CN105861958A - Low-cost high-conductivity magnet based amorphous nanocrystalline magnetically soft alloy and preparation method thereof - Google Patents
Low-cost high-conductivity magnet based amorphous nanocrystalline magnetically soft alloy and preparation method thereof Download PDFInfo
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Abstract
The invention discloses low-cost high-conductivity magnet based amorphous nanocrystalline magnetically soft alloy and a preparation method thereof. The molecular formula of the magnetically soft alloy is FeaSibBcMdCueNbfM'g, wherein M is Al or Zn, and M' is selected from one or more of Y, Gd or Er; and a, b, c, d, e, f and g are the mass percent, the value ranges meet the conditions that a is larger than or equal to 79 and less than or equal to 88.5, b is larger than or equal to 8 and less than or equal to 11, c is larger than or equal to 0.05 and less than or equal to 2, d is larger than or equal to 0.8 and less than or equal to 1.5, e is larger than or equal to 0.7 and less than or equal to 2.5, f is larger than or equal to 2 and less than or equal to 4, and g is larger than or equal to 0.008 and less than or equal to 0.02. On the basis that the high magnetic conductivity, high Bs and low coercive force and consumption of the magnetically soft alloy are all achieved, the low-cost Al or the Zn is adopted to replace copper partially, the content of Nb is decreased, and trace rare-earth metal is mixed, so that the production cost is reduced. The low-cost high-conductivity magnet based amorphous nanocrystalline magnetically soft alloy is obtained through the preparation method which is simple in process and disclosed by the invention.
Description
Technical field
The invention belongs to magnetically soft alloy material technical field, be specifically related to the high magnetic conduction iron-based amorphous nanometer crystalline of a kind of low cost
Magnetically soft alloy and preparation method thereof.
Background technology
Soft magnetic materials is a kind of conventional functional material, has obtained widely should at industrial circles such as electric power, motor and electronics
With.Since 19th century, magnetically soft alloy has obtained significant progress, successively create electrical pure iron, silicon steel, permalloy,
Ferroaluminium, sendust, ferrocobalt, soft magnetic ferrite and Fe based amorphous nano magnetically soft alloy etc. are a series of
Magnetically soft alloy.
Iron-based amorphous and nanocrystalline soft magnetic alloy has high resistance, high magnetic permeability, low iron loss and higher saturation flux density,
Since FDAC Yoshizawa in 1988 et al. finds Finemet magnetically soft alloy, Fe-based nanocrystalline magnetically soft alloy obtains
To paying close attention to widely, particularly Finemet alloy is with the soft magnetism combination property of its excellence, relatively low industrial cost, letter
Single preparation condition so that it is obtained certain application in electron and electrician industry.But this iron-based amorphous nanometer crystalline is soft
Magnetic alloy is compared with industrial conventional silicon steel, and in saturation induction density Bs, still there is a big difference, accordingly, it would be desirable to system
Industrial needs could be met further for the nano-crystal soft magnetic alloy going out to have high saturation magnetic flux density.
In recent years, being successively found that the Sol-Gel magnetically soft alloy of Fe-Si-B-P-Cu and Fe-Si-B-C-Cu, it is satisfied
1.8T is can reach with magnetic flux density, the saturation flux density improving nano-crystal soft magnetic alloy of high degree, but, this
In alloy, the content of Fe is higher, and amorphous formation ability is more weak, and preparation condition requires harshness so that copper roller rotating speed when getting rid of band
Higher, and the purity requirement to raw material is higher, this just have impact on its application in the industrial production.There are some researches show, use
Nb replaces the P in Fe-Si-B-P-Cu, can avoid P splashing in process of production, and that enhances product performance is consistent
Property, heavy alloyed non-oxidizability can be put forward after adding Nb simultaneously, improve alloy amorphous Forming ability and crystal grain thinning.But
Be the price of Nb costly, there is the problem that the cost of raw material is high, be unfavorable for industrialized production.CN103924169A
The rare-earth yttrium reporting the content the trace that adulterates that reduce Nb on the basis of Fe-Si-B-P-Cu-Nb alloy is modified,
To reduce production cost, simultaneously nanometer crystal alloy product have excellence permeability and low-coercivity, but its saturated magnetic strength
Answer intensity Bs (during H=5A/m) only more than about 1.0T, still need to improve further.
As can be seen here, a kind of high magnetic conducting nanocrystalline magnetically soft alloy easily realizing industrialized production is developed, for nanocrystalline soft
The development and application of magnetic alloy is significant.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, it is an object of the invention to propose one and has composition
Reasonable in design, rare earth element content is relatively low, and preparation processes technique, and simply and product has the iron-based amorphous nanometer crystalline of high magnetic conduction
Magnetically soft alloy；Another object of the present invention is to the preparation method proposing that there is the nano-crystal soft magnetic alloy of above-mentioned character.
Technical scheme: for realizing the first above-mentioned purpose, the present invention by the following technical solutions:
The high magnetic conduction iron-based amorphous and nanocrystalline soft magnetic alloy of a kind of low cost, molecular formula is FeaSibBcMdCueNbfM’g,
Wherein M is Al or Zn, and one or more in Y, Gd or Er of M ', a, b, c, d, e, f, g are matter
Amount percentage ratio, span is respectively as follows: 79≤a≤88.5,8≤b≤11,0.05≤c≤2,0..8≤d≤1.5,0.7≤e≤2.5,2≤f≤4,
0.008≤g≤0.02。
As preferably, the high saturated magnetic induction Bs of described magnetically soft alloy is 1.632～1.74T.
As preferably, the nanocrystalline structure of described magnetically soft alloy includes noncrystal substrate and nanocrystal phase, and described is nanocrystalline
Grain is body-centred cubic α-Fe mutually, and its average grain size is less than 15nm, and wherein preferably crystallite dimension is 11nm.
As the second object of the present invention, present invention also offers the high magnetic conduction iron-based amorphous nanometer crystalline soft magnetism of above-mentioned low cost
The preparation method of alloy, comprises the following steps:
(1) raw material ratio: by pure iron, polysilicon, ferro-boron, fine copper, fine aluminium or pure zinc, ferro-niobium, rare earth metal
In Y, Gd and/or Er carry out dispensing according to the mass percent of each element in described magnetically soft alloy molecular formula, obtain mother
Alloy raw material；
(2) foundry alloy raw material melting: by foundry alloy raw material good for proportioning successively according to a small amount of pure iron and ferro-niobium, a small amount of boron
Y, Gd and/or Er, a small amount of ferro-boron and a small amount of pure iron in ferrum and a small amount of pure iron, copper and aluminum or copper and zinc, rare earth element,
The order of polysilicon and surplus pure iron stacks in mid-frequency melting furnace from bottom to top, adds mid-frequency melting furnace interior greatly
Carrying out melting under compression ring border, the initial monitor system of mid-frequency melting furnace is 35KW, with the speed liter of 0.5-2KW/min
To 130-140KW, it is completely melt to foundry alloy raw material, stops heating, steelmaking slag agent is covered at melted alloy
On solution, after 5-10min, drag for slag, then mid-frequency melting furnace upset is repeated melting 3-5 time, subsequently mid-frequency melting furnace
Power is rapidly decreased to initial monitor system, obtains the mother alloy ingot of composition uniformity after alloy solution solidification；
(3) weight in the Frequency Induction Heating smelting furnace of pocket builder is added after mother alloy ingot step (2) obtained is broken
Molten, reflow process uses steelmaking slag agent cover anti-oxidation on melted alloy solution, drag for slag, then by alloy
Solution sprayed coating, on atwirl copper Kun, quickly cools down with the cooldown rate of 106 DEG C/s and gets rid of the prepared amorphous alloy ribbon of band；
(4) amorphous alloy ribbon is put in annealing furnace and carries out annealing, be cooled to after room temperature both product.
All use steelmaking slag agent to cover during step (2) or step (3) described melting to protect.In melting
During, some element such as Y etc. is oxidized easily, and therefore the melting of a lot of non-crystaline amorphous metals is all to carry out in vacuum environment,
Adding technology difficulty, the present invention uses steelmaking slag agent to cover on melted foundry alloy solution, in atmospheric environment i.e.
The purpose of anti-oxidation can be realized, slag after steelmaking slag agent is covered 5-10min, can be dragged for.
The number of times of the melt back described in step (2) is 3-5 time, and the time of each melting is 45-60min, Qi Zhongyou
Select melting 4 times.
As preferably, the width of the amorphous alloy ribbon in described step (3) is 10 ± 1mm, and thickness is 36 ± 1 μm.
Trace rare-earth element such as Y contained in the alloying component of the present invention, can strengthen the toughness of alloy material, increases molten steel
Mobility.
As preferably, the condition of the annealing in described step (4) is: inert gas atmosphere isothermal annealing or
Person's hydrogen reducing atmosphere isothermal annealing.Before being passed through noble gas or hydrogen, in annealing furnace, vacuum is evacuated to 1 × 10-3Pa,
Being passed through noble gas or hydrogen, the pressure in annealing furnace is 0.02-0.05MPa.
As preferably, described isothermal annealed temperature is 500-550 DEG C, and the time is 0.5-2h.After annealing, quick quenching is extremely
Come out of the stove air-cooled to room temperature for less than 200 DEG C.
Beneficial effect: compared with prior art, the invention have the advantages that
(1) iron-based amorphous and nanocrystalline soft magnetic alloy of the present invention is on the basis of Fe-Si-B-Cu-Nb five elements, with the addition of
Inexpensive Al or Zn and Cu synergism provide position for nanocrystal, the addition of trace rare-earth element and a small amount of Nb
Effect improves nanocrystalline crystallization temperature further, improves magnetically soft alloy amorphous formation ability, is formed nanocrystalline simultaneously
Inhibiting grain growth in journey, has refined crystal grain, is designed by rational composition, and obtained product has high saturated magnetic strength
Answer intensity, low-coercivity and high magnetic permeability；
(2) present invention reduces expensive Nb and rare earth element content, cost of material reduces, preparation process condition
Simply, obtained properties of product concordance is excellent；
(3) present invention uses super chilling technique, and production process is short, production technology is simple, compared with conventional metallurgical industry
Achieve production energy-saving.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further explained.
Embodiment 1Fe82Si10B1.0Al1.2Cu2.3Nb3.5Y0.01Preparation
Molecular formula Fe according to amorphous and nanocrystalline soft magnetic alloy82Si10B1.0Al1.2Cu2.3Nb3.5Y0.01In the quality of each element
Percentage ratio carries out dispensing, obtains foundry alloy raw material.By foundry alloy raw material good for said ratio in mid-frequency melting furnace from bottom
A small amount of pure iron and ferro-niobium, a small amount of ferro-boron and a small amount of pure iron, copper and aluminum, Y, a small amount of ferro-boron and a small amount of it is sequentially added into top
Pure iron, polysilicon and surplus pure iron.The initial monitor system of mid-frequency melting furnace is 35KW, with 0.5-2KW/min
Speed rise to 130-140KW, be completely melt to foundry alloy raw material, stop heating, steelmaking slag agent is covered molten
On the alloy solution melted, drag for slag after 5-10min, then mid-frequency melting furnace upset is repeated melting 3-5 time, intermediate frequency subsequently
The power of smelting furnace is rapidly decreased to initial monitor system, obtains the mother alloy ingot of composition uniformity after alloy solution solidification.
After broken for mother alloy ingot, add the Frequency Induction Heating melting refusion in the stove of pocket builder, reflow process uses
Steelmaking slag agent covers anti-oxidation on melted alloy solution, drags for slag, then alloy solution sprayed coating is quickly being rotated
Copper Kun on, quickly cool down with the cooldown rate of 106 DEG C/s get rid of band prepare amorphous alloy ribbon.Subsequently by thin for above-mentioned alloy
Band is put in vacuum annealing furnace, is evacuated to 1 × 10-3Pa, is then charged with Ar or N20.02-0.05MPa, 500 DEG C of annealing
2h, the most sudden after annealing be cooled to less than 200 DEG C and come out of the stove air-cooled to room temperature, both product.
Prepared amorphous alloy ribbon is amorphous structure, and strip width is 10 ± 1mm, and thickness of strip is 36 ± 1 μm,
Band flat smooth edge is without breach and burr.This alloy thin band, after annealing, occurs in that in amorphous phase matrix
Nanometer crystalline phase, this nanometer crystalline phase is body-centred cubic α-Fe, and the crystallite dimension of nanometer crystalline phase is at about 11nm.Product warp
DC magnetizing characteristic analyser is measured, and magnetization curve presents typical nano-crystal soft magnetic alloy feature, initial permeability μ0
(during H=0.04A/m) is 14.2 ten thousand Gs/Oe, Bs=1.71T ((during H=5A/m), coercivity HCFor 0.8A/m,
Use ac magnetization specificity analysis instrument to measure this magnetically soft alloy and P is lost when 0.88T, 50Hz0.88/50For 0.037W/kg.
Embodiment 2Fe82Si10B1.0Zn1.2Cu2.3Nb3.5Y 0.01Preparation
Molecular formula Fe according to amorphous and nanocrystalline soft magnetic alloy82Si10B1.0Zn1.2Cu2.3Nb3.5Y 0.01In the quality of each element
Percentage ratio carries out dispensing, obtains foundry alloy raw material.By foundry alloy raw material good for said ratio in mid-frequency melting furnace from bottom
A small amount of pure iron and ferro-niobium, a small amount of ferro-boron and a small amount of pure iron, copper and zinc, Y, a small amount of ferro-boron and a small amount of it is sequentially added into top
Pure iron, polysilicon and surplus pure iron.The initial monitor system of mid-frequency melting furnace is 30KW, with 0.5-2KW/min
Speed rise to 130-140KW, be completely melt to foundry alloy raw material, stop heating, steelmaking slag agent is covered molten
On the alloy solution melted, drag for slag after 5-10min, then mid-frequency melting furnace upset is repeated melting 3-5 time, intermediate frequency subsequently
The power of smelting furnace is rapidly decreased to initial monitor system, obtains the mother alloy ingot of composition uniformity after alloy solution solidification.
After broken for mother alloy ingot, add the Frequency Induction Heating melting refusion in the stove of pocket builder, reflow process uses
Steelmaking slag agent covers anti-oxidation on melted alloy solution, drags for slag, then alloy solution sprayed coating is quickly being rotated
Copper Kun on, quickly cool down with the cooldown rate of 106 DEG C/s get rid of band prepare amorphous alloy ribbon.Subsequently by thin for above-mentioned alloy
Band is put in vacuum annealing furnace, is evacuated to 1 × 10-3Pa, is then charged with H20.02-0.05MPa, 500 DEG C of annealing 2h,
The most sudden after annealing be cooled to less than 200 DEG C and come out of the stove air-cooled to room temperature, both product.
Prepared amorphous alloy ribbon is amorphous structure, and strip width is 10 ± 1mm, and thickness of strip is 36 ± 1 μm,
Band flat smooth edge is without breach and burr.This alloy thin band, after annealing, occurs in that in amorphous phase matrix
Nanometer crystalline phase, this nanometer crystalline phase is body-centred cubic α-Fe, and the crystallite dimension of nanometer crystalline phase is at about 13nm.Product warp
DC magnetizing characteristic analyser is measured, and magnetization curve presents typical amorphous soft-magnetic alloy feature, initial permeability μ0
(during H=0.04A/m) is 13.7 ten thousand Gs/Oe, Bs=1.68T (during H=5A/m), coercivity HCFor 0.9A/m, adopt
Measure this magnetically soft alloy with ac magnetization specificity analysis instrument and P is lost when 0.88T, 50Hz0.88/50For 0.039W/kg.
Embodiment 3Fe84Si9B1.0Al1.5Cu1.0Nb3.5Y 0.01Preparation
Molecular formula Fe according to amorphous and nanocrystalline soft magnetic alloy84Si9B1.0Al1.5Cu1.0Nb3.5Y 0.01In the quality hundred of each element
Proportion by subtraction carries out dispensing, obtains foundry alloy raw material.By foundry alloy raw material good for said ratio in mid-frequency melting furnace from bottom to
Top is sequentially added into a small amount of pure iron and ferro-niobium, a small amount of ferro-boron and a small amount of pure iron, copper and aluminum, Y, a small amount of ferro-boron and the purest
Ferrum, polysilicon and surplus pure iron.The initial monitor system of mid-frequency melting furnace is 40KW, with the speed of 0.5-2Kw/min
Rate rises to 130-140KW, is completely melt to foundry alloy raw material, stops heating, covers steelmaking slag agent melted
On alloy solution, drag for slag after 5-10min, then mid-frequency melting furnace upset is repeated melting 3-5 time, intermediate frequency (IF) smelting subsequently
The power of stove is rapidly decreased to initial monitor system, obtains the mother alloy ingot of composition uniformity after alloy solution solidification.
After broken for mother alloy ingot, add the Frequency Induction Heating melting refusion in the stove of pocket builder, reflow process uses
Steelmaking slag agent covers anti-oxidation on melted alloy solution, drags for slag, then alloy solution sprayed coating is quickly being rotated
Copper Kun on, quickly cool down with the cooldown rate of 106 DEG C/s get rid of band prepare amorphous alloy ribbon.Subsequently by thin for above-mentioned alloy
Band is put in vacuum annealing furnace, is evacuated to 1 × 10-3Pa, is then charged with H20.02-0.05MPa, 550 DEG C of annealing 1.5
H, the most sudden after annealing be cooled to less than 200 DEG C and come out of the stove air-cooled to room temperature, both product.
Prepared amorphous alloy ribbon is amorphous structure, and strip width is 10 ± 1mm, and thickness of strip is 36 ± 1 μm,
Band flat smooth edge is without breach and burr.This alloy thin band, after annealing, occurs in that in amorphous phase matrix
Nanometer crystalline phase, this nanometer crystalline phase is body-centred cubic α-Fe, and the crystallite dimension of nanometer crystalline phase is at about 14nm.Product warp
DC magnetizing characteristic analyser is measured, and magnetization curve presents typical amorphous soft-magnetic alloy feature, initial permeability μ0
(during H=0.04A/m) is 14.2 ten thousand Gs/Oe, Bs=1.66T (during H=5A/m), coercivity HCFor 1.0A/m, adopt
Measure this magnetically soft alloy with ac magnetization specificity analysis instrument and P is lost when 0.88T, 50Hz0.88/50For 0.039W/kg.
Embodiment 4Fe81Si10B2.0Al1.5Cu2.0Nb3.5Y 0.01Er0.008Preparation
Molecular formula Fe according to amorphous and nanocrystalline soft magnetic alloy81Si10B2.0Al1.5Cu2.0Nb3.5Y 0.01Er0.008In each element
Mass percent carries out dispensing, obtains foundry alloy raw material.By foundry alloy raw material good for said ratio in mid-frequency melting furnace from
Bottom is sequentially added into ferro-niobium and a small amount of pure iron, a small amount of ferro-boron and a small amount of pure iron, copper and aluminum, Y and Er, a small amount of boron to top
Ferrum and a small amount of pure iron, polysilicon and surplus pure iron.The initial monitor system of mid-frequency melting furnace is 40KW, with 0.5-2
The speed of Kw/min rises to 130-140KW, is completely melt to foundry alloy raw material, stops heating, is covered by steelmaking slag agent
Cover on melted alloy solution, drag for slag after 5-10min, then mid-frequency melting furnace upset is repeated melting 3-5 time, with
The power of rear mid-frequency melting furnace is rapidly decreased to initial monitor system, obtains female conjunction of composition uniformity after alloy solution solidification
Gold ingot casting.
After broken for mother alloy ingot, add the Frequency Induction Heating melting refusion in the stove of pocket builder, reflow process uses
Steelmaking slag agent covers anti-oxidation on melted alloy solution, drags for slag, then alloy solution sprayed coating is quickly being rotated
Copper Kun on, quickly cool down with the cooldown rate of 106 DEG C/s get rid of band prepare amorphous alloy ribbon.Subsequently by thin for above-mentioned alloy
Band is put in vacuum annealing furnace, is evacuated to 1 × 10-3Pa, is then charged with H20.02-0.05MPa, 550 DEG C of annealing 1.5
H, the most sudden after annealing be cooled to less than 200 DEG C and come out of the stove air-cooled to room temperature, both product.
Prepared amorphous alloy ribbon is amorphous structure, and strip width is 10 ± 1mm, and thickness of strip is 36 ± 1 μm,
Band flat smooth edge is without breach and burr.This alloy thin band, after annealing, occurs in that in amorphous phase matrix
Nanometer crystalline phase, this nanometer crystalline phase is body-centred cubic α-Fe, and the crystallite dimension of nanometer crystalline phase is at about 11nm.Product warp
DC magnetizing characteristic analyser is measured, and magnetization curve presents typical amorphous soft-magnetic alloy feature, initial permeability μ0
(during H=0.04A/m) is 15.3 ten thousand Gs/Oe, Bs=1.74T (during H=5A/m), coercivity HCFor 0.8A/m, adopt
Measure this magnetically soft alloy with ac magnetization specificity analysis instrument and P is lost when 0.88T, 50Hz0.88/50For 0.035W/kg.
Comparative example 1Fe84Si9B1.0Cu3.5Nb3.5Y 0.01Preparation
Comparative example 1 (Fe84Si9B1.0Cu3.5Nb3.5Y 0.01) preparation condition substantially with embodiment 1
(Fe82Si10B1.0Al1.2Cu2.3Nb3.5Y 0.01), 1 difference of comparative example 1 and embodiment is: use in comparative example 1
Cu replaces the mass fraction of Al in embodiment 1, and the mass fraction shared by Cu is 3.5%.
Amorphous alloy ribbon prepared by comparative example 1 is amorphous structure, and strip width is 10 ± 1mm, and thickness of strip is
36 ± 1 μm, band flat smooth edge is without breach and burr.This alloy thin band after annealing, amorphous phase base
Occurring in that nanometer crystalline phase in body, this nanometer crystalline phase is body-centred cubic α-Fe, and the crystallite dimension of nanometer crystalline phase is left at 15nm
Right.Product is measured through DC magnetizing characteristic analyser, and magnetization curve presents typical amorphous soft-magnetic alloy feature, initial magnetic
Conductance μ0(during H=0.04A/m) is 12.1 ten thousand Gs/Oe, Bs=1.64T (during H=5A/m), coercivity HCFor 1.1A/m,
Use ac magnetization specificity analysis instrument to measure this magnetically soft alloy and P is lost when 0.88T, 50Hz0.88/50For 0.040W/kg.
Comparative example 2Fe81Si10B2.0Al1.5Cu2.0Nb3.5Preparation
Comparative example 2 (Fe81Si10B2.0Al1.5Cu2.0Nb3.5) preparation condition substantially with embodiment 4
(Fe81Si10B2.0Al1.5Cu2.0Nb3.5Y 0.01Er0.008), 4 differences of comparative example 2 and embodiment are: comparative example
Product prepared in 2 is without rare earth element.
Amorphous alloy ribbon prepared by comparative example 2 is amorphous structure, and strip width is 10 ± 1mm, and thickness of strip is
36 ± 1 μm, band flat smooth edge is without breach and burr.This alloy thin band after annealing, amorphous phase base
Occurring in that nanometer crystalline phase in body, this nanometer crystalline phase is body-centred cubic α-Fe, and the crystallite dimension of nanometer crystalline phase is left at 17nm
Right.Product is measured through DC magnetizing characteristic analyser, and magnetization curve presents typical amorphous soft-magnetic alloy feature, initial magnetic
Conductance μ0(during H=0.04A/m) is 12.7 ten thousand Gs/Oe, Bs=1.66T (during H=5A/m), coercivity HCFor 1.4A/m,
Use ac magnetization specificity analysis instrument to measure this magnetically soft alloy and P is lost when 0.88T, 50Hz0.88/50For 0.065W/kg.
Above description is for implementing some optimal modes of the present invention and other embodiments, the simply technology to the present invention
Design play description example effect, can not limit the scope of the invention with this, those skilled in the art without departing from
In the spirit and scope of technical solution of the present invention, modify, equivalent or combination, all should fall in the protection of the present invention
Within the scope of.
Claims (7)
1. the high magnetic conduction iron-based amorphous and nanocrystalline soft magnetic alloy of a low cost, it is characterised in that: described soft magnetism closes
The molecular formula of gold is FeaSibBcMdCueNbfM’g, wherein M is Al or Zn, and M ' is selected from Y, Gd or Er
In one or more, a, b, c, d, e, f, g are mass percent, and span is respectively as follows: 79≤a≤88.5,
8≤b≤11,0.05≤c≤2,0..8≤d≤1.5,0.7≤e≤2.5,2≤f≤4,0.008≤g≤0.02.
The high magnetic conduction iron-based amorphous and nanocrystalline soft magnetic alloy of low cost the most according to claim 1, it is special
Levy and be: the high saturated magnetic induction Bs of described magnetically soft alloy is 1.632～1.74T.
The high magnetic conduction iron-based amorphous and nanocrystalline soft magnetic alloy of low cost the most according to claim 1, its feature
Being: described magnetically soft alloy includes noncrystal substrate and nanocrystal phase, described nanocrystal is body-centered cubic mutually
α-Fe, its average grain size is less than 15nm, and wherein preferably crystallite dimension is 11nm.
4. the system of the high magnetic conduction iron-based amorphous and nanocrystalline soft magnetic alloy of a low cost according to claim 1
Preparation Method, it is characterised in that: comprise the following steps:
(1) raw material ratio: by pure iron, polysilicon, ferro-boron, fine copper, fine aluminium or pure zinc, ferro-niobium, dilute
Y, Gd and/or Er in earth metal enters according to the mass percent of each element in described magnetically soft alloy molecular formula
Row dispensing, obtains foundry alloy raw material；
(2) foundry alloy raw material melting: by foundry alloy raw material good for proportioning successively according to a small amount of pure iron and ferro-niobium,
Y, Gd and/or Er in a small amount of ferro-boron and a small amount of pure iron, copper and aluminum or copper and zinc, rare earth element, a small amount of boron
The order of ferrum and a small amount of pure iron, polysilicon and surplus pure iron stacks in mid-frequency melting furnace from bottom to top,
Carrying out melting under atmospheric environment in adding mid-frequency melting furnace, the initial monitor system of mid-frequency melting furnace is 35KW,
Rise to 130-140KW with the speed of 0.5-2KW/min, be completely melt to foundry alloy raw material, stop heating,
Steelmaking slag agent is covered on melted alloy solution, drags for slag after 5-10min, then mid-frequency melting furnace is turned over
Turning and repeat melting 3-5 time, the power of mid-frequency melting furnace is rapidly decreased to initial monitor system subsequently, and alloy solution coagulates
The mother alloy ingot of composition uniformity is obtained after Gu；
(3) the Frequency Induction Heating melting of pocket builder is added after mother alloy ingot step (2) obtained is broken
Refusion in the stove, uses steelmaking slag agent to cover anti-oxidation on melted alloy solution, drags for slag in reflow process,
Then, by alloy solution sprayed coating on atwirl copper Kun, quickly cool down with the cooldown rate of 106 DEG C/s and get rid of
Band prepares amorphous alloy ribbon；
(4) amorphous alloy ribbon is put in annealing furnace and carry out annealing, be both cooled to after room temperature
Product.
The preparation of the high magnetic conduction iron-based amorphous and nanocrystalline soft magnetic alloy of low cost the most according to claim 4
Method, it is characterised in that: the width of the amorphous alloy ribbon in described step (3) is 10 ± 0.1mm, thick
Degree is 36 ± 1 μm.
The preparation of the high magnetic conduction iron-based amorphous and nanocrystalline soft magnetic alloy of low cost the most according to claim 4
Method, it is characterised in that: the condition of the annealing in described step (4) is: inert gas atmosphere
Isothermal annealing or hydrogen reducing atmosphere isothermal annealing.
7. according to the high magnetic conduction iron-based amorphous and nanocrystalline soft magnetic alloy of the low cost described in claim 4 or 6
Preparation method, it is characterised in that: described isothermal annealed temperature is 500-550 DEG C, and the time is 0.5-2h.
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