CN103426580A - Composite magnetic powder core and preparation method thereof - Google Patents

Composite magnetic powder core and preparation method thereof Download PDF

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CN103426580A
CN103426580A CN201310411772XA CN201310411772A CN103426580A CN 103426580 A CN103426580 A CN 103426580A CN 201310411772X A CN201310411772X A CN 201310411772XA CN 201310411772 A CN201310411772 A CN 201310411772A CN 103426580 A CN103426580 A CN 103426580A
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powder
stir
powder core
composite magnetic
passivation
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CN103426580B (en
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彭晓领
李静
徐靖才
王新庆
金顶峰
洪波
金红晓
葛洪良
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China Jiliang University
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彭晓领
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Abstract

The invention relates to a composite magnetic powder core and a preparation method of the composite magnetic powder core. According to the technical scheme, nanometer ferrite particles with even size are prepared on the surface of soft magnetic alloy powder through a hydrothermal method in a root-positioning mode, and a novel ferrite composite magnetic powder core is prepared through the pressing and thermal processing technology. The composite magnetic powder core and the manufacturing method of the composite magnetic powder core have the advantages that due to the fact that manganese zinc ferrite and nickel zinc ferrite are prepared through a hydrothermal method and a root position method, nanometer particles with controllable and even size can be prepared conveniently; the ferrite can be used as an insulated coating agent of the soft magnetic alloy powder, the defect that magnetic performance of a substrate is reduced when traditional nonmagnetic substances are used as the coating agent are overcome, and high magnetic conductivity and saturation magnetization strength can be obtained.

Description

A kind of composite magnetic powder core and preparation method thereof
Technical field
The present invention relates to a kind of composite magnetic powder core and preparation method thereof, belong to field of material preparation.
Background technology
Soft magnetic material is the class material with ferromagnetic ferromagnetism or ferrimagnetism, easily also easily demagnetization of magnetization.The kind of soft magnetic material is numerous, can be divided into metal soft magnetic material, soft magnetic ferrite and powder core.Soft magnetic ferrites have high resistivity, therefore with the obvious advantage in the medium-high frequency section, but owing to being the ferrimagnetism material, so saturation magnetization is lower, can't meet the power requirement that electronic equipment increases day by day, therefore in numerous high-grade, precision and advanced fields, can't apply.The soft magnetic metal advantage is that saturation magnetization is high, but has the outstanding shortcoming that resistivity is low, and while causing using under high frequency, eddy current loss is very big, and magnetic permeability sharply descends, and therefore can't under high frequency, use, and this is fatal shortcoming for soft magnetic material.
Powder core is to be mixed a kind of soft magnetic material that compacting forms with dielectric by the ferromagnetism powder.Because ferromagnetic particle is very little, by non magnetic electrical insulating film material, separated again, therefore, can completely cut off eddy current on the one hand, material is applicable to upper frequency; Due to the channel effect between particle, cause material to there is low permeability and permanent permeance on the other hand; Because particle size is little, basically do not collect the skin phenomenon again, magnetic permeability is also just comparatively stable with the variation of frequency.Be mainly used in high-frequency inductor.The magnetic electricity performance of powder core depends primarily on the permeability of powder material, the size and shape of powder, their activity coefficient, content, briquetting pressure and the Technology for Heating Processing etc. of dielectric.Soft magnetic metal powder core, both retained some good characteristics of soft magnetic metal and ferrite soft magnetic, overcome to greatest extent again some defects of the two simultaneously, is the best a kind of soft magnetic material of combination property.
Powder core preparation process commonly used comprises: powder passivation, insulating wrapped, compacting, heat treatment etc.Insulating wrapped is a most important link in the soft-magnetic powder core preparation process, and the quality of coating layer directly has influence on the quality of soft-magnetic powder core magnetic property.Coating medium commonly used has: the high resistivity media such as kaolin, silica.This class medium can effectively improve the system insulation property, reduces the eddy current loss under high frequency.But it is non magnetic that this type of medium is all, when improving material high-frequency work characteristic, reduced the magnetic property of matrix, comprise magnetic permeability and the magnetization.
In the preparation process for magnetic powder core that a series of patents such as Chinese patent 97102244.5,200480021670.6,200680001781.2 adopt, insulating barrier is namagnetic substance, they add the reduction that has caused the powder core magnetic permeability.
Chinese patent 200610124964.2,201310096126.9 is all that the mode that adopts the iron-based magnetic directly to mix with ferrite powder obtains powder core.Manganese-zinc ferrite in patent 200610124964.2 is not introduced the preparation method, and is of a size of 200 orders, suitable with the granular size of iron-based magnetic, can't magnetic effectively be coated.201310096126.9 of patents are to adopt sol-gal process to obtain ferrite particle.The place of the present invention and their differences is: the present invention adopts hydro thermal method directly at soft-magnetic alloy powder superficial growth ferrite particle, and the ferrite particle dimensional uniformity of acquisition is good, and covered effect is good.
Chinese patent 201010297482.3 adopts controls oxidizing process at ferrous powder granules surface in situ generation Fe 3O 4Shell, then be mixed with soft-magnetic powder core with appropriate silicones, can weaken to a certain extent the infringement of non-magnetic media to the matrix magnetic property.This invention is the method by chemical reaction, and original position generates the magnetic dielectric, and the parameter of chemical reaction should strictly be controlled.The place that the present invention distinguishes with it is: the present invention be by hydro-thermal reaction at soft-magnetic alloy powder superficial growth ferrite particle, the ferrite particle of acquisition has excellent magnetic characteristics.
Summary of the invention
For the problem of current existence, the present invention adopts hydro thermal method to prepare the uniform Nano-Ferrite Particle of particle size at the soft-magnetic alloy powder surface in situ, and repressed, Technology for Heating Processing, prepare the novel ferrite composite magnetic powder core.
Technical scheme of the present invention is as follows: (a) passivation: get a certain amount of phosphoric acid, heating water bath to 85 ℃.Slowly add the magnetically soft alloy that needs passivation, stirring and making the two abundant hybrid reaction, passivation 30min, phosphoric acid consumption is 0.2 wt.% ~ 6 wt.%.(b) pioneer's liquid is prepared: by Fe 3+Salt, Zn 2+Salt and Ni 2+(or Mn 2+) salt Ni in molar ratio x Zn 1- x Fe 2O 4(or Mn x Zn 1- x Fe 2O 4, x=0.2 ~ 0.8), be distributed in the ethylene glycol of 50ml Fe 3+Salt is fixed as 0.5mmol, stirs until dissolve fully.Add 1.54gCH 3COONH 4With the 0.8ml polyethylene glycol, stir 30 minutes.(c) the powder original position coats: the soft-magnetic alloy powder after pioneer's liquid and passivation is transferred in the stainless steel autoclave with agitating function to 160 ℃ ~ 220 ℃ lower agitating heating 2h 24h.Ethanol washing several for products therefrom, the drying under 80 ℃.The magnetically soft alloy consumption can determine according to ferritic theoretical growing amount, and making magnetically soft alloy in product is 70 ~ 99.9wt.%, and ferrite is 0.1 ~ 30wt.%.(d) add bonding agent: the W-6C that gets 0.1 ~ 4wt.% of the mixed-powder quality that step (c) obtains, pour in 50ml acetone and stir and make its dissolving, be poured into above-mentioned mixed-powder under 75 ℃ of water bath condition in, fully stir 1.5-2h and evenly mix to mixture evaporate to dryness, powder.(e) moulding: powder is pressed into to fine and close annulus under 0.4 ~ 1.9GPa pressure.(f) heat treatment: the heat treatment of being annealed in the protective atmosphere of nitrogen or argon gas, the internal stress produced to eliminate compacting, heat treatment temperature is 480 ~ 700 ℃.
Advantage of the present invention is: (1), owing to adopting the hydro thermal method in-situ method to prepare MnZn, nickel-zinc ferrite, can prepare even, the controlled nano particle of particle size size easily; (2) ferrite is as the insulating wrapped agent of soft-magnetic alloy powder, and the shortcoming that causes the matrix magnetic property to reduce while having overcome traditional namagnetic substance as covering, can obtain higher magnetic permeability and saturation magnetization.
Embodiment
Embodiment 1
Get 0.2g phosphoric acid, heating water bath to 85 ℃.Slowly add the 100gFeSiAl magnetically soft alloy, stir and make the two abundant hybrid reaction, passivation 30min.By FeCl 3, NiCl 2Salt and ZnCl 2Salt is Ni in molar ratio x Zn 1- x Fe 2O 4( x=0.8) be distributed in the ethylene glycol of 50ml FeCl 3For 0.5mmol, stir until dissolve fully.Add 1.54gCH 3COONH 4With the 0.8ml polyethylene glycol, stir 30 minutes.
Soft-magnetic alloy powder after pioneer's liquid and passivation is transferred in the stainless steel autoclave with agitating function to 160 ℃ of lower agitating heating 24h.Ethanol washing several for products therefrom, the drying under 80 ℃.
Get the W-6C of 0.1wt.%, pour in 50ml acetone to stir and make its dissolving, under 75 ℃ of water bath condition, be poured into above-mentioned mixed-powder, fully stir 1.5h and evenly mix to mixture evaporate to dryness, powder.
Powder is pressed into to fine and close annulus under 1.9GPa pressure.The heat treatment of being annealed in the protective atmosphere of nitrogen, the internal stress produced to eliminate compacting, heat treatment temperature is 700 ℃.
Embodiment 2
Get the phosphoric acid of 0.6g, heating water bath to 85 ℃.Slowly add the 10gFeSi magnetically soft alloy, stir and make the two abundant hybrid reaction, passivation 30min.By Fe(NO 3) 3, Ni(NO 3) 2And Zn(NO 3) 2Ni in molar ratio x Zn 1- x Fe 2O 4( x=0.5) be distributed in the ethylene glycol of 50ml Fe(NO 3) 3Salt is 0.5mmol, stirs until dissolve fully.Add 1.54gCH 3COONH 4With the 0.8ml polyethylene glycol, stir 30 minutes.
Soft-magnetic alloy powder after pioneer's liquid and passivation is transferred in the stainless steel autoclave with agitating function to 180 ℃ of lower agitating heating 12h.Ethanol washing several for products therefrom, the drying under 80 ℃.
Get the W-6C of 4wt.%, pour in 50ml acetone to stir and make its dissolving, under 75 ℃ of water bath condition, be poured into above-mentioned mixed-powder, fully stir 2h and evenly mix to mixture evaporate to dryness, powder.
Powder is pressed into to fine and close annulus under 1.4GPa pressure.The heat treatment of being annealed in the protective atmosphere of argon gas, the internal stress produced to eliminate compacting, heat treatment temperature is 640 ℃.
Embodiment 3
Get the phosphoric acid of 0.09g, heating water bath to 85 ℃.Slowly add the 2.8gFeNi magnetically soft alloy, stir and make the two abundant hybrid reaction, passivation 30min.By Fe 2(SO 4) 3, Ni SO 4And ZnSO 4Ni in molar ratio x Zn 1- x Fe 2O 4( x=0.6) be distributed in the ethylene glycol of 500ml Fe 2(SO 4) 3For 5mmol, stir until dissolve fully.Add 15.4gCH 3COONH 4With the 8ml polyethylene glycol, stir 30 minutes.
Soft-magnetic alloy powder after pioneer's liquid and passivation is transferred in the stainless steel autoclave with agitating function to 200 ℃ of lower agitating heating 8h.Ethanol washing several for products therefrom, the drying under 80 ℃.
Get the W-6C of 2wt.%, pour in 50ml acetone to stir and make its dissolving, under 75 ℃ of water bath condition, be poured into above-mentioned mixed-powder, fully stir 2h and evenly mix to mixture evaporate to dryness, powder.
Powder is pressed into to fine and close annulus under 0.4GPa pressure.The heat treatment of being annealed in the protective atmosphere of argon gas, the internal stress produced to eliminate compacting, heat treatment temperature is 480 ℃.
Embodiment 4
Get the phosphoric acid of 1.5g, heating water bath to 85 ℃.Slowly add the 50gFeNiMo magnetically soft alloy, stir and make the two abundant hybrid reaction, passivation 30min.By FeCl 3, MnCl 2Salt and ZnCl 2Salt is Mn in molar ratio x Zn 1- x Fe 2O 4( x=0.4) be distributed in the ethylene glycol of 50ml FeCl 3For 0.5mmol, stir until dissolve fully.Add 1.54gCH 3COONH 4With the 0.8ml polyethylene glycol, stir 30 minutes.
Soft-magnetic alloy powder after pioneer's liquid and passivation is transferred in the stainless steel autoclave with agitating function to 220 ℃ of lower agitating heating 2h.Ethanol washing several for products therefrom, the drying under 80 ℃.
Get the W-6C of 0.3wt.%, pour in 50ml acetone to stir and make its dissolving, under 75 ℃ of water bath condition, be poured into above-mentioned mixed-powder, fully stir 1.5h and evenly mix to mixture evaporate to dryness, powder.
Powder is pressed into to fine and close annulus under 0.8GPa pressure.The heat treatment of being annealed in the protective atmosphere of nitrogen, the internal stress produced to eliminate compacting, heat treatment temperature is 520 ℃.
Embodiment 5
Get the phosphoric acid of 0.8g, heating water bath to 85 ℃.Slowly add the 100gFeSiAl magnetically soft alloy, stir and make the two abundant hybrid reaction, passivation 30min.By Fe(NO 3) 3, Mn(NO 3) 2And Zn(NO 3) 2Mn in molar ratio x Zn 1- x Fe 2O 4( x=0.2) be distributed in the ethylene glycol of 50ml Fe(NO 3) 3Salt is 0.5mmol, stirs until dissolve fully.Add 1.54gCH 3COONH 4With the 0.8ml polyethylene glycol, stir 30 minutes.
Soft-magnetic alloy powder after pioneer's liquid and passivation is transferred in the stainless steel autoclave with agitating function to 200 ℃ of lower agitating heating 10h.Ethanol washing several for products therefrom, the drying under 80 ℃.
Get 0.5% W-6C, pour in 50ml acetone to stir and make its dissolving, under 75 ℃ of water bath condition, be poured into above-mentioned mixed-powder, fully stir 1.5h and evenly mix to mixture evaporate to dryness, powder.
Powder is pressed into to fine and close annulus under 1.3GPa pressure.The heat treatment of being annealed in the protective atmosphere of nitrogen, the internal stress produced to eliminate compacting, heat treatment temperature is 600 ℃.
Embodiment 6
Get the phosphoric acid of 0.6g, heating water bath to 85 ℃.Slowly add the 20gFeCuNbSiB non-crystaline amorphous metal, stir and make the two abundant hybrid reaction, passivation 30min.By Fe 2(SO 4) 3, Ni SO 4And ZnSO 4Ni in molar ratio x Zn 1- x Fe 2O 4( x=0.3) be distributed in the ethylene glycol of 50ml Fe 2(SO 4) 3For 0.5mmol, stir until dissolve fully.Add 1.54gCH 3COONH 4With the 0.8ml polyethylene glycol, stir 30 minutes.
Soft-magnetic alloy powder after pioneer's liquid and passivation is transferred in the stainless steel autoclave with agitating function to 180 ℃ of lower agitating heating 12h.Ethanol washing several for products therefrom, the drying under 80 ℃.
Get the W-6C of 1.6wt.%, pour in 50ml acetone to stir and make its dissolving, under 75 ℃ of water bath condition, be poured into above-mentioned mixed-powder, fully stir 1.5h and evenly mix to mixture evaporate to dryness, powder.
Powder is pressed into to fine and close annulus under 1.6GPa pressure.The heat treatment of being annealed in the protective atmosphere of nitrogen, the internal stress produced to eliminate compacting, heat treatment temperature is 680 ℃.

Claims (2)

1. composite magnetic powder core and preparation method thereof is characterized in that its step is:
(a) passivation: get a certain amount of phosphoric acid, heating water bath to 85 ℃; Slowly add the magnetically soft alloy that needs passivation, stirring and making the two abundant hybrid reaction, passivation 30min, phosphoric acid consumption is 0.2 wt.% ~ 6 wt.%;
(b) pioneer's liquid is prepared: by Fe 3+Salt, Zn 2+Salt and Ni 2+(or Mn 2+) salt Ni in molar ratio x Zn 1- x Fe 2O 4(or Mn x Zn 1- x Fe 2O 4, x=0.2 ~ 0.8), be distributed in the ethylene glycol of 50ml Fe 3+Salt is 0.5mmol, stirs until dissolve fully; Add 1.54gCH 3COONH 4With the 0.8ml polyethylene glycol, stir 30 minutes;
(c) the powder original position coats: the soft-magnetic alloy powder after pioneer's liquid and passivation is transferred in the stainless steel autoclave with agitating function to 160 ℃ ~ 220 ℃ lower agitating heating 2h 24h; Ethanol washing several for products therefrom, the drying under 80 ℃; The magnetically soft alloy consumption can determine according to ferritic theoretical growing amount, and making magnetically soft alloy in product is 70 ~ 99.9wt.%, and ferrite is 0.1 ~ 30wt.%;
(d) add bonding agent: the W-6C that gets 0.1 ~ 4wt.% of the mixed-powder quality that step (c) obtains, pour in 50ml acetone and stir and make its dissolving, be poured into above-mentioned mixed-powder under 75 ℃ of water bath condition in, fully stir 1.5-2h and evenly mix to mixture evaporate to dryness, powder;
(e) moulding: powder is pressed into to fine and close annulus under 0.4 ~ 1.9GPa pressure;
(f) heat treatment: the heat treatment of being annealed in the protective atmosphere of nitrogen or argon gas, the internal stress produced to eliminate compacting, heat treatment temperature is 480 ~ 700 ℃.
2. a kind of composite magnetic powder core as claimed in claim 1 and preparation method thereof, it is characterized in that: described magnetically soft alloy is FeSiAl, FeSi, FeNiMo, FeNi and FeCuNbSiB amorphous.
CN201310411772.XA 2013-09-11 2013-09-11 A kind of composite magnetic powder core and preparation method thereof Expired - Fee Related CN103426580B (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105304308A (en) * 2015-11-18 2016-02-03 临沂银凤电子科技股份有限公司 Fe-Si-Al magnetic core preparation method and inorganic composite insulation coating material for magnetic core
CN106356177A (en) * 2016-09-19 2017-01-25 广东工业大学 Sendust/ferrite composite magnetic powder and preparation method of magnetic powder core adopting same
CN106504846A (en) * 2016-12-30 2017-03-15 江西艾特磁材有限公司 A kind of ferrum ferrosilicon oxysome composite cores and preparation method thereof
CN107799257A (en) * 2017-10-26 2018-03-13 中国兵器科学研究院宁波分院 A kind of preparation method of iron silicon metal soft magnetic composite material
CN108039260A (en) * 2017-10-26 2018-05-15 中国兵器科学研究院宁波分院 A kind of preparation method of 60 iron silica magnetic particle core materials of μ
CN108242311A (en) * 2017-12-18 2018-07-03 梅庆波 A kind of preparation method of cladded type soft-magnetic powder core
CN108305737A (en) * 2018-01-30 2018-07-20 中南大学 A kind of compound soft magnetic material and preparation method thereof
CN108329022A (en) * 2018-03-27 2018-07-27 电子科技大学 A kind of preparation method for the Z-type hexad ferrite substrate being orientated self
CN108364741A (en) * 2018-01-30 2018-08-03 中南大学 A kind of low core damage FeSiAlNi base compound soft magnetic materials and preparation method thereof
CN108987062A (en) * 2018-07-05 2018-12-11 浙江大学 A kind of ferrite-magnetically soft alloy composite cores and preparation method thereof
CN110428967A (en) * 2019-08-27 2019-11-08 四川大学 A kind of preparation method and product of ultra-low temperature cold sintered iron base nanocomposite powder core
CN110835269A (en) * 2019-10-30 2020-02-25 安徽朗基新材料科技有限公司 Production process of high-strength high-performance soft magnetic ferrite material
CN111696745A (en) * 2020-07-15 2020-09-22 中钢集团南京新材料研究院有限公司 Composite Fe-Si-Al soft magnetic powder core and preparation method thereof
CN113192717A (en) * 2021-04-22 2021-07-30 兰州大学 Metal soft magnetic composite material and preparation method thereof
CN113223845A (en) * 2021-04-25 2021-08-06 宁波中科毕普拉斯新材料科技有限公司 Insulating coating method of soft magnetic alloy powder
CN113223844A (en) * 2021-04-25 2021-08-06 宁波中科毕普拉斯新材料科技有限公司 Powder coating method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006269892A (en) * 2005-03-25 2006-10-05 Aica Kogyo Co Ltd Electromagnetic wave shielding molded article
CN102436895A (en) * 2011-12-19 2012-05-02 浙江大学 Preparation method for ferrosilicon aluminum magnetic powder core

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006269892A (en) * 2005-03-25 2006-10-05 Aica Kogyo Co Ltd Electromagnetic wave shielding molded article
CN102436895A (en) * 2011-12-19 2012-05-02 浙江大学 Preparation method for ferrosilicon aluminum magnetic powder core

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
WEI YAN等: "Structure and magnetic properties of nickel–zinc ferrite microspheres", 《MATERIALS SCIENCE AND ENGINEERING B》, 31 December 2010 (2010-12-31) *
薛志等: "NiZn 铁氧体包覆FeSiAl 合金复合材料及其微波电磁性能", 《工艺 技术 应用》, vol. 43, no. 3, 30 June 2012 (2012-06-30) *

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CN105304308A (en) * 2015-11-18 2016-02-03 临沂银凤电子科技股份有限公司 Fe-Si-Al magnetic core preparation method and inorganic composite insulation coating material for magnetic core
CN106356177A (en) * 2016-09-19 2017-01-25 广东工业大学 Sendust/ferrite composite magnetic powder and preparation method of magnetic powder core adopting same
CN106504846A (en) * 2016-12-30 2017-03-15 江西艾特磁材有限公司 A kind of ferrum ferrosilicon oxysome composite cores and preparation method thereof
CN106504846B (en) * 2016-12-30 2018-10-19 江西艾特磁材有限公司 A kind of iron silicon-ferrite composite cores and preparation method thereof
CN107799257A (en) * 2017-10-26 2018-03-13 中国兵器科学研究院宁波分院 A kind of preparation method of iron silicon metal soft magnetic composite material
CN108039260A (en) * 2017-10-26 2018-05-15 中国兵器科学研究院宁波分院 A kind of preparation method of 60 iron silica magnetic particle core materials of μ
CN108242311A (en) * 2017-12-18 2018-07-03 梅庆波 A kind of preparation method of cladded type soft-magnetic powder core
CN108364741B (en) * 2018-01-30 2019-08-13 中南大学 A kind of low core damage FeSiAlNi base compound soft magnetic material and preparation method thereof
CN108305737A (en) * 2018-01-30 2018-07-20 中南大学 A kind of compound soft magnetic material and preparation method thereof
CN108364741A (en) * 2018-01-30 2018-08-03 中南大学 A kind of low core damage FeSiAlNi base compound soft magnetic materials and preparation method thereof
CN108329022B (en) * 2018-03-27 2021-03-26 电子科技大学 Preparation method of self-oriented Z-shaped hexagonal ferrite substrate
CN108329022A (en) * 2018-03-27 2018-07-27 电子科技大学 A kind of preparation method for the Z-type hexad ferrite substrate being orientated self
CN108987062A (en) * 2018-07-05 2018-12-11 浙江大学 A kind of ferrite-magnetically soft alloy composite cores and preparation method thereof
CN110428967A (en) * 2019-08-27 2019-11-08 四川大学 A kind of preparation method and product of ultra-low temperature cold sintered iron base nanocomposite powder core
CN110835269A (en) * 2019-10-30 2020-02-25 安徽朗基新材料科技有限公司 Production process of high-strength high-performance soft magnetic ferrite material
CN111696745A (en) * 2020-07-15 2020-09-22 中钢集团南京新材料研究院有限公司 Composite Fe-Si-Al soft magnetic powder core and preparation method thereof
CN113192717A (en) * 2021-04-22 2021-07-30 兰州大学 Metal soft magnetic composite material and preparation method thereof
CN113192717B (en) * 2021-04-22 2023-06-30 兰州大学 Metal soft magnetic composite material and preparation method thereof
CN113223845A (en) * 2021-04-25 2021-08-06 宁波中科毕普拉斯新材料科技有限公司 Insulating coating method of soft magnetic alloy powder
CN113223844A (en) * 2021-04-25 2021-08-06 宁波中科毕普拉斯新材料科技有限公司 Powder coating method
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