CN105976967A - Iron-silicon alloy magnetic powder core material having high direct-current superposition property - Google Patents
Iron-silicon alloy magnetic powder core material having high direct-current superposition property Download PDFInfo
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- CN105976967A CN105976967A CN201610149066.6A CN201610149066A CN105976967A CN 105976967 A CN105976967 A CN 105976967A CN 201610149066 A CN201610149066 A CN 201610149066A CN 105976967 A CN105976967 A CN 105976967A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
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Abstract
The invention discloses an iron-silicon alloy magnetic powder core material having high direct-current superposition property. The iron-silicon alloy magnetic powder core material is prepared from the following raw materials in parts by weight: 48-53 parts of iron trioxide, 20-23 parts of manganese oxide, 16-18 parts of zinc oxide, 6-8 parts of silicon dioxide, 23-25 parts of nickel oxide, 4-5 parts of magnetic carbon powder, 2-3 parts of nanometer lanthanum oxide, 1-2 parts of mica powder, 0.5-0.7 part of zinc stearate, 2-3 parts of aluminium nitride, 0.4-0.6 part of butyl oleate, 0.7-1 part of polyethylene glycol, 0.2-0.3 part of polydimethylsiloxane, 0.5-0.6 part of propylene glycol alginate, 2.5-3 parts of a silane coupling agent kh550, 2.6-3.3 parts of polyamide resin, 1.5-2 parts of sodium silicate, 2-3 parts of silica sol, 1.3-2 parts of polyvinyl alcohol, and proper deionized water. The magnetic core material prepared by the invention has the advantages of being high in magnetic energy product, steady in magnetism and good in direct-current superposition property; simultaneously, low-temperature sintering can be realized; the process is simplified; and energy is saved.
Description
Technical field
The present invention relates to Ferrite Material technical field, particularly relate to the ferrum-silicon alloy magnetic powder core material that a kind of DC superposition characteristic is high.
Background technology
Along with developing rapidly of electronic information technology, metal magnetic powder core is widely used in the fields such as line filter, outputting inductance and Switching Power Supply, metal magnetic powder core be magnetic powder particles is mixed homogeneously with non magnetic dielectric after a compressing class soft magnetic materials, be broadly divided into ferrocart core, ferrum silica magnetic particle core, high magnetic flux powder core, Fe-Si-Al magnetic core, ferrum tantnickel powder core, ferrum nickel molybdenum powder core and amorphous nano-crystalline powder core.After being mixed with dielectric by ferromagnetic powder granule, carry out suppressing and a kind of soft-magnetic composite material of obtaining is referred to as metal magnetic powder core.Ferromagnetic powder granule after insulating wrapped at its Surface Creation one layer of dielectric insulating film, can effectively improve the resistivity of powder core, reduce eddy-current loss, therefore under metal magnetic powder core is applicable to higher frequency, metal magnetic powder core has become as the ingredient that soft magnetic materials is important, there is the advantages such as higher saturation induction density, good frequency characteristic and permanent magnetic conduction due to it, in modern science and technology field, powder core is widely used in the equipment such as telecommunications, radar, on and off switch as inductance filter, choking-winding.Along with communication technology and the digitized development of electronic product, soft magnetic ferrite and element are proposed new requirement, telecommunications industry needs FERRITE CORE to have low core loss and high magnetic permeability now, to meet the miniaturization of present electric equipment and high efficiency requirement, existing magnetic core is difficult to meet above-mentioned requirements, at present, continuous upgrading along with circuit, electronic component in circuit requires that electric current is higher, and after needing pcrmeability height, saturation flux density height, extra current bias field, pcrmeability declines little magnetics.Metallic magnet opposing ferrite magnet has higher saturation flux density, and metal material is taken as the material of main part of magnet as new use object.But miniaturization, the lightening development along with electronic product, it is desirable to electronic component miniaturization the most therewith, lightening.However as the miniaturization of magnet, in metal material often there is the problem that insulation impedance is low, mechanical strength is low in the material of high magnetic permeability.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that the ferrum-silicon alloy magnetic powder core material that a kind of DC superposition characteristic is high.
The present invention is achieved by the following technical solutions:
The ferrum-silicon alloy magnetic powder core material that a kind of DC superposition characteristic is high, it is made up of the raw material of following weight portion: iron sesquioxide 48-53, manganese oxide 20-23, zinc oxide 16-18, silicon dioxide 6-8, nickel oxide 23-25, magnetic carbon powder 4-5, nano lanthanum oxide 2-3, mica powder 1-2, zinc stearate 0.5-0.7, aluminium nitride 2-3, butyl oleate 0.4-0.6, Polyethylene Glycol 0.7-1, polydimethylsiloxane 0.2-0.3, alginic acid diol ester 0.5-0.6, silane coupler kh5502.5-3, polyamide 2.6-3.3, sodium silicate 1.5-2, Ludox 2-3, polyvinyl alcohol 1.3-2, deionized water is appropriate.
The ferrum-silicon alloy magnetic powder core material that described a kind of DC superposition characteristic is high, is made up of step in detail below:
(1) iron sesquioxide, silicon dioxide, manganese oxide, zinc oxide and nickel oxide are mixed, it is then added in ball mill wear into fine powder, silane coupler kh550 deionized water is diluted to the solution that solubility is 4-6%, add butyl oleate, Polyethylene Glycol, polydimethylsiloxane and alginic acid diol ester mix homogeneously, magnetic carbon powder and nano lanthanum oxide is added with 600-800 rev/min of lower dispersed with stirring 6-10min when being heated to 50-60 DEG C, standby after cooling；
(2) nanometer of above-mentioned preparation is mixed liquid to spray in fine powder, then fine powder is placed in baking oven at 110-120 DEG C baking 30-45min, at 230-250 DEG C, then dry 7-10min, be then cooled to room temperature；
(3) it is heated to melting by polyamide; add mica powder, zinc stearate and aluminium nitride to stir; in the product mixing and stirring prepared with step (2); it is added in comminutor make 100-200 mesh afterwards and accounts for 30Wt%; 200-300 mesh accounts for 40Wt%; 300-400 mesh accounts for 20Wt%, and more than 400 mesh accounting for the ratio of 10Wt%, to carry out particle diameter proportioning standby；
(4) sodium silicate is added the deionized water dilution of 10 times amount; add Ludox, polyvinyl alcohol stirs, and granule prepared by step (3) is added thereto evacuation and makes vacuum exceed-0.9 atmospheric pressure, keep 3 minutes; rear taking-up; dry, put into mould, be orientated in magnetic field and be pressed into base substrate under 1.5-2GPa; sinter at 900-1000 DEG C under argon shield; insulation 2-2.5h, is tempered 1-1.5h at 700-750 DEG C, the most available.
nullThe invention have the advantage that metal magnetic mixed grinding is become fine powder by the present invention，Make to be uniformly dispersed between composition，Stable performance，And itself is had anticorrosive property、High temperature oxidation resistance and the lanthana of heat stability and magnetic carbon powder are coated in the mechanical property that core material is greatly improved、Shock resistance、High tenacity and adhesion strength，Insulation adhesive material is used to be coated on its surface again，Strengthen the bond strength between granule，And intercept intergranular eddy current，Reduce the eddy-current loss of core material，Do not affect the high magnetic flux of magnetic core itself，Good stability of the dimension when using different particle diameter proportionings to make sintering，Volume shrinkage is little，Dimensioning accuracy is high，Finally make further insulation processing，Insulating properties is improve in the case of not changing pcrmeability，Reduce core loss，It is high that core material prepared by the present invention has energy product，Magnetic stability，The advantage that DC stacked performance is good，Low-temperature sintering can be realized simultaneously，Simplify technique，Save the energy.
Detailed description of the invention
The ferrum-silicon alloy magnetic powder core material that a kind of DC superposition characteristic is high, is made up of the raw material of following weight portion (kilogram): iron sesquioxide 48, manganese oxide 20, zinc oxide 16, silicon dioxide 6, nickel oxide 23, magnetic carbon powder 4, nano lanthanum oxide 2, mica powder 1, zinc stearate 0.5, aluminium nitride 2, butyl oleate 0.4, Polyethylene Glycol 0.7, polydimethylsiloxane 0.2, alginic acid diol ester 0.5, silane coupler kh5502.5, polyamide 2.6, sodium silicate 1.5, Ludox 2, polyvinyl alcohol 1.3, deionized water are appropriate.
The ferrum-silicon alloy magnetic powder core material that described a kind of DC superposition characteristic is high, is made up of step in detail below:
(1) iron sesquioxide, silicon dioxide, manganese oxide, zinc oxide and nickel oxide are mixed, it is then added in ball mill wear into fine powder, silane coupler kh550 deionized water is diluted to the solution that solubility is 4%, add butyl oleate, Polyethylene Glycol, polydimethylsiloxane and alginic acid diol ester mix homogeneously, magnetic carbon powder and nano lanthanum oxide is added with 600 revs/min of lower dispersed with stirring 6min when being heated to 50 DEG C, standby after cooling；
(2) nanometer of above-mentioned preparation is mixed liquid to spray in fine powder, then fine powder is placed in baking oven at 110 DEG C baking 30min, at 230 DEG C, then dry 7min, be then cooled to room temperature；
(3) it is heated to melting by polyamide; add mica powder, zinc stearate and aluminium nitride to stir; in the product mixing and stirring prepared with step (2); it is added in comminutor make 100 mesh afterwards and accounts for 30Wt%; 200 mesh account for 40Wt%; 300 mesh account for 20Wt%, and more than 400 mesh accounting for the ratio of 10Wt%, to carry out particle diameter proportioning standby；
(4) sodium silicate is added the deionized water dilution of 10 times amount; add Ludox, polyvinyl alcohol stirs, and granule prepared by step (3) is added thereto evacuation and makes vacuum exceed an atmospheric pressure, keep 3 minutes; rear taking-up; dry, put into mould, be orientated in magnetic field and be pressed into base substrate under 1.5GPa; sinter at 900 DEG C under argon shield; insulation 2h, is tempered 1h at 700 DEG C, the most available.
The soft magnetic ferrite prepared according to specific embodiment, carries out performance test to it, and result is as follows:
Tensile strength is 156N, and the intensity of magnetization is 263Am2/ kg, maximum magnetic flux core loss (100Kc, 200mT): 320KW/m3, saturation induction density is 1.1T, and coercivity is 7.7Oe, and Curie temperature is ＞ 240 DEG C.
Claims (2)
1. the ferrum-silicon alloy magnetic powder core material that a DC superposition characteristic is high, it is characterized in that, it is made up of the raw material of following weight portion: iron sesquioxide 48-53, manganese oxide 20-23, zinc oxide 16-18, silicon dioxide 6-8, nickel oxide 23-25, magnetic carbon powder 4-5, nano lanthanum oxide 2-3, mica powder 1-2, zinc stearate 0.5-0.7, aluminium nitride 2-3, butyl oleate 0.4-0.6, Polyethylene Glycol 0.7-1, polydimethylsiloxane 0.2-0.3, alginic acid diol ester 0.5-0.6, silane coupler kh5502.5-3, polyamide 2.6-3.3, sodium silicate 1.5-2, Ludox 2-3, polyvinyl alcohol 1.3-2, deionized water is appropriate.
The ferrum-silicon alloy magnetic powder core material that a kind of DC superposition characteristic is high, it is characterised in that be made up of step in detail below:
(1) iron sesquioxide, silicon dioxide, manganese oxide, zinc oxide and nickel oxide are mixed, it is then added in ball mill wear into fine powder, silane coupler kh550 deionized water is diluted to the solution that solubility is 4-6%, add butyl oleate, Polyethylene Glycol, polydimethylsiloxane and alginic acid diol ester mix homogeneously, magnetic carbon powder and nano lanthanum oxide is added with 600-800 rev/min of lower dispersed with stirring 6-10min when being heated to 50-60 DEG C, standby after cooling；
(2) nanometer of above-mentioned preparation is mixed liquid to spray in fine powder, then fine powder is placed in baking oven at 110-120 DEG C baking 30-45min, at 230-250 DEG C, then dry 7-10min, be then cooled to room temperature；
(3) it is heated to melting by polyamide; add mica powder, zinc stearate and aluminium nitride to stir; in the product mixing and stirring prepared with step (2); it is added in comminutor make 100-200 mesh afterwards and accounts for 30Wt%; 200-300 mesh accounts for 40Wt%; 300-400 mesh accounts for 20Wt%, and more than 400 mesh accounting for the ratio of 10Wt%, to carry out particle diameter proportioning standby；
(4) sodium silicate is added the deionized water dilution of 10 times amount; add Ludox, polyvinyl alcohol stirs, and granule prepared by step (3) is added thereto evacuation and makes vacuum exceed-0.9 atmospheric pressure, keep 3 minutes; rear taking-up; dry, put into mould, be orientated in magnetic field and be pressed into base substrate under 1.5-2GPa; sinter at 900-1000 DEG C under argon shield; insulation 2-2.5h, is tempered 1-1.5h at 700-750 DEG C, the most available.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610149066.6A CN105976967A (en) | 2016-03-16 | 2016-03-16 | Iron-silicon alloy magnetic powder core material having high direct-current superposition property |
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| CN201610149066.6A CN105976967A (en) | 2016-03-16 | 2016-03-16 | Iron-silicon alloy magnetic powder core material having high direct-current superposition property |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108329021A (en) * | 2017-12-25 | 2018-07-27 | 日照亿鑫电子材料有限公司 | Low-frequency current sensor core material and preparation method thereof |
| CN109851345A (en) * | 2018-12-04 | 2019-06-07 | 天长市昭田磁电科技有限公司 | Ferrite core material processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005259751A (en) * | 2004-03-09 | 2005-09-22 | Neomax Co Ltd | Ferrite magnet and its manufacturing method |
| CN103172359A (en) * | 2013-03-25 | 2013-06-26 | 海宁联丰磁业股份有限公司 | Manganese zinc power ferrite magnetic powder core and preparation method thereof |
| CN104891982A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | Rare earth high-magnetic-permeability soft magnetic ferrite and preparation method thereof |
| CN105097168A (en) * | 2015-08-10 | 2015-11-25 | 天长市昭田磁电科技有限公司 | Magnetic core material to which rare earth element is added |
-
2016
- 2016-03-16 CN CN201610149066.6A patent/CN105976967A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005259751A (en) * | 2004-03-09 | 2005-09-22 | Neomax Co Ltd | Ferrite magnet and its manufacturing method |
| CN103172359A (en) * | 2013-03-25 | 2013-06-26 | 海宁联丰磁业股份有限公司 | Manganese zinc power ferrite magnetic powder core and preparation method thereof |
| CN104891982A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | Rare earth high-magnetic-permeability soft magnetic ferrite and preparation method thereof |
| CN105097168A (en) * | 2015-08-10 | 2015-11-25 | 天长市昭田磁电科技有限公司 | Magnetic core material to which rare earth element is added |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108329021A (en) * | 2017-12-25 | 2018-07-27 | 日照亿鑫电子材料有限公司 | Low-frequency current sensor core material and preparation method thereof |
| CN109851345A (en) * | 2018-12-04 | 2019-06-07 | 天长市昭田磁电科技有限公司 | Ferrite core material processing method |
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Application publication date: 20160928 |
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