CN102925823A - Iron cobalt-based magnetically soft alloy with high saturation magnetic flux density and preparation method of iron cobalt-based magnetically soft alloy - Google Patents

Iron cobalt-based magnetically soft alloy with high saturation magnetic flux density and preparation method of iron cobalt-based magnetically soft alloy Download PDF

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CN102925823A
CN102925823A CN2012104957889A CN201210495788A CN102925823A CN 102925823 A CN102925823 A CN 102925823A CN 2012104957889 A CN2012104957889 A CN 2012104957889A CN 201210495788 A CN201210495788 A CN 201210495788A CN 102925823 A CN102925823 A CN 102925823A
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alloy
iron cobalt
flux density
magnetic flux
saturation magnetic
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严密
赵国梁
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NINGBO ALST ELECTRICAL CO Ltd
Zhejiang University ZJU
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NINGBO ALST ELECTRICAL CO Ltd
Zhejiang University ZJU
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Abstract

The invention discloses an iron cobalt-based magnetically soft alloy with high saturation magnetic flux density and a preparation method of the iron cobalt-based magnetically soft alloy. The iron cobalt-based magnetically soft alloy has a molecular formula of FeaCobSicBdCueMf, wherein M presents one or more of C, P, Cr and Mn, subscripts a, b, c, d, e and f respectively present atomic percentages of corresponding elements and meet the conditions of 5<=a<=82, 5<=b<=82, 3<=c<=15, 4<=d<=13, 0.4<=e<=1.5, 52<=f<=8 and a+b+c+d+e+f=100. Compared with the traditional nanocrystalline magnetically soft alloy, the iron cobalt-based magnetically soft alloy has the characteiristics of higher saturation magnetic flux density and excellent magnetically soft property, and also has higher Curie temperature so as to be applied at a higher temperature.

Description

Has iron cobalt-based non-retentive alloy of high saturation magnetic flux density and preparation method thereof
Technical field
The present invention relates to the field of magnetically soft alloy material in the functional materials, relate in particular to a kind of iron cobalt-based non-retentive alloy with high saturation magnetic flux density and preparation method thereof.
Background technology
Since the electrical pure iron invention of 19th century, soft magnetic materials has obtained paying close attention to widely and using, particularly motor, electrician and electronic applications, soft magnetic materials has indispensable status, unremitting effort through the numerous studies personnel, soft magnetic materials generation upon generation of is constantly weeded out the old and bring forth the new, and constantly satisfies industrialized demand, and particularly the invention of nano-crystal soft magnetic alloy in 1988 plays landmark effect in the soft magnetic materials history.Up to the present, nano-crystal soft-magnetic mainly contains three large systems: and Finemet system (Fe-Si-B-Nb-Cu), Nanoperm system (Fe-M-B-Cu, wherein, M=Zr, Hf, Nb etc.), Hitperm system ((Fe, Co)-M-B-Cu, wherein, M=Zr, Hf, Nb).Wherein, the Finemet alloy is because low, the easy preparation of cost, have good soft magnetic performance, in industrial production, obtained certain application, but the saturation magnetic flux density of alloy is less, need have larger volume when under identical working conditions, using, thereby limit greatly its range of application; The Nanoperm alloy has higher saturation magnetic flux density, but soft magnetic performance is relatively poor.More than two kinds of alloys because Curie temperature is lower, cause it at high temperature to become paramagnetism, so can not at high temperature use, the Hitperm alloy has solved this problem to a certain extent, in this alloy because the adding of cobalt element, cause Curie temperature to rise, so that alloy used under higher temperature, still, the soft magnetic performance of this alloy is relatively poor, its coercive force is up to 200A/m, and iron loss is also higher, has limited the application of this alloy.
In recent years, the invention of high saturation magnetic flux density iron-base soft magnetic alloy Fe-Si-B-P-Cu and Fe-Si-B-C-Cu has solved the low problem of Finemet alloy saturation magnetic flux density, the saturation magnetic flux density of this alloy can reach 1.8T, but with the Finemet alloy phase seemingly, the Curie temperature of this alloy is lower, limited its application at high temperature, for addressing this problem, develop a kind ofly have high-curie temperature, high saturation magnetic flux density, the non-retentive alloy of soft magnetic performance is vital preferably.
Summary of the invention
The objective of the invention is for above-mentioned phenomenon, a kind of iron cobalt-based non-retentive alloy with high saturation magnetic flux density and preparation method thereof is provided.
Realize that the technical scheme that above-mentioned technical purpose adopts is:
Iron cobalt-based non-retentive alloy molecular formula with high saturation magnetic flux density is Fe aCo bSi cB dCu eM f, M is one or more among C, P, Cr, the Mn in the formula, subscript a, b, c, d, e, f are respectively the atomic percent of respective element, and satisfy 5≤a≤82,5≤b≤82,3≤c≤15,4≤d≤13,0.4≤e≤1.5,2≤f≤8; And a+b+c+d+e+f=100, in this alloy, the purity of each composition is more than 99.9%, and wherein, M is preferably P, and adds with the form of Fe-P alloy.
Preparation method's the step of iron cobalt-based non-retentive alloy with high saturation magnetic flux density is as follows:
1. press Fe aCo bSi cB dCu eM fRequired proportional arrangement raw material, wherein a, b, c, d, e, f are respectively the atomic percent of corresponding element, and satisfy 5≤a≤82,5≤b≤82,3≤c≤15,4≤d≤13,0.4≤e≤1.5,2≤f≤8; And a+b+c+d+e+f=100;
2. the raw material for preparing is packed into and carry out abundant melting in the smelting furnace, with the uniform alloy pig of forming component;
3. alloy pig is gone out surface oxide layer and other impurity, and carry out break process;
4. the alloy after the fragmentation is made non-crystaline amorphous metal with getting rid of the band method;
With non-crystaline amorphous metal in heat treatment furnace and under high vacuum condition, 420 oC-550 oThermal treatment 3-60min under the C is quenched to room temperature again, obtains the iron cobalt-based nano-crystalline soft magnetic.
With existing alloy phase ratio, the alloy that alloying constituent of the present invention and preparation method thereof is made has the advantage of the soft magnetic performance of high saturation magnetic flux density, high-curie temperature and excellence simultaneously.
Embodiment
Iron cobalt-based non-retentive alloy molecular formula with high saturation magnetic flux density is Fe aCo bSi cB dCu eM f, M is one or more among C, P, Cr, the Mn in the formula, subscript a, b, c, d, e, f are respectively the atomic percent of respective element, and satisfy 5≤a≤82,5≤b≤82,3≤c≤15,4≤d≤13,0.4≤e≤1.5,2≤f≤8; And a+b+c+d+e+f=100, in this alloy, the purity of each composition is more than 99.9%, and wherein, M is preferably P, and adds with the form of Fe-P alloy.
Preparation method's the step of iron cobalt-based non-retentive alloy with high saturation magnetic flux density is as follows:
1. press Fe aCo bSi cB dCu eM fRequired proportional arrangement raw material, wherein a, b, c, d, e, f are respectively the atomic percent of corresponding element, and satisfy 5≤a≤82,5≤b≤82,3≤c≤15,4≤d≤13,0.4≤e≤1.5,2≤f≤8; And a+b+c+d+e+f=100;
2. the raw material for preparing is packed into and carry out abundant melting in the smelting furnace, with the uniform alloy pig of forming component;
3. alloy pig is gone out surface oxide layer and other impurity, and carry out break process;
4. the alloy after the fragmentation is made non-crystaline amorphous metal with getting rid of the band method;
With non-crystaline amorphous metal in heat treatment furnace and under high vacuum condition, 420 oC-550 oThermal treatment 3-60min under the C is quenched to room temperature again, obtains the iron cobalt-based nano-crystalline soft magnetic.
Below in conjunction with example the present invention is described in further detail:
Embodiment 1
In the present embodiment, the molecular formula of high saturation magnetic flux density iron cobalt-based nano-crystalline soft magnetic is: Fe 42Co 42Si 3B 8Cu 1P 4, preparation process is as follows:
1. choosing purity prepares by above-mentioned alloy requirement at the iron more than 99.9%, cobalt, silicon, ferro-boron, copper, ferrophosphorus;
2. the raw material for preparing is packed into and carry out abundant melting 3 times in the smelting furnace, with the uniform alloy pig of forming component;
3. the alloy pig that the upper step was obtained is removed surface oxide layer and impurity, and alloy pig is carried out the broken less alloy block that forms;
4. alloy block being put into the silica tube lower end has narrow slot, gets rid of tape handling to obtain amorphous alloy strips under argon shield, and the rotating speed of copper roller is 40m/s, the wide 2mm of the band that makes, thick 25 μ m;
5. amorphous band is placed silica tube, vacuumize the rear enclosed silica tube, silica tube is put into heat treatment furnace with 5 oThe speed of C/s is warming up to 450 oBe incubated 5min behind the C, take out silica tube and in cold water, be quenched to room temperature;
6. the band after the thermal treatment is measured its saturation magnetic flux density with VSM, measure its coercive force with the soft magnetism direct-current measuring device again, the saturation magnetic flux density of alloy is 1.75T, and coercive force is 8.2A/m, and the Curie temperature of surveying alloy with DSC is 950 oC.
Embodiment 2
In the present embodiment, the molecular formula of high saturation magnetic flux density iron cobalt-based nano-crystalline soft magnetic is: Fe 41Co 41Si 5B 8Cu 1P 4, preparation process is as follows:
1. choosing purity prepares by above-mentioned alloy requirement at the iron more than 99.9%, cobalt, silicon, ferro-boron, copper, ferrophosphorus;
2. the raw material for preparing is packed into and carry out abundant melting 3 times in the smelting furnace, with the uniform alloy pig of forming component;
3. the alloy pig that the upper step was obtained is removed surface oxide layer and impurity, and alloy pig is carried out the broken less alloy block that forms;
4. alloy block being put into the silica tube lower end has narrow slot, gets rid of tape handling to obtain amorphous alloy strips under argon shield, and the rotating speed of copper roller is 40m/s, the wide 2.2mm of the band that makes, thick 24 μ m;
5. amorphous band is placed silica tube, vacuumize the rear enclosed silica tube, silica tube is put into heat treatment furnace with 5 oThe speed of C/s is warming up to 430 oBe incubated 5min behind the C, take out silica tube and in cold water, be quenched to room temperature;
6. the band after the thermal treatment is measured its saturation magnetic flux density with VSM, measure its coercive force with the soft magnetism direct-current measuring device again, the saturation magnetic flux density of alloy is 1.72T, and coercive force is 8.0A/m, and the Curie temperature of surveying alloy with DSC is 940 oC.
Embodiment 3
In the present embodiment, the molecular formula of high saturation magnetic flux density iron cobalt-based nano-crystalline soft magnetic is: Fe 40Co 40Si 7B 8Cu 1P 4, preparation process is as follows:
1. choosing purity prepares by above-mentioned alloy requirement at the iron more than 99.9%, cobalt, silicon, ferro-boron, copper, ferrophosphorus;
2. the raw material for preparing is packed into and carry out abundant melting 3 times in the smelting furnace, with the uniform alloy pig of forming component;
3. the alloy pig that the upper step was obtained is removed surface oxide layer and impurity, and alloy pig is carried out the broken less alloy block that forms;
4. alloy block being put into the silica tube lower end has narrow slot, gets rid of tape handling to obtain amorphous alloy strips under argon shield, and the rotating speed of copper roller is 40m/s, the wide 2.4mm of the band that makes, thick 25 μ m;
5. amorphous band is placed silica tube, vacuumize the rear enclosed silica tube, silica tube is put into heat treatment furnace with 5 oThe speed of C/s is warming up to 400 oBe incubated 5min behind the C, take out silica tube and in cold water, be quenched to room temperature;
6. the band after the thermal treatment is measured its saturation magnetic flux density with VSM, measure its coercive force with the soft magnetism direct-current measuring device again, the saturation magnetic flux density of alloy is 1.68T, and coercive force is 7.5/m.
Embodiment 4
In the present embodiment, the molecular formula of high saturation magnetic flux density iron cobalt-based nano-crystalline soft magnetic is: Fe 5Co 80Si 4B 7Cu 1C 3, preparation process is as follows:
1. choosing purity prepares by above-mentioned alloy requirement at the iron more than 99.9%, cobalt, silicon, ferro-boron, copper, carbon-iron alloy;
2. the raw material for preparing is packed into and carry out abundant melting 3 times in the smelting furnace, with the uniform alloy pig of forming component;
3. the alloy pig that the upper step was obtained is removed surface oxide layer and impurity, and alloy pig is carried out the broken less alloy block that forms;
4. alloy block being put into the silica tube lower end has narrow slot, gets rid of tape handling to obtain amorphous alloy strips under argon shield, and the rotating speed of copper roller is 40m/s, the wide 2.3mm of the band that makes, thick 26 μ m;
5. amorphous band is placed silica tube, vacuumize the rear enclosed silica tube, silica tube is put into heat treatment furnace with 5 oThe speed of C/s is warming up to 410 oBe incubated 5min behind the C, take out silica tube and in cold water, be quenched to room temperature;
6. the band after the thermal treatment is measured its saturation magnetic flux density with VSM, measure its coercive force with the soft magnetism direct-current measuring device again, the saturation magnetic flux density of alloy is 1.57T, and coercive force is 6.8A/m.
Embodiment 5
In the present embodiment, the molecular formula of high saturation magnetic flux density iron cobalt-based nano-crystalline soft magnetic is: Fe 80Co 5Si 4B 7Cu 1P 3, preparation process is as follows:
1. choosing purity prepares by above-mentioned alloy requirement at the iron more than 99.9%, cobalt, silicon, ferro-boron, copper, ferrophosphorus;
2. the raw material for preparing is packed into and carry out abundant melting 3 times in the smelting furnace, with the uniform alloy pig of forming component;
3. the alloy pig that the upper step was obtained is removed surface oxide layer and impurity, and alloy pig is carried out the broken less alloy block that forms;
4. alloy block being put into the silica tube lower end has narrow slot, gets rid of tape handling to obtain amorphous alloy strips under argon shield, and the rotating speed of copper roller is 40m/s, the wide 2.7mm of the band that makes, thick 25 μ m;
5. amorphous band is placed silica tube, vacuumize the rear enclosed silica tube, silica tube is put into heat treatment furnace with 5 oThe speed of C/s is warming up to 445 oBe incubated 5min behind the C, take out silica tube and in cold water, be quenched to room temperature;
6. the band after the thermal treatment is measured its saturation magnetic flux density with VSM, measure its coercive force with the soft magnetism direct-current measuring device again, the saturation magnetic flux density of alloy is 1.78T, and coercive force is 8.5A/m.

Claims (2)

1. the iron cobalt-based non-retentive alloy with high saturation magnetic flux density is characterized in that its composition satisfies following molecular formula: Fe aCo bSi cB dCu eM f, M is one or more among C, P, Cr, the Mn in the formula, subscript a, b, c, d, e, f are respectively the atomic percent of corresponding element, and satisfy 5≤a≤82,5≤b≤82,3≤c≤15,4≤d≤13,0.4≤e≤1.5,2≤f≤8; And a+b+c+d+e+f=100.
2. preparation method with iron cobalt-based non-retentive alloy of high saturation magnetic flux density as claimed in claim 1 is characterized in that its step is as follows:
By molecular formula Fe aCo bSi cB dCu eM fPreparation raw material, M is one or more among C, P, Cr, the Mn in the formula, subscript a, b, c, d, e, f are respectively the atomic percent of respective element, meet the following conditions: 5≤a≤82,5≤b≤82,3≤c≤15,4≤d≤13,0.4≤e≤1.5,2≤f≤8; And a+b+c+d+e+f=100;
Figure 279826DEST_PATH_IMAGE002
The raw material for preparing packed into carry out abundant melting in the smelting furnace, with the uniform alloy pig of forming component;
Figure 416409DEST_PATH_IMAGE003
Alloy pig is removed surface oxide layer and carried out break process;
Figure 85288DEST_PATH_IMAGE004
Alloy after the fragmentation is made non-crystaline amorphous metal with getting rid of the band method;
Figure 16335DEST_PATH_IMAGE005
With non-crystaline amorphous metal in heat treatment furnace and under high vacuum condition, 420 oC-550 oThermal treatment 3-60min under the C is quenched to room temperature again, obtains the iron cobalt-based nano-crystalline soft magnetic.
CN2012104957889A 2012-11-29 2012-11-29 Iron cobalt-based magnetically soft alloy with high saturation magnetic flux density and preparation method of iron cobalt-based magnetically soft alloy Pending CN102925823A (en)

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Cited By (7)

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CN103310937A (en) * 2013-07-05 2013-09-18 浙江大学 High-saturation magnetic induction density iron cobalt-based nanocrystal soft magnetic powder core and preparation method thereof
CN103794326A (en) * 2014-03-04 2014-05-14 南京信息工程大学 Ferrocobalt-base alloy magnetic powder material and preparation method
CN104087877A (en) * 2014-07-29 2014-10-08 上海理工大学 Co-Fe-Si-B-Cr amorphous alloy and preparation method thereof
JP2015157999A (en) * 2014-02-25 2015-09-03 国立大学法人東北大学 ALLOY COMPOSITION, Fe-BASED NANO-CRYSTAL ALLOY RIBBON, Fe-BASED NANO-CRYSTAL ALLOY POWDER AND MAGNETIC PART
CN109468540A (en) * 2018-10-26 2019-03-15 佛山市安科非晶科技有限公司 A kind of Fe-based nanocrystalline magnetically soft alloy and preparation method thereof
WO2019127867A1 (en) * 2017-12-28 2019-07-04 青岛云路先进材料技术股份有限公司 Iron-cobalt-based nanocrystalline alloy and manufacturing method thereof
CN110993239A (en) * 2019-04-19 2020-04-10 东南大学 Iron-cobalt-based amorphous soft magnetic alloy and preparation method thereof

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Cited By (9)

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CN103310937A (en) * 2013-07-05 2013-09-18 浙江大学 High-saturation magnetic induction density iron cobalt-based nanocrystal soft magnetic powder core and preparation method thereof
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JP2015157999A (en) * 2014-02-25 2015-09-03 国立大学法人東北大学 ALLOY COMPOSITION, Fe-BASED NANO-CRYSTAL ALLOY RIBBON, Fe-BASED NANO-CRYSTAL ALLOY POWDER AND MAGNETIC PART
CN103794326A (en) * 2014-03-04 2014-05-14 南京信息工程大学 Ferrocobalt-base alloy magnetic powder material and preparation method
CN103794326B (en) * 2014-03-04 2016-02-24 南京信息工程大学 A kind of iron cobaltio base alloy magnetic powder material and preparation method
CN104087877A (en) * 2014-07-29 2014-10-08 上海理工大学 Co-Fe-Si-B-Cr amorphous alloy and preparation method thereof
WO2019127867A1 (en) * 2017-12-28 2019-07-04 青岛云路先进材料技术股份有限公司 Iron-cobalt-based nanocrystalline alloy and manufacturing method thereof
CN109468540A (en) * 2018-10-26 2019-03-15 佛山市安科非晶科技有限公司 A kind of Fe-based nanocrystalline magnetically soft alloy and preparation method thereof
CN110993239A (en) * 2019-04-19 2020-04-10 东南大学 Iron-cobalt-based amorphous soft magnetic alloy and preparation method thereof

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