CN104134507A - Vanadium-based rare earth ferromagnetic core material - Google Patents
Vanadium-based rare earth ferromagnetic core material Download PDFInfo
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- CN104134507A CN104134507A CN201410380976.6A CN201410380976A CN104134507A CN 104134507 A CN104134507 A CN 104134507A CN 201410380976 A CN201410380976 A CN 201410380976A CN 104134507 A CN104134507 A CN 104134507A
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Abstract
The invention discloses a vanadium-based rare earth ferromagnetic core material which comprises a main material and an additive. The main material comprises, by the molar ratio, 70.5-75 mol of Fe2O3, 15-20 mol of manganese oxide, 10-12 mol of zinc oxide, 0.3-0.4 mol of copper powder and 0.1-0.2 mol of vanadium. The additive comprises, accounting for the weight of the ferromagnetic core material, 40-50 ppm of nanocarbon and 900-1000 ppm of vanadium-based rare earth composite magnetic conduction powder. The rare earth composite magnetic conduction powder added in the vanadium-based rare earth ferromagnetic core material is high in magnetic energy product, the magnetism is stable, the mechanical performance of the ferromagnetic core material can be obviously improved, and the porosity is lowered.
Description
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Technical field
The present invention relates generally to oxidate magnetic material and manufactures field, relates in particular to a kind of vanadium base Rare-earth Iron core material.
Background technology
Along with the communication technology and the digitized development of electronic product; soft magnetic ferrite and element have been proposed to new requirement; high-performance high magnetic 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.Telecommunications industry needs FERRITE CORE to have low core loss and high magnetic permeability now, and to meet microminiaturization and the high efficiency requirement of present electric equipment, existing magnetic core is difficult to meet above-mentioned requirements;
Its magnetic energy product of the permanent magnetic material that rare earth makes can reach 150 times of carbon steel, 3～5 times of Al-Ni-Co permanent magnet material, 8～10 times of permanent-magnet ferrite, and temperature coefficient is low, magnetic stability, coercive force is up to 800 kilo-ampere/rice.Be mainly used in the magnetic system of low speed torque motor, actuating motor, transducer, magnetic bearing etc.Nd-Fe-Bo permanent magnet material is third generation rare earth permanent-magnetic material, and its remanent magnetism, coercive force and maximum magnetic energy product are higher than the former, non-friable, has good mechanical performance, and alloy density is low, is conducive to lightness, slimming, the small-sized and subminaturization of magnetic element.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, and a kind of vanadium base Rare-earth Iron core material is provided.
The present invention is achieved by the following technical solutions:
A kind of vanadium base Rare-earth Iron core material, it comprises major ingredient and additive, and described major ingredient comprises according to mol ratio: the zinc oxide of the Fe2O3 of 70.5-75 mol, the manganese oxide of 15-20 mol, 10-12 mol, the copper powder of 0.3-0.4 mol, the vanadium of 0.1-0.2 mol; Additive comprises according to the weight ratio meter that accounts for described ferromagnetic core material: the nano-sized carbon of 40-50ppm, the vanadium base rare earth compounded magnetic conductive powder of 900-1000ppm;
The preparation of described vanadium base rare earth compounded magnetic conductive powder comprises the following steps:
(1) preparation of vanadium colloidal sol:
Pentaerythrite being joined in 100-200 times of water, stir, is a liquid;
By vanadic oxide heat fused, insulation 20-30min, adds above-mentioned a liquid, and with magnetic stirring apparatus, 600-1000 rev/min of dispersed with stirring 3-5 minute, obtains described vanadium colloidal sol;
(2) polyvinylpyrrolidone is joined in lanthanum chloride solution, at 60-80 DEG C, be uniformly mixed 10-20 minute, add ammonium bicarbonate aqueous solution, insulation 3-5h, adds above-mentioned vanadium colloidal sol, is stirred to normal temperature, centrifugal dehydration, 200 DEG C of dry 30-40 minute of 100-, calcine 6-10 hour at 300-400 DEG C, obtain described rare earth compounded magnetic conductive powder;
The concentration of described lanthanum chloride solution is 0.8-2mol/L; The concentration of ammonium bicarbonate aqueous solution is that 20-30%, consumption are the 30-40% of lanthanum chloride solution weight;
Described polyvinylpyrrolidone and the mol ratio of lanthanum chloride are 1-2:1;
Described vanadic oxide and the mass ratio of lanthanum chloride are 60-100:1;
Described pentaerythrite, the mass ratio of vanadic oxide are 2-3:60-70.
A preparation method for vanadium base Rare-earth Iron core material, comprises the following steps:
(1) above-mentioned major ingredient is sent into blending tank, 2500-3000 rev/min is stirred mixed 2-4 hour, sends into rotary furnace pre-burning, control 400 DEG C of temperature 300-, the pre-burning time is 2-4 hour, sends into grinding pot, adopt the alcohol water blend that abrasive media is 15-20%, being ground to fineness is 40-100 μ m;
(2) additive is sent into grinding pot, adopt the alcohol water blend that abrasive media is 15-20%, be wherein added with the aluminium triphosphate that is equivalent to weight of additive 1-2%, being ground to fineness is 20-30 μ m;
(3) above-mentioned each raw material after treatment is mixed, spraying is dry, is pressed into base, and sintering, obtains described vanadium base Rare-earth Iron core material.
Advantage of the present invention is:
Vanadium base rare earth compounded magnetic conductive powder good weatherability, magnetic energy product that ferromagnetic core material of the present invention adds are high, and magnetic stability can obviously improve the mechanical performance of ferromagnetic core material, reduces the porosity.
Embodiment
Embodiment 1
A kind of vanadium base Rare-earth Iron core material, is characterized in that it comprises major ingredient and additive, and described major ingredient comprises according to mol ratio: the zinc oxide of the Fe2O3 of 70.5 mol, the manganese oxide of 20 mol, 12 mol, the copper powder of 0.3 mol, the vanadium of 0.2 mol; Additive comprises according to the weight ratio meter that accounts for described ferromagnetic core material: the nano-sized carbon of 50ppm, the vanadium base rare earth compounded magnetic conductive powder of 1000ppm;
The preparation of described vanadium base rare earth compounded magnetic conductive powder comprises the following steps:
(1) preparation of vanadium colloidal sol:
Pentaerythrite being joined in 100 times of water, stir, is a liquid;
By vanadic oxide heat fused, insulation 30min, adds above-mentioned a liquid, and with magnetic stirring apparatus, 600-1000 rev/min of dispersed with stirring 5 minutes, obtains described vanadium colloidal sol;
(2) polyvinylpyrrolidone is joined in lanthanum chloride solution, at 80 DEG C, be uniformly mixed 20 minutes, add ammonium bicarbonate aqueous solution, insulation 5h, adds above-mentioned vanadium colloidal sol, is stirred to normal temperature, centrifugal dehydration, 200 DEG C dry 40 minutes, calcine 10 hours at 400 DEG C, obtain described rare earth compounded magnetic conductive powder;
The concentration of described lanthanum chloride solution is 0.8mol/L; The concentration of ammonium bicarbonate aqueous solution is 30%, consumption is 40% of lanthanum chloride solution weight;
Described polyvinylpyrrolidone and the mol ratio of lanthanum chloride are 2:1;
Described vanadic oxide and the mass ratio of lanthanum chloride are 100:1;
Described pentaerythrite, the mass ratio of vanadic oxide are 3:70.
A preparation method for vanadium base Rare-earth Iron core material, comprises the following steps:
(1) above-mentioned major ingredient is sent into blending tank, 3000 revs/min are stirred mixed 2 hours, send into rotary furnace pre-burning, control 400 DEG C of temperature, and the pre-burning time is 2 hours, sends into grinding pot, adopts the alcohol water blend that abrasive media is 20%, and being ground to fineness is 100 μ m;
(2) additive is sent into grinding pot, adopt the alcohol water blend that abrasive media is 20%, be wherein added with the aluminium triphosphate that is equivalent to weight of additive 2%, being ground to fineness is 30 μ m;
(3) above-mentioned each raw material after treatment is mixed, spraying is dry, is pressed into base, and sintering, obtains described vanadium base Rare-earth Iron core material.
Through detection, the basic mechanical design feature index that the product of above-described embodiment 1 gained reaches:
The saturation induction density of magnetic core of the present invention can reach 15000 Gausses, and saturation flux rate density is 470mT, and Curie temperature is higher than 240 DEG C, resistivity 6.4 Ω .m.
Claims (2)
1. a vanadium base Rare-earth Iron core material, it is characterized in that it comprises major ingredient and additive, described major ingredient comprises according to mol ratio: the zinc oxide of the Fe2O3 of 70.5-75 mol, the manganese oxide of 15-20 mol, 10-12 mol, the copper powder of 0.3-0.4 mol, the vanadium of 0.1-0.2 mol; Additive comprises according to the weight ratio meter that accounts for described ferromagnetic core material: the nano-sized carbon of 40-50ppm, the vanadium base rare earth compounded magnetic conductive powder of 900-1000ppm;
The preparation of described vanadium base rare earth compounded magnetic conductive powder comprises the following steps:
(1) preparation of vanadium colloidal sol:
Pentaerythrite being joined in 100-200 times of water, stir, is a liquid;
By vanadic oxide heat fused, insulation 20-30min, adds above-mentioned a liquid, and with magnetic stirring apparatus, 600-1000 rev/min of dispersed with stirring 3-5 minute, obtains described vanadium colloidal sol;
(2) polyvinylpyrrolidone is joined in lanthanum chloride solution, at 60-80 DEG C, be uniformly mixed 10-20 minute, add ammonium bicarbonate aqueous solution, insulation 3-5h, adds above-mentioned vanadium colloidal sol, is stirred to normal temperature, centrifugal dehydration, 200 DEG C of dry 30-40 minute of 100-, calcine 6-10 hour at 300-400 DEG C, obtain described rare earth compounded magnetic conductive powder;
The concentration of described lanthanum chloride solution is 0.8-2mol/L; The concentration of ammonium bicarbonate aqueous solution is that 20-30%, consumption are the 30-40% of lanthanum chloride solution weight;
Described polyvinylpyrrolidone and the mol ratio of lanthanum chloride are 1-2:1;
Described vanadic oxide and the mass ratio of lanthanum chloride are 60-100:1;
Described pentaerythrite, the mass ratio of vanadic oxide are 2-3:60-70.
2. a preparation method for vanadium base Rare-earth Iron core material as claimed in claim 1, is characterized in that comprising the following steps:
(1) above-mentioned major ingredient is sent into blending tank, 2500-3000 rev/min is stirred mixed 2-4 hour, sends into rotary furnace pre-burning, control 400 DEG C of temperature 300-, the pre-burning time is 2-4 hour, sends into grinding pot, adopt the alcohol water blend that abrasive media is 15-20%, being ground to fineness is 40-100 μ m;
(2) additive is sent into grinding pot, adopt the alcohol water blend that abrasive media is 15-20%, be wherein added with the aluminium triphosphate that is equivalent to weight of additive 1-2%, being ground to fineness is 20-30 μ m;
(3) above-mentioned each raw material after treatment is mixed, spraying is dry, is pressed into base, and sintering, obtains described vanadium base Rare-earth Iron core material.
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| CN201410380976.6A CN104134507A (en) | 2014-08-05 | 2014-08-05 | Vanadium-based rare earth ferromagnetic core material |
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| CN201410380976.6A CN104134507A (en) | 2014-08-05 | 2014-08-05 | Vanadium-based rare earth ferromagnetic core material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060874A (en) * | 2015-08-10 | 2015-11-18 | 天长市昭田磁电科技有限公司 | Manganese zinc ferrite material for increasing electrical resistivity |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4864498A (en) * | 1971-12-14 | 1973-09-06 | ||
| CN102976741A (en) * | 2012-11-23 | 2013-03-20 | 天长市昭田磁电科技有限公司 | Preparation method of manganese zinc MnZn soft magnetic ferrite material containing modified nanocarbon |
| CN103382110A (en) * | 2013-06-26 | 2013-11-06 | 蚌埠市高华电子有限公司 | Mn-Zn soft-magnetic ferrite material with high magnetic permeability and preparation method thereof |
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- 2014-08-05 CN CN201410380976.6A patent/CN104134507A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4864498A (en) * | 1971-12-14 | 1973-09-06 | ||
| CN102976741A (en) * | 2012-11-23 | 2013-03-20 | 天长市昭田磁电科技有限公司 | Preparation method of manganese zinc MnZn soft magnetic ferrite material containing modified nanocarbon |
| CN103382110A (en) * | 2013-06-26 | 2013-11-06 | 蚌埠市高华电子有限公司 | Mn-Zn soft-magnetic ferrite material with high magnetic permeability and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060874A (en) * | 2015-08-10 | 2015-11-18 | 天长市昭田磁电科技有限公司 | Manganese zinc ferrite material for increasing electrical resistivity |
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Application publication date: 20141105 |