CN109202091A - The preparation method of low oxygen content Sendust sheet alloy micro mist - Google Patents
The preparation method of low oxygen content Sendust sheet alloy micro mist Download PDFInfo
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Abstract
The present invention provides the preparation methods of low oxygen content Sendust sheet alloy micro mist, and it includes following steps: raw material powder S1, being carried out wet ball grinding, hydrophobing agent is added in the ball milling stage；S2, it is passed through inert gas in drying oven, the first powder after ball milling is gone in drying oven: S3, powder being annealed in reducibility gas atmosphere.Sendust sheet alloy micro mist made from preparation method using low oxygen content Sendust sheet alloy micro mist provided by the invention has extremely low oxygen content and excellent magnetic property；Without increasing additional production equipment, the product of the soft magnetism of high quality can be prepared by, widely available popularization and can be suitable for the preparations of all kinds of flaky powders.
Description
Technical field
The present invention relates to soft magnetic metal functional material processing preparation technical field more particularly to a kind of low oxygen contents
The preparation method of Sendust sheet alloy micro mist.
Background technique
Absorbing material is a kind of functional composite material for the purpose of electromagnetic wave absorption, by eliminating electromagnetism in shield
The past interflection of wave reduces clutter for the interference effect of its own equipment, while can also be effectively prevented electromagnetic radiation pair
It is a kind of means of currently a popular elimination Contamination of Electromagnetic Wave in the influence and unnecessary injury of surrounding devices and personnel.Example
Such as: being suitable for the FPC of mobile phone, computer IC chip, wiring board, LCD/ digital vedio recording mainboard, the electricity such as DVD/PDP applied to EMC
Sub- equipment；It can be applied to the metal that RFID is effectively solved in RFID system to interfere, improve antenna sensitivity, be suitable for mobile phone NFC
Antenna, electronic tag etc. every magnetic, be suitable for EMI filtering and noise suppressed.
Sendust alloy is also known as iron-silicon-aluminum soft magnet alloy, refers to the high magnetic permeability with iron sial for main component
Type magnetically soft alloy, typical composition are 9.6Si-5.4Al-85Fe, since the alloy is because of magnetocrystalline anisotropy constant and saturation magnetic
It causes to stretch all close to zero, thus soft magnet performance is fine；The content of this external cause silicon and aluminium is high, and resistance alloys rate is high, eddy-current loss
Low, the hardness of alloy is high (HV ≈ 500), and wearability is good, with preferable corrosion resistance and low stress sensitivity, preparation
Sheet micro mist have excellent electromagnetic performance, power loss is small, saturation induction density is high, magnetic conductivity with frequency change it is small
Close to 0 higher magnetic conductivity can be improved, so being often applied in (variation is less than 1% within 1MHz), magnetostriction coefficient
The production of absorbing material.
The preparation process of traditional suctions wave plate sprills includes at present: milling, drying, sintering, annealing, be crushed after wrap
Dress.Existing patent CN106876076A provides a kind of suction wave plate sprills and its preparation process, by the alloyed powder of iron sial
Solvent, lubricant and additive is added in end, carries out after wet ball-milling obtains sheet just powder, then be dried and be heat-treated etc.
The suction wave plate sprills are obtained after continuous operation.But the preparation process of suction wave plate sprills traditionally, the patent obtain
Flakelike powder oxygen content it is higher (1000-8500ppm), the flakelike powder by a certain percentage made of suction its magnetic of wave plate material
Conductance is between 40-120H/m, cannot have preferable magnetic property, there is biggish room for promotion.
The preparation of traditional Sendust sheet alloy micro mist is usually original with the atomization iron sial spherical powder of 60-300 mesh
Material, obtains target product, the typical composition of Sendust alloy is 9.6Si-5.4Al-85Fe, excessively high after subsequent technique is handled
Si and Al content easily to be oxidized in the preparation process of Sendust sheet alloy micro mist, lead to the iron sial of flaking
Micro mist forms nonmetal oxide, and is mingled with and is solid-solution between ferromagnetism atom, such as: Al2O3、SiO2Deng.This will seriously be hindered
Hinder the motion state of magnetic domain, to influence the magnetic property of product, the magnetic conductivity of iron sial micro mist is caused to decline, and is lost
It rises with it.So the Sendust sheet alloy micro powder product of preparation, should reduce excessively high oxygen content, oxygen contains in product as far as possible
Amount should preferably be controlled in 500ppm or less.
The major defect of the prior art is that oxygen content fails to be effectively controlled in power production preparation process, leads to product
It aoxidizes, too high oxygen level, to influence the magnetic property of product, may specifically be aoxidized in following steps:
(1) powder carries out in mechanical milling process in ball grinder, and powder is contacted with oxygen in ball milling pipe, promotes powder that oxidation occurs anti-
It answers；
(2) when being transferred to powder in drying oven after ball milling, excessive oxygen may be introduced since sealing performance is not good for drying oven
Oxidation reaction occurs in the drying process for powder afterwards；
(3) after the powder after drying is transferred to annealing furnace, surface may there are still the micro oxygen atoms in part, in annealing process,
The oxidation of powder further occurrence.
Summary of the invention
In order to solve the above problem, the present invention provides one kind carries out effectively its oxygen content in power production preparation process
The preparation method of the low oxygen content Sendust sheet alloy micro mist of control.
The preparation method of low oxygen content Sendust sheet alloy micro mist provided by the invention, it includes following steps:
S1, raw material powder is subjected to wet ball grinding, hydrophobing agent is added in the ball milling stage；
S2, it is passed through inert gas in drying oven, the first powder after ball milling is gone in drying oven:
S3, powder is annealed in reducibility gas atmosphere.
In the step S1, the additive amount of hydrophobing agent is the 1wt.%-5wt.% of raw material powder additive amount.
In the step S2, gas in drying oven hearth is first extracted out, and topping up, then by the ball after ball milling
Just powder is transferred in drying oven after mill, being continually fed into inert gas during powder drying and extract furnace gas out, is maintained
Pressure is constant in drying oven hearth.
Further, powder is in 60-120 DEG C of drying stage furnace chamber temperature in step S2,
Further, drying time is 6-24h in step S2.
The hydrophobing agent is at least one of dimethicone, polysilazane.
The inert gas is N2。
The reducibility gas be include H2And N2Mixed gas.Certainly, in specific industrial applications, institute
Stating reducing atmosphere gas can also be H2, decompose ammonia gas (75%H2+25%N2), ammonia unburnt gas (N2+ a small amount of H2), carbon
Hydrogen compound reacts the gas (H generated with vapor2+ CO or only H2), hydrocarbon imperfect combustion generate exothermicity
Coal gas (H2+CO+N2+CH4+CO2+H2) and heat absorptivity coal gas (H O2+CO+N2+CH4) etc., contain as long as playing oxygen in control annealing furnace
The effect of amount.Further, H in the reducibility gas2And N2Volume ratio be 3:1.
In a preferred embodiment of the invention, step S3 annealing stage carries out temperature control using segmented comprising following
Step:
S31,3-8 DEG C of heating rate/min when being warming up to 150-250 DEG C, keep the temperature 1.5-2.5min；
S32, when being warming up to 300-500 DEG C, 0.3-1min is kept the temperature；
S33, when being warming up to 600-950 DEG C, 4-12h is kept the temperature；
S34, it discharges after burner hearth Slow cooling is cooled to 30-60 DEG C.
More specifically, step S3 annealing stage carries out temperature control using segmented comprising following steps:
6 DEG C S31, heating rate/min when being warming up to 200 DEG C, keep the temperature 60min；
S32, when being warming up to 400 DEG C, 30min is kept the temperature；
S33, when being warming up to 600-950 DEG C, 4-12h is kept the temperature；
S34, it discharges after burner hearth Slow cooling is cooled to 30-60 DEG C.
Beneficial effects of the present invention are as follows:
1, Sendust sheet made from the preparation method using low oxygen content Sendust sheet alloy micro mist provided by the invention
Alloy powder has extremely low oxygen content and excellent magnetic property；
2, this method can be prepared by required product, widely available can promote and be applicable in without increasing additional production equipment
In the technique and method of the preparation of all kinds of flaky powders.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example is described in detail.
Raw material powder selects Qingdao Yun Lu aerosolization sendust spherical powder produced (- 200 mesh of 80 mesh), the Si
Content be 9-10mol%, the content of Al is 5-6mol%, and the content of the C is < 0.01mol%, and the content of Mn is <
The content of 0.1mol%, P are < 0.01mol%, and the content of S is < 0.01mol%, surplus Fe；Solvent selects industrial alcohol, can
Select stearic acid and dimethicone as ball milling additive, inert gas selects 99.999% N2。
Control group 1
S1, raw material powder, solvent are added to ball grinder；
S2, it before powder first after ball milling is transferred to drying oven, is dried, and control 80 DEG C of fire box temperature, dry 16h；
S3, the powder after drying is annealed in conventional environment, is discharged after burner hearth Slow cooling is cooled to 60 DEG C.
Control group 2
S1, raw material powder, solvent are added to ball grinder；
S2, it before powder first after ball milling is transferred to drying oven, is dried, and control 80 DEG C of fire box temperature, dry 16h；
S3, the powder after drying is annealed in conventional environment；
Annealing process uses segmented temperature control heat treatment process, and 3 DEG C/min of heating rate when being warming up to 200 DEG C, keeps the temperature 60min,
When being warming up to 400 DEG C, 30min is kept the temperature, when being warming up to 900 DEG C, 6h is kept the temperature, discharges i.e. after burner hearth Slow cooling is cooled to 60 DEG C
It can.
Embodiment 1
S1, raw material powder, solvent are added to ball grinder, the dimethicone of 2wt.% are added, float on mixed material upper layer,
Play the role of that oxygen is isolated；
S2, before powder first after ball milling is transferred to drying oven, gas in burner hearth, and topping up are first extracted out, in powder drying
It is continually fed into inert gas in the process and extracts furnace gas out, guarantees that pressure in the burner hearth is constant, and control 80 DEG C of fire box temperature, does
Dry 16h；
S3, the powder after drying is annealed in reducibility gas atmosphere, the reducibility gas is that volume ratio is 3:1's
H2And N2；
Annealing process uses segmented temperature control heat treatment process, and 3 DEG C/min of heating rate when being warming up to 200 DEG C, keeps the temperature 60min,
When being warming up to 400 DEG C, 30min is kept the temperature, when being warming up to 900 DEG C, 6h is kept the temperature, discharges i.e. after burner hearth Slow cooling is cooled to 60 DEG C
It can.
Embodiment 2
S1, raw material powder, solvent are added to ball grinder, the polysilazane of 4wt.% is added, float on mixed material upper layer, risen
To the effect of isolation oxygen；
S2, before powder first after ball milling is transferred to drying oven, gas in burner hearth, and topping up are first extracted out, in powder drying
It is continually fed into inert gas in the process and extracts furnace gas out, guarantees that pressure in the burner hearth is constant, and control 60 DEG C of fire box temperature, does
Dry 6h；
S3, the powder after drying is annealed in reducibility gas atmosphere, the reducibility gas is H22；
Wherein annealing process uses segmented temperature control heat treatment process, 3 DEG C/min of heating rate, when from room temperature to 200 DEG C,
60min is kept the temperature, when being warming up to 400 DEG C, keeps the temperature 30min, when being warming up to 800 DEG C, 4h is kept the temperature, is cooled to 50 to burner hearth Slow cooling
It discharges after DEG C.
Embodiment 3
S1, raw material powder, solvent are added to ball grinder, the polysilazane of 1wt.% and the dimethylsilane of 1wt.% are added,
Float on mixed material upper layer, plays the role of that oxygen is isolated；
S2, before powder first after ball milling is transferred to drying oven, gas in burner hearth, and topping up are first extracted out, in powder drying
It is continually fed into inert gas in the process and extracts furnace gas out, guarantees that pressure in the burner hearth is constant, and control 120 DEG C of fire box temperature,
Dry 20h；
S3, the powder after drying is annealed in reducibility gas atmosphere, the reducibility gas is that volume ratio is 3:1's
H2And N2；
Wherein annealing process uses segmented temperature control heat treatment process, 3 DEG C/min of heating rate, when from room temperature to 150 DEG C,
90min is kept the temperature, when being warming up to 500 DEG C, keeps the temperature 30min, when being warming up to 950 DEG C, 8h is kept the temperature, is cooled to 30 to burner hearth Slow cooling
It discharges after DEG C.
Embodiment 4
S1, raw material powder, solvent are added to ball grinder, the dimethylsilane of 4wt.% are added, float on mixed material upper layer,
Play the role of that oxygen is isolated；
S2, before powder first after ball milling is transferred to drying oven, gas in burner hearth, and topping up are first extracted out, in powder drying
It is continually fed into inert gas in the process and extracts furnace gas out, guarantees that pressure in the burner hearth is constant, and control 100 DEG C of fire box temperature,
Dry 6h；
S3, the powder after drying is annealed in reducibility gas atmosphere, the reducibility gas is N2；
Wherein annealing process uses segmented temperature control heat treatment process, 3 DEG C/min of heating rate, when from room temperature to 200 DEG C,
60min is kept the temperature, when being warming up to 400 DEG C, keeps the temperature 30min, when being warming up to 800 DEG C, 10h is kept the temperature, is cooled to burner hearth Slow cooling
It discharges after 40 DEG C.
Embodiment 5
S1, raw material powder, solvent are added to ball grinder, the dimethylsilane of 2wt.% and the polysilazane of 3wt.% are added,
Float on mixed material upper layer, plays the role of that oxygen is isolated；
S2, before powder first after ball milling is transferred to drying oven, gas in burner hearth, and topping up are first extracted out, in powder drying
It is continually fed into inert gas in the process and extracts furnace gas out, guarantees that pressure in the burner hearth is constant, and control 110 DEG C of fire box temperature,
Drying is for 24 hours；
S3, the powder after drying is annealed in reducibility gas atmosphere, the reducibility gas is that volume ratio is 3:1's
H2And N2；
Wherein annealing process uses segmented temperature control heat treatment process, 3 DEG C/min of heating rate, when from room temperature to 200 DEG C,
60min is kept the temperature, when being warming up to 400 DEG C, keeps the temperature 30min, when being warming up to 700 DEG C, 10h is kept the temperature, is cooled to burner hearth Slow cooling
It discharges after 40 DEG C.
Test the oxygen content of the Sendust sheet alloy micro mist of control group 1,2 and embodiment 1-5 preparation；By flaky powder,
Polyurethane resin and cyclohexanone are mixed by 1:1:5, and slurry is made after uniform stirring, coat to release film, electricity is made after compacting
Suction wave plate material needed for magnetic shielding material measures the Effective permeability μ of its product respectively.
The oxygen content and respective magnetic of Sendust sheet alloy micro mist obtained can following institutes under Different Preparation
Show:
Correlated performance:
Powder type oxygen content/ppm inhales wave plate magnetic conductivity (H/m)
Control group 1 5319-7,926 67.2-97.8
Control group 2 3000-5,000 78.5-121.3
Embodiment 1 107-432 135-216
Embodiment 2 123-512 148.7-203.5
Embodiment 3 104-455 153-195
Embodiment 4 132-465 161-214
Embodiment 5 104-455 156-203
In conclusion using Sendust sheet alloy micro mist made from novel process provided by the invention there is extremely low oxygen to contain
Amount and excellent magnetic property, the technique can be prepared by required product, are that one kind can be wide without increasing additional production equipment
Technique and method general universal and that be suitable for the preparation of all kinds of flaky powders.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the claims in the present invention
Protection scope.
Claims (10)
1. the preparation method of low oxygen content Sendust sheet alloy micro mist, which is characterized in that comprise the steps of:
S1, raw material powder is subjected to wet ball grinding, hydrophobing agent is added in the ball milling stage；
S2, it is passed through inert gas in drying oven, the first powder after ball milling is gone in drying oven and is dried:
S3, the powder after drying is annealed in reducibility gas atmosphere.
2. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 1, which is characterized in that
In step S2, first extract gas in drying oven hearth out, and topping up, then by after the ball milling after ball milling just powder be transferred to it is dry
In dry furnace, being continually fed into inert gas during powder drying and extract furnace gas out, pressure in drying oven hearth is maintained
It is constant.
3. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 1, which is characterized in that step
It is 60-120 DEG C that powder, which is in drying stage furnace chamber temperature, in rapid S2.
4. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 2 or 3, which is characterized in that
Drying time is 6-24h in step S2.
5. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 1, which is characterized in that institute
Stating hydrophobing agent is at least one of dimethicone, polysilazane.
6. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 1, which is characterized in that institute
Stating inert gas is N2。
7. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 1, which is characterized in that institute
Stating reducibility gas to be includes H2And N2Mixed gas.
8. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 7, which is characterized in that institute
State H in reducibility gas2And N2Volume ratio be 3:1.
9. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 8, which is characterized in that step
Rapid S3 annealing stage carries out temperature control using segmented comprising following steps:
S31,3-8 DEG C of heating rate/min when from room temperature to 150-250 DEG C, keep the temperature 1.5-2.5min；
S32, when being warming up to 300-500 DEG C, 0.3-1min is kept the temperature；
S33, when being warming up to 600-950 DEG C, 4-12h is kept the temperature；
S34, it discharges after burner hearth Slow cooling is cooled to 30-60 DEG C.
10. the preparation method of low oxygen content Sendust sheet alloy micro mist according to claim 9, which is characterized in that step
Rapid S3 annealing stage carries out temperature control using segmented comprising following steps:
6 DEG C S31, heating rate/min when being warming up to 200 DEG C, keep the temperature 60min；
S32, when being warming up to 400 DEG C, 30min is kept the temperature；
S33, when being warming up to 600-950 DEG C, 4-12h is kept the temperature；
S34, it discharges after burner hearth Slow cooling is cooled to 30-60 DEG C.
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| CN114045435A (en) * | 2021-11-11 | 2022-02-15 | 泉州天智合金材料科技有限公司 | Iron-based amorphous nanocrystalline wave-absorbing material and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280241A (en) * | 2011-08-20 | 2011-12-14 | 陈登刚 | Manufacturing process for iron-silicon-aluminum soft magnetic powder |
| CN104538143A (en) * | 2014-12-03 | 2015-04-22 | 北矿磁材科技股份有限公司 | Flat soft magnet powder and preparation method thereof |
| CN104835610A (en) * | 2014-07-04 | 2015-08-12 | 兰州大学 | Flake high frequency soft magnetic micro powder fracturing along C crystal face, preparation method therefor and application thereof |
| CN105441794A (en) * | 2014-08-07 | 2016-03-30 | 邓洪泉 | Wave absorbing material and manufacturing process thereof |
| CN105834439A (en) * | 2016-06-12 | 2016-08-10 | 横店集团东磁股份有限公司 | Preparation method of flat soft magnetic alloy powder |
| CN105970083A (en) * | 2016-06-06 | 2016-09-28 | 古前春 | Manufacturing process for iron-silicon-aluminum alloy powder |
| CN107299290A (en) * | 2017-06-27 | 2017-10-27 | 湖州知维技术服务有限公司 | A kind of soft magnetic powder and preparation method thereof |
| US20180090252A1 (en) * | 2016-09-29 | 2018-03-29 | Seiko Epson Corporation | Soft magnetic powder, powder magnetic core, magnetic element, and electronic device |
| US20180151294A1 (en) * | 2016-11-29 | 2018-05-31 | Hyundai Motor Company | Method of producing soft magnetic powder |
-
2018
- 2018-11-09 CN CN201811329255.7A patent/CN109202091A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280241A (en) * | 2011-08-20 | 2011-12-14 | 陈登刚 | Manufacturing process for iron-silicon-aluminum soft magnetic powder |
| CN104835610A (en) * | 2014-07-04 | 2015-08-12 | 兰州大学 | Flake high frequency soft magnetic micro powder fracturing along C crystal face, preparation method therefor and application thereof |
| CN105441794A (en) * | 2014-08-07 | 2016-03-30 | 邓洪泉 | Wave absorbing material and manufacturing process thereof |
| CN104538143A (en) * | 2014-12-03 | 2015-04-22 | 北矿磁材科技股份有限公司 | Flat soft magnet powder and preparation method thereof |
| CN105970083A (en) * | 2016-06-06 | 2016-09-28 | 古前春 | Manufacturing process for iron-silicon-aluminum alloy powder |
| CN105834439A (en) * | 2016-06-12 | 2016-08-10 | 横店集团东磁股份有限公司 | Preparation method of flat soft magnetic alloy powder |
| US20180090252A1 (en) * | 2016-09-29 | 2018-03-29 | Seiko Epson Corporation | Soft magnetic powder, powder magnetic core, magnetic element, and electronic device |
| US20180151294A1 (en) * | 2016-11-29 | 2018-05-31 | Hyundai Motor Company | Method of producing soft magnetic powder |
| CN107299290A (en) * | 2017-06-27 | 2017-10-27 | 湖州知维技术服务有限公司 | A kind of soft magnetic powder and preparation method thereof |
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| CN114045435A (en) * | 2021-11-11 | 2022-02-15 | 泉州天智合金材料科技有限公司 | Iron-based amorphous nanocrystalline wave-absorbing material and preparation method thereof |
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