CN107452458A - A kind of ferroalloy magnetic material and preparation method thereof - Google Patents
A kind of ferroalloy magnetic material and preparation method thereof Download PDFInfo
- Publication number
- CN107452458A CN107452458A CN201710543396.8A CN201710543396A CN107452458A CN 107452458 A CN107452458 A CN 107452458A CN 201710543396 A CN201710543396 A CN 201710543396A CN 107452458 A CN107452458 A CN 107452458A
- Authority
- CN
- China
- Prior art keywords
- magnetic material
- ball
- ferroalloy
- preparation
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dispersion Chemistry (AREA)
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a kind of ferroalloy magnetic material and preparation method thereof, and preparing the raw material of the ferroalloy magnetic material includes each simple substance component of following mass percent：Fe 85.5% 93.0%, Cr 3.0% 6.5%, Al3.0% 7.0%, Si 0.5% 2.0% and Mn 0.1% 0.8%.The preparation method includes：(1) mix：The raw material, process control agent and abrading-ball of ferroalloy magnetic material are mixed；(2) ball milling：Ball milling is carried out in protective atmosphere and obtains alloy powder；(3) it is granulated：Organic solvent is added in the powder and resin continues ball milling and obtains slurry, will be crushed after the slurry drying, then sieving obtains the ferroalloy magnetic material.The ferroalloy magnetic material composition that the present invention obtains is uniform, has high intensity and high insulation characterisitic, meets requirement of the power inductance to magnetic core intensity and insulating properties.
Description
Technical field
The present invention relates to ferroalloy materials technical field, more particularly to a kind of ferroalloy magnetic material and preparation method thereof.
Background technology
Ferroalloy magnetic material is widely used in electronic product at present, with the rapid development of electronics industry, quickly disappears
The smart terminal product of expense class causes the densification of circuit to turn into inexorable trend to the demand of processing speed and ability, and this directly leads
Inductance type component is caused also to develop towards the direction of small size, and the strength problem that product miniaturization is brought is the pass of electric induction
One of key point；Meanwhile alloy power inductance typically realizes the system of subsequent product using end Ag, electroplated Ni and plating Sn technology mode
Into, and plating phenomenon is climbed if occurring in electroplating process if material surface insulating properties difference in electroplating process, so the high insulation of exploitation
The material of performance is to needing the product development by electroplating processes process to play an important roll.
Now mainly there are Fe-Si, FeSiAl, FeSiCr, FeNi and FeNiMo etc. using more magnetic alloy material, still
Although magnetic conductivity is higher after the heat treatment such as FeSi, FeSiAl, FeSiCr and Fe-Ni, its intensity or insulating properties are poor, hold
Easily mechanical reliability problems in use be present, or can not be used directly to carry out related electroplating processes, therefore develop
The ferroalloy magnetic material of high intensity and high insulating property is very necessary.
The content of the invention
The present invention provides a kind of ferroalloy magnetic material and preparation method thereof, the ferroalloy magnetic material have high intensity and
High insulation characterisitic, meet requirement of the power inductance to magnetic core intensity and insulating properties.
The present invention adopts the following technical scheme that：
A kind of ferroalloy magnetic material, preparing the raw material of the ferroalloy magnetic material includes each of following mass percent
Simple substance component：Fe 85.5%-93.0%, Cr 3.0%-6.5%, Al 3.0%-7.0%, Si 0.5%-2.0% and Mn
0.1%-0.8%.
Preferably, in the raw material, Si mass percent is 0.5%-1.0%.
Preferably, in the raw material, Mn mass percent is 0.1%-0.5%.
Preferably, in the raw material, Fe, Cr, Al, Si and Mn average grain diameter is respectively 5 μm -20 μm, 5 μm -15 μm, 10
μm -30 μm, 3 μm -15 μm and 2-15 μm.
A kind of preparation method of described ferroalloy magnetic material, comprises the following steps：
(1) mix：The raw material, process control agent and the abrading-ball that prepare the ferroalloy magnetic material are mixed, it is described
The addition of process control agent is the 0.5wt%-3wt% of the raw material weight, and the mass ratio of powder and abrading-ball is 1:8-1:20；
(2) ball milling：Ball milling is carried out in protective atmosphere and obtains alloy powder；
(3) it is granulated：Organic solvent is added in the powder and resin continues ball milling and obtains slurry, the organic solvent
Addition makes the powder lot dispersing enough, and the addition of the resin is the 2-10wt% of the powder weight, by the slurry
Crushed after drying, then sieving obtains the ferroalloy magnetic material.
Preferably, in the step (1), abrading-ball is using a diameter of 1-4mm bead and a diameter of 5-10mm big ball
The mass ratio of mixing, bead and big ball is 4:1~2:1.
Preferably, in the step (2), the rotating speed of ball milling is 350-500rpm, Ball-milling Time 40-80h.
Preferably, in the step (3), sieved using 60-300 eye mesh screens.
Preferably, in the step (1), the process control agent is ethanol；In the step (3), the organic solvent
For at least one of ethanol, acetone, butanone；In the step (3), the resin is epoxy resin, furfural resin, polyethylene
At least one of alcohol, silicones.
A kind of inductance, it is prepared by described ferroalloy magnetic material.
Beneficial effects of the present invention include：The ferroalloy magnetic material composition of the present invention is uniform, and there is high intensity (to be not less than
200MPa) with high insulation (being more than 500M Ω) characteristic, requirement of the power inductance to magnetic core intensity and insulating properties can be met.
Brief description of the drawings
Fig. 1 is the XRD of the ferroalloy magnetic material obtained in the preparation process of the specific embodiment of the invention.
Embodiment
Below against accompanying drawing and with reference to preferred embodiment, the invention will be further described.It should be noted that
In the case of not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
The present invention provides a kind of ferroalloy magnetic material, in a particular embodiment, prepares the ferroalloy magnetic material
The raw material of material includes each simple substance component of following mass percent：Fe 85.5%-93.0%, Cr3.0%-6.5%, Al
3.0%-7.0%, Si 0.5%-2.0% and Mn 0.1%-0.8%.
In a preferred embodiment, one or more kinds of combinations in following scheme can also be used：
In the raw material, Si mass percent is 0.5%-1.0%.
In the raw material, Mn mass percent is 0.1%-0.5%.
In the raw material, Fe, Cr, Al, Si and Mn average grain diameter are respectively 5 μm -20 μm, 5 μm -15 μm, 10 μm of -30 μ
M, 3 μm -15 μm and 2-15 μm.
Below by way of form form to the ferroalloy magnetic in the preferred embodiments of the present invention 1-4 and comparative example 1-2
(unit is the formula of material：G) illustrate.
Table 1：
| Simple substance component | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 |
| Fe | 91.9 | 91.7 | 92.5 | 86.8 | 87 | 87.3 | 92.4 |
| Cr | 4.5 | 3.5 | 3.0 | 5.0 | 6.5 | 5.5 | 5.0 |
| Al | 3.0 | 4.0 | 3.5 | 7.0 | 5.0 | 4.5 | 2.0 |
| Si | 0.5 | 0.6 | 0.7 | 0.8 | 1.0 | 2.2 | 0.4 |
| Mn | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.5 | 0.2 |
The present invention also provides a kind of preparation method of described ferroalloy magnetic material, comprises the following steps：
(1) mix：The raw material, process control agent and the abrading-ball that prepare the ferroalloy magnetic material are mixed, it is described
The addition of process control agent is the 0.5wt%-3wt% of the raw material weight, and the mass ratio of powder and abrading-ball is 1:8-1:20；
(2) ball milling：Ball milling is carried out in protective atmosphere and obtains alloy powder；
(3) it is granulated：Organic solvent is added in the powder and resin carries out abundant ball milling mixing and obtains slurry, it is described to have
The addition of solvent makes the powder lot dispersing enough, and the addition of the resin is the 2-10wt% of the powder weight, will
Crushed after the slurry drying, then sieving obtains the ferroalloy magnetic material.
In a preferred embodiment, one or more kinds of combinations in following scheme can also be used：
In the step (1), abrading-ball uses the mixing of a diameter of 1-4mm bead and a diameter of 5-10mm big ball, small
The mass ratio of ball and big ball is 4:1~2:1；Abrading-ball for example can be zirconium oxide material, or hard steel ball etc., in mixing,
The purpose of adition process controlling agent is in order to reduce ball milling wall sticking phenomenon, so as to lift grinding efficiency.
In the step (2), the rotating speed of ball milling is 350-500rpm, Ball-milling Time 40-80h；Protective atmosphere can be
N2Or other inert gases, such as Ar.
In the step (3), sieved using 60-300 eye mesh screens.
In the step (1), the process control agent is ethanol.
In the step (3), the organic solvent is at least one of ethanol, acetone, butanone.
In the step (3), the resin is at least one in epoxy resin, furfural resin, polyvinyl alcohol, silicones
Kind.
Wherein, described raw material is also powder, but the average grain diameter of the alloy powder obtained after step (2) ball milling compared with
Raw material is small, such as the raw material Fe of addition average grain diameter is 5 μm -20 μm, and after ball milling, average grain diameter can be less than 5 μm.
In the granulation of step (3), the addition sequence of organic solvent and resin is not restricted, such as can first be added organic
Solvent ball milling mixing 30-60min, resin ball milling mixing 30-90min is added, or first add resin ball milling mixing, added
Organic solvent ball milling mixing, or organic solvent and resin add ball milling mixing 60-150min again simultaneously, the ball milling in the step
Speed is also between 350-500rpm.
Drying in step (3) can first be air-dried in atmosphere, be then dried again at 120-250 DEG C.
Preparation method is described as follows by taking the formula of embodiment 1 as an example：
(1) mix：It is as follows to weigh each simple substance raw material powder：Fe 90.6g, Cr 4.5, Al 4.0g, Si 0.7g, Mn 0.2g
(quality amounts to 100g), weighed according to ratio of grinding media to material example needed for ball millingWithZirconia ball (ratio of grinding media to material=10:
1, mass ratio=1 of large and small zirconium ball:3), the two mixing is put into ball grinder, and the absolute ethyl alcohol that 2wt% (2g) is added dropwise is made
For process control agent.
(2) ball grinder is vacuumized, is passed through N2As milling protection atmosphere, it is placed in afterwards in planetary ball mill and carries out ball
Mill, rotational speed of ball-mill and Ball-milling Time are respectively set to 400rpm and 50h, treat to further take out alloyed powder after ball grinder cooling completely
Material.
(3) it is granulated：Alloy powder obtained by ball milling is mixed with absolute ethyl alcohol and is placed in mixing 30min in ball grinder, so
Add 8wt% (i.e. 8g) epoxy resin thereto afterwards, continue ball milling 1h, filter slurry placement air apoplexy after zirconia ball
It is dry, it is placed in baking oven after to be dried and is further dried, temperature selects 200 DEG C；Crushed simultaneously after powder is completely dried
Sieved to obtain ferroalloy magnetic material with 60-300 eye mesh screens.As shown in figure 1, it is the obtained alloyed powder in mechanical milling process
The XRD of material, wherein curve 2 are the alloy powder (peak that wherein, A is Fe) that ball milling 10h is obtained, and curve 1 is that ball milling 50h is obtained
Alloy powder, compared with curve 2, occur in curve 1 peak disappear decline with peak intensity (as shown in dotted line circle) and peak change occur
Width, this shows after ball milling 50h that the element such as Cr and Al enters and occurs the effect of alloying in the lattice of Fe metals.
In order to test the performance of ferroalloy magnetic material, the ferroalloy magnetic material of each embodiment and comparative example by more than
Powder shaping press is used to be pressed for magnet ring or magnetic stripe, pressed density control 5.6g/cm3~6.0g/cm3Between (
It is 6.0g/cm in example3), the size for suppressing magnet ring is external diameter (OD) * internal diameter (ID) * thickness (TH)=8.0mm*5.0mm*
2.0mm, the size for suppressing magnetic stripe are length (L) × width (b) × height (h)=32mm*4mm*3mm.Using common batch-type furnace
Magnet ring after compacting or magnetic stripe are sintered (in atmosphere), sintering temperature is controlled at 700 DEG C~750 DEG C, insulation
Between be 100~200min (the sintered heat insulating time is 3h in this example), magnet ring or magnetic stripe cool to room temperature with the furnace after sintering.
In this example, Performance Evaluation is carried out to the FeCrAlSiMn magnet rings after sintering, number of turns N=26Ts circles, is used
3260B type LCR testers test the initial permeability of magnet ring sample；With the pressure-resistant survey of electronic universal tester CH-333 types insulation
Try the insulation of instrument test sample and pressure-resistant performance；Use the spectral characteristic of E4991A test samples.Each embodiment and comparative example
Performance comparison is as shown in table 2 below：
Table 2
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 |
| Magnetic conductivity | 52 | 53 | 50 | 50 | 51 | 46 | 48 |
| Insulate (M Ω) | 675 | 650 | 600 | 513 | 520 | 450 | 87 |
| Pressure-resistant (V) | 506 | 500 | 480 | 426 | 435 | 300 | 108 |
| Intensity (MPa) | 213 | 208 | 200 | 225 | 230 | 160 | 137 |
The strength of materials and electromagnetic performance that comparing embodiment and comparative example obtain understand the material synthesis obtained by embodiment
Performance is better than comparative example：Magnetic permeability μ=50 ± 8% of material (FeCrAlSiMn alloy materials) in embodiment, insulate ＞
500M Ω, pressure-resistant ＞ 400V, intensity can reach more than 200MPa.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention by
The scope of patent protection that the claims submitted determine.
Claims (10)
1. a kind of ferroalloy magnetic material, it is characterised in that preparing the raw material of the ferroalloy magnetic material includes following quality
Each simple substance component of percentage：Fe 85.5%-93.0%, Cr 3.0%-6.5%, Al 3.0%-7.0%, Si 0.5%-
2.0% and Mn 0.1%-0.8%.
2. ferroalloy magnetic material according to claim 1, it is characterised in that in the raw material, Si mass percent
For 0.5%-1.0%.
3. ferroalloy magnetic material according to claim 1 or 2, it is characterised in that in the raw material, Mn quality percentage
Than for 0.1%-0.5%.
4. ferroalloy magnetic material according to claim 1 or 2, it is characterised in that in the raw material, Fe, Cr, Al, Si
Average grain diameter with Mn is respectively 5 μm -20 μm, 5 μm -15 μm, 10 μm -30 μm, 3 μm -15 μm and 2-15 μm.
5. the preparation method of the ferroalloy magnetic material described in a kind of any one of claim 1-4, it is characterised in that including as follows
Step：
(1) mix：By raw material, process control agent and the mill of the ferroalloy magnetic material described in preparation claim any one of 1-4
Ball is mixed, and the addition of the process control agent is the 0.5wt%-3wt% of the raw material weight, powder and abrading-ball matter
Amount is than being 1:8-1:20；
(2) ball milling：Ball milling is carried out in protective atmosphere and obtains alloy powder；
(3) it is granulated：Organic solvent is added in the powder and resin continues ball milling and obtains slurry, the addition of the organic solvent
Amount makes the powder lot dispersing enough, and the addition of the resin is the 2-10wt% of the powder weight, by the slurry drying
After crushed, then sieving obtain the ferroalloy magnetic material.
6. preparation method as claimed in claim 5, it is characterised in that in the step (1), abrading-ball uses a diameter of 1-4mm
Bead and a diameter of 5-10mm big ball mixing, the mass ratio of bead and big ball is 4:1~2:1.
7. preparation method as claimed in claim 5, it is characterised in that in the step (2), the rotating speed of ball milling is 350-
500rpm, Ball-milling Time 40-80h.
8. preparation method as claimed in claim 5, it is characterised in that in the step (3), carried out using 60-300 eye mesh screens
Sieving.
9. preparation method as claimed in claim 5, it is characterised in that in the step (1), the process control agent is second
Alcohol；In the step (3), the organic solvent is at least one of ethanol, acetone, butanone；It is described in the step (3)
Resin is at least one of epoxy resin, furfural resin, polyvinyl alcohol, silicones.
10. a kind of inductance, it is characterised in that be prepared as the ferroalloy magnetic material described in claim any one of 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543396.8A CN107452458B (en) | 2017-07-05 | 2017-07-05 | Iron alloy magnetic material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543396.8A CN107452458B (en) | 2017-07-05 | 2017-07-05 | Iron alloy magnetic material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107452458A true CN107452458A (en) | 2017-12-08 |
| CN107452458B CN107452458B (en) | 2020-10-13 |
Family
ID=60488212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710543396.8A Active CN107452458B (en) | 2017-07-05 | 2017-07-05 | Iron alloy magnetic material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107452458B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110293220A (en) * | 2019-07-26 | 2019-10-01 | 深圳市麦捷微电子科技股份有限公司 | A kind of alloy core metallization treating method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6160807A (en) * | 1984-09-01 | 1986-03-28 | Fukuda Kinzoku Hakufun Kogyo Kk | Production of metallic powder having narrow width of grain size |
| CN1507637A (en) * | 2001-04-13 | 2004-06-23 | ������ѧ��ʽ���� | Magentic core and magnetic core-use adhesive resin composition |
| CN1690242A (en) * | 2004-04-27 | 2005-11-02 | 宝山钢铁股份有限公司 | Soft magnetic structural-steel-plate with excellent toughness under low temperature and method for making same |
| US20100044618A1 (en) * | 2007-09-11 | 2010-02-25 | Sumitomo Electric Industries, Ltd. | Soft magnetic material, dust core, method for manufacturing soft magnetic material, and method for manufacturing dust core |
| CN102177268A (en) * | 2008-10-10 | 2011-09-07 | 株式会社丰田自动织机 | Iron alloy, iron alloy member and manufacturing method therefor |
| CN102732800A (en) * | 2012-06-10 | 2012-10-17 | 电子科技大学 | Fe-Ni-Cr soft magnetic alloy and preparation method thereof |
| CN104036900A (en) * | 2013-03-05 | 2014-09-10 | 大同特殊钢株式会社 | Soft Magnetic Metal Powder And Powder Core |
-
2017
- 2017-07-05 CN CN201710543396.8A patent/CN107452458B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6160807A (en) * | 1984-09-01 | 1986-03-28 | Fukuda Kinzoku Hakufun Kogyo Kk | Production of metallic powder having narrow width of grain size |
| CN1507637A (en) * | 2001-04-13 | 2004-06-23 | ������ѧ��ʽ���� | Magentic core and magnetic core-use adhesive resin composition |
| CN1690242A (en) * | 2004-04-27 | 2005-11-02 | 宝山钢铁股份有限公司 | Soft magnetic structural-steel-plate with excellent toughness under low temperature and method for making same |
| US20100044618A1 (en) * | 2007-09-11 | 2010-02-25 | Sumitomo Electric Industries, Ltd. | Soft magnetic material, dust core, method for manufacturing soft magnetic material, and method for manufacturing dust core |
| CN102177268A (en) * | 2008-10-10 | 2011-09-07 | 株式会社丰田自动织机 | Iron alloy, iron alloy member and manufacturing method therefor |
| CN102732800A (en) * | 2012-06-10 | 2012-10-17 | 电子科技大学 | Fe-Ni-Cr soft magnetic alloy and preparation method thereof |
| CN104036900A (en) * | 2013-03-05 | 2014-09-10 | 大同特殊钢株式会社 | Soft Magnetic Metal Powder And Powder Core |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110293220A (en) * | 2019-07-26 | 2019-10-01 | 深圳市麦捷微电子科技股份有限公司 | A kind of alloy core metallization treating method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107452458B (en) | 2020-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107129291B (en) | With high frequency low-temperature coefficient low-loss MnZn soft magnetic ferrite and preparation method thereof | |
| CN107555984A (en) | A kind of ferritic sintering process control climate methods of high frequency wide-temperature and low-consumption MnZn | |
| US6071430A (en) | Low-loss ferrite working between 1 MHZ and 100 MHZ and method of manufacture | |
| CN106158340B (en) | A kind of Fe Si Al powder core toroidal magnets and preparation method thereof | |
| WO2015009050A1 (en) | Soft magnetic core having excellent high-current dc bias characteristics and core loss characteristics and method of manufacturing same | |
| CN107417266A (en) | One kind is without rare earth garnet ferrite material and preparation method thereof | |
| CN107352993A (en) | A kind of high frequency Mn-Zn soft magnetic ferrite and preparation method thereof | |
| CN111063501B (en) | Preparation method of low-loss powder for producing integrally-formed inductor | |
| CN102344283A (en) | Magnesium-zinc soft magnetic ferrite and preparation method thereof | |
| CN104392819A (en) | Composite soft magnetic material and preparation method thereof | |
| CN112479699B (en) | Low-loss nano ferrite magnetic material and preparation method thereof | |
| CN107275033A (en) | A kind of magnetically soft alloy material and preparation method thereof | |
| CN103745791A (en) | Production method of ultrahigh magnetic permeability of iron-based nanocrystalline magnetic powder core | |
| CN102361716A (en) | Composite magnetic material | |
| CN104464997B (en) | A kind of preparation method of high-coercivity neodymium-iron-boronpermanent-magnet permanent-magnet material | |
| CN110922179A (en) | High-permeability low-loss ferrite material and preparation method thereof | |
| CN113314326B (en) | High-permeability low-eddy-current-loss insulating powder and preparation method thereof | |
| CN107452458A (en) | A kind of ferroalloy magnetic material and preparation method thereof | |
| CN110981460B (en) | Preparation method of ferrite magnetic material with high magnetic permeability | |
| CN107721404A (en) | For manufacturing the dry-pressing opposite sex magnetic of multisegmented rotor, its preparation method and by its obtained permanent-magnet ferrite | |
| CN104036903B (en) | A kind of preparation method of ferrum tantnickel powder core | |
| CN110342922A (en) | A kind of complex ferrite material and preparation method thereof, laminated inductance | |
| CN107129292B (en) | One kind prepares the ferritic ionic association alternatives of high-performance MnZn | |
| CN112374879B (en) | Preparation method of anti-electromagnetic interference manganese-zinc ferrite material | |
| CN109513933B (en) | Preparation method of iron-based soft magnetic core with high temperature resistance and high surface resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200901 Address after: No. 201, factory building, shunluo electronics factory, No. 16, Dafu Industrial Zone, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Applicant after: Shenzhen shunluo Automotive Electronics Co., Ltd Address before: Shenzhen City, Guangdong province Baoan District 518110 sightseeing road s Fuyuan sunlord Industrial Park Applicant before: Shenzhen Sunlord Electronics Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |