated carbonyl iron powder; and the additive comprises the following components according to the weight ratio in the ferrite magnetic core material: 500-600ppm of copper oxide, 400-500ppm of nickel oxide and 20-50ppm of lithium nitride. The tantalum coated carbonyl iron powder added into the ferrite magnetic core material provided by the invention has high magnetic fluxes under a high frequency and an ultrahigh frequency, so that the comprehensive performance of a finished product is further improved. The magnetic core material disclosed by the invention has the characteristics of high magnetic energy product, stable magnetism and strong mechanical properties.
Description
Technical field
The present invention relates generally to oxidate magnetic material and manufactures field, particularly relates to a kind of automobile-used ferrite core material.
Background technology
Along with the communication technology and the digitized development of electronic product; new requirement is proposed to soft magnetic ferrite and element; high-performance high permeability magnetic core is widely used in each type telecommunications and information stock, as the fields such as common-mode filter, pulsactor, current transformer, earth leakage protective device, insulating transformer, signal and pulse transformer are widely applied.Present telecommunications industry needs FERRITE CORE to have low core loss and high magnetic permeability, and to meet the microminiaturization of present electric equipment and high efficiency requirement, existing magnetic core is difficult to meet above-mentioned requirements;
Carbonyl iron dust has granularity little (below 10um), active large, the characteristics such as out-of-shape, and carbonyl iron dust has the high magnetic flux rate under high frequency and hyperfrequency, is also widely used in manufacturing magnetic material, in making magicore, have irreplaceable effect.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of automobile-used ferrite core material.
The present invention is achieved by the following technical solutions:
A kind of automobile-used ferrite core material, it comprises major ingredient and additive, and described major ingredient comprises according to mol ratio: the nano-corundum powder of the manganese oxide of Fe2O3,12.5-20 mol of 63-67.4 mol, the zinc oxide of 14.2-16 mol, 0.1-0.4mol, the boron oxide of 2-3 mol, the tantalum coating carbonyl iron powder of 0.01-0.02 mol; Additive comprises according to the mass ratio range accounting for described ferrite core material: the cupric oxide of 300-500ppm, the bismuth oxide of 100-200ppm, the ferrous disulfide of 100-140ppm, the white mica powder of 10-40ppm;
The preparation of described tantalum coating carbonyl iron powder comprises the following steps:
(1) preparation of premixed liquid:
Described premixed liquid is made up of the raw material of following weight parts:
Tantalum oxide 30-37, potassium borohydride 1-2, calcium aluminate 2-4, Span-80 1-2, dioctyl ester 3-4, APP 1-2, deionized water 90-100;
Mixed with calcium aluminate by tantalum oxide, ball milling is even, adds dioctyl ester, at 60-65 DEG C, is uniformly mixed 3-5 minute;
Span-80 is mixed with potassium borohydride, joins in deionized water, stir;
By each raw material mixing after above-mentioned process, add each raw material of residue, 200-300 rev/min of dispersed with stirring 6-10 minute, obtains described premixed liquid;
(2) by mass ratio be the silester of 15-20:2-3:6-10, trimethylolpropane, aluminium dihydrogen phosphate mixing, 10-20 minute is uniformly mixed at 60-70 DEG C, add the ethanol that concentration is 60-70%, 300-400 rev/min of dispersed with stirring 7-10 minute, obtains silica-alumina gel; Add carbonyl iron dust, drip the ammoniacal liquor that concentration is 20-30%, after dropwising, add premixed liquid under stirring condition, 600-800 rev/min of dispersed with stirring 40-50 minute, dry 20-40 minute at 100-120 DEG C, obtains tantalum coating carbonyl iron powder;
The mass ratio of the ammoniacal liquor that in above-mentioned steps, described concentration is the ethanol of 60-70%, carbonyl iron dust, concentration are 20-30%, aluminium dihydrogen phosphate, tantalum oxide is 200:100-120:5-20:6-10:10-20.
2, a preparation method for automobile-used ferrite core material as claimed in claim 1, is characterized in that comprising the following steps:
(1) raw material each in above-mentioned major ingredient except tantalum coating carbonyl iron powder is sent into blending tank, add the lithium carbonate of major ingredient weight 0.1-0.2%, the sodium carboxymethylcellulose of 0.4-1%, 2400-3000 rev/min is stirred mixed 2-4 hour, send into grinding pot, being ground to fineness is 50-70 μm, add the water of tantalum coating carbonyl iron powder, major ingredient weight 25-30%, high-speed stirred mixes, and obtains slurries;
(2) additive is sent into grinding pot, add the aluminium titanates of weight of additive 0.2-0.4%, the shitosan of 0.2-0.4%, being ground to fineness is 70-100 μm;
(3) by each raw material mixing after above-mentioned process, stir, spraying dry, is pressed into base, and sintering, obtains described automobile-used ferrite core material.
Advantage of the present invention is:
Add tantalum oxide in premixed liquid of the present invention, effectively can improve the surface resistive of carbonyl iron dust, improve the magnetic energy product of finished product.
The tantalum coating carbonyl iron powder that ferrite core material of the present invention adds has the high magnetic flux rate under high frequency and hyperfrequency, further improves the combination property of finished product, the features such as it is high that core material of the present invention has magnetic energy product, magnetic stability, and mechanical performance is strong.
Embodiment
Embodiment 1
A kind of automobile-used ferrite core material, it is characterized in that it comprises major ingredient and additive, described major ingredient comprises according to mol ratio: the tantalum coating carbonyl iron powder of the nano-corundum powder of the manganese oxide of Fe2O3,12.5mol of 63mol, the zinc oxide of 14.2mol, 0.4mol, the boron oxide of 3 mol, 0.01 mol; Additive comprises according to the mass ratio range accounting for described ferrite core material: the cupric oxide of 500ppm, the bismuth oxide of 200ppm, the ferrous disulfide of 140ppm, the white mica powder of 40ppm;
The preparation of described tantalum coating carbonyl iron powder comprises the following steps:
(1) preparation of premixed liquid:
Described premixed liquid is made up of the raw material of following weight parts:
Tantalum oxide 37, potassium borohydride 2, calcium aluminate 4, Span-80 2, dioctyl ester 4, APP 1, deionized water 100;
Mixed with calcium aluminate by tantalum oxide, ball milling is even, adds dioctyl ester, at 65 DEG C, is uniformly mixed 3-5 minute;
Span-80 is mixed with potassium borohydride, joins in deionized water, stir;
By each raw material mixing after above-mentioned process, add each raw material of residue, 300 revs/min of dispersed with stirring 10 minutes, obtain described premixed liquid;
(2) be the silester of 20:2-3:10, trimethylolpropane, aluminium dihydrogen phosphate mixing by mass ratio, be uniformly mixed 20 minutes, add the ethanol that concentration is 60-70% at 70 DEG C, 400 revs/min of dispersed with stirring 10 minutes, obtain silica-alumina gel; Add carbonyl iron dust, drip the ammoniacal liquor that concentration is 30% under stirring condition, after dropwising, add premixed liquid, 800 revs/min of dispersed with stirring 50 minutes, at 120 DEG C dry 40 minutes, obtain tantalum coating carbonyl iron powder;
The mass ratio of the ammoniacal liquor that in above-mentioned steps, described concentration is the ethanol of 60-70%, carbonyl iron dust, concentration are 30%, aluminium dihydrogen phosphate, tantalum oxide is 200:120:20:10:20.
A preparation method for automobile-used ferrite core material as claimed in claim 1, is characterized in that comprising the following steps:
(1) raw material each in above-mentioned major ingredient except tantalum coating carbonyl iron powder is sent into blending tank, add the lithium carbonate of major ingredient weight 0.2%, the sodium carboxymethylcellulose of 0.4%, 3000 revs/min are stirred mixed 4 hours, send into grinding pot, being ground to fineness is 70 μm, add the water of tantalum coating carbonyl iron powder, major ingredient weight 30%, high-speed stirred mixes, and obtains slurries;
(2) additive is sent into grinding pot, add the aluminium titanates of weight of additive 0.4%, the shitosan of 0.4%, being ground to fineness is 100 μm;
(3) by each raw material mixing after above-mentioned process, stir, spraying dry, is pressed into base, and sintering, obtains described automobile-used ferrite core material.
Through detecting, the basic mechanical design feature index that the product of above-described embodiment 1 gained reaches:
The initial permeability of magnetic core of the present invention is 3100 μ i;
Maximum magnetic flux core loss (100Kc, 200mT) unit: KW/m
3: 395 (100 ± 2 DEG C);
Curie temperature is higher than 240 DEG C.
Claims (2)
1. an automobile-used ferrite core material, it is characterized in that it comprises major ingredient and additive, described major ingredient comprises according to mol ratio: the nano-corundum powder of the manganese oxide of Fe2O3,12.5-20 mol of 63-67.4 mol, the zinc oxide of 14.2-16 mol, 0.1-0.4mol, the boron oxide of 2-3 mol, the tantalum coating carbonyl iron powder of 0.01-0.02 mol; Additive comprises according to the mass ratio range accounting for described ferrite core material: the cupric oxide of 300-500ppm, the bismuth oxide of 100-200ppm, the ferrous disulfide of 100-140ppm, the white mica powder of 10-40ppm;
The preparation of described tantalum coating carbonyl iron powder comprises the following steps:
(1) preparation of premixed liquid:
Described premixed liquid is made up of the raw material of following weight parts:
Tantalum oxide 30-37, potassium borohydride 1-2, calcium aluminate 2-4, Span-80 1-2, dioctyl ester 3-4, APP 1-2, deionized water 90-100;
Mixed with calcium aluminate by tantalum oxide, ball milling is even, adds dioctyl ester, at 60-65 DEG C, is uniformly mixed 3-5 minute;
Span-80 is mixed with potassium borohydride, joins in deionized water, stir;
By each raw material mixing after above-mentioned process, add each raw material of residue, 200-300 rev/min of dispersed with stirring 6-10 minute, obtains described premixed liquid;
(2) by mass ratio be the silester of 15-20:2-3:6-10, trimethylolpropane, aluminium dihydrogen phosphate mixing, 10-20 minute is uniformly mixed at 60-70 DEG C, add the ethanol that concentration is 60-70%, 300-400 rev/min of dispersed with stirring 7-10 minute, obtains silica-alumina gel; Add carbonyl iron dust, drip the ammoniacal liquor that concentration is 20-30%, after dropwising, add premixed liquid under stirring condition, 600-800 rev/min of dispersed with stirring 40-50 minute, dry 20-40 minute at 100-120 DEG C, obtains tantalum coating carbonyl iron powder;
The mass ratio of the ammoniacal liquor that in above-mentioned steps, described concentration is the ethanol of 60-70%, carbonyl iron dust, concentration are 20-30%, aluminium dihydrogen phosphate, tantalum oxide is 200:100-120:5-20:6-10:10-20.
2. a preparation method for automobile-used ferrite core material as claimed in claim 1, is characterized in that comprising the following steps:
(1) raw material each in above-mentioned major ingredient except tantalum coating carbonyl iron powder is sent into blending tank, add the lithium carbonate of major ingredient weight 0.1-0.2%, the sodium carboxymethylcellulose of 0.4-1%, 2400-3000 rev/min is stirred mixed 2-4 hour, send into grinding pot, being ground to fineness is 50-70 μm, add the water of tantalum coating carbonyl iron powder, major ingredient weight 25-30%, high-speed stirred mixes, and obtains slurries;
(2) additive is sent into grinding pot, add the aluminium titanates of weight of additive 0.2-0.4%, the shitosan of 0.2-0.4%, being ground to fineness is 70-100 μm;
(3) by each raw material mixing after above-mentioned process, stir, spraying dry, is pressed into base, and sintering, obtains described automobile-used ferrite core material.
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| CN201510020058.7A CN104557003A (en) | 2015-01-15 | 2015-01-15 | Vehicle ferrite magnetic core material |
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| CN201510020058.7A CN104557003A (en) | 2015-01-15 | 2015-01-15 | Vehicle ferrite magnetic core material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205938A (en) * | 2016-08-17 | 2016-12-07 | 安徽德信电气有限公司 | A kind of nano magnetic core material |
| CN109754982A (en) * | 2018-12-04 | 2019-05-14 | 天长市昭田磁电科技有限公司 | Magnetic core of compound magnetic material |
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| CN1201990A (en) * | 1997-06-06 | 1998-12-16 | 日立金属株式会社 | Single crystalline Mn-Zn-Based ferrite material and high-frequency mangetic head |
| JP2001167920A (en) * | 1996-04-03 | 2001-06-22 | Tdk Corp | Ferrite magnetic material and ferrite core |
| CN101266859A (en) * | 2008-01-08 | 2008-09-17 | 上海大学 | Method for quick sintering of micro-crystal ferrite magnetic core part |
| CN102603278A (en) * | 2012-03-07 | 2012-07-25 | 天通控股股份有限公司 | Stress-resistant nickel zinc ferrite with initial permeability of 120, and preparation method of stress-resistant nickel zinc ferrite |
| CN102992750A (en) * | 2012-11-23 | 2013-03-27 | 天长市昭田磁电科技有限公司 | Preparation method of high-performance manganese-zinc MnZn soft magnetic ferrite material |
| CN103046033A (en) * | 2012-12-21 | 2013-04-17 | 中国钢研科技集团有限公司 | Preparation method of coated carbonyl iron powder |
| CN103382100A (en) * | 2013-06-26 | 2013-11-06 | 蚌埠市高华电子有限公司 | Soft-magnetic ferrite magnetic core material and preparation method thereof |
-
2015
- 2015-01-15 CN CN201510020058.7A patent/CN104557003A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001167920A (en) * | 1996-04-03 | 2001-06-22 | Tdk Corp | Ferrite magnetic material and ferrite core |
| CN1201990A (en) * | 1997-06-06 | 1998-12-16 | 日立金属株式会社 | Single crystalline Mn-Zn-Based ferrite material and high-frequency mangetic head |
| CN101266859A (en) * | 2008-01-08 | 2008-09-17 | 上海大学 | Method for quick sintering of micro-crystal ferrite magnetic core part |
| CN102603278A (en) * | 2012-03-07 | 2012-07-25 | 天通控股股份有限公司 | Stress-resistant nickel zinc ferrite with initial permeability of 120, and preparation method of stress-resistant nickel zinc ferrite |
| CN102992750A (en) * | 2012-11-23 | 2013-03-27 | 天长市昭田磁电科技有限公司 | Preparation method of high-performance manganese-zinc MnZn soft magnetic ferrite material |
| CN103046033A (en) * | 2012-12-21 | 2013-04-17 | 中国钢研科技集团有限公司 | Preparation method of coated carbonyl iron powder |
| CN103382100A (en) * | 2013-06-26 | 2013-11-06 | 蚌埠市高华电子有限公司 | Soft-magnetic ferrite magnetic core material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205938A (en) * | 2016-08-17 | 2016-12-07 | 安徽德信电气有限公司 | A kind of nano magnetic core material |
| CN109754982A (en) * | 2018-12-04 | 2019-05-14 | 天长市昭田磁电科技有限公司 | Magnetic core of compound magnetic material |
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Application publication date: 20150429 |