CN108130493A - High saturated magnetic induction, low-coercivity, high magnetic permeability iron cobalt base amorphous alloy material and preparation method thereof - Google Patents
High saturated magnetic induction, low-coercivity, high magnetic permeability iron cobalt base amorphous alloy material and preparation method thereof Download PDFInfo
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Abstract
The present invention provides iron cobalt base amorphous alloy material of high saturated magnetic induction, low-coercivity, high magnetic permeability and preparation method thereof, and ingredient has following expression (Fe1‑zCoz)xMoySiaBb, x, y, z, a, b represent the atom percentage content of each corresponding component respectively in formula, and wherein z is more than 0 and less than or equal to 0.5；X=82-85；Y=0-3；A=1-5；B=11-17, and a+b+y=15-18；A+b+x+y=100.The alloy remains to keep quite high amorphous formation ability in the case where not adding P element.The alloy has superior soft magnet performance and excellent mechanical performance, machinability, corrosion resistance and the relatively low costs such as high saturated magnetic induction, low-coercivity, high magnetic permeability, and can be suitably used for the production procedure of mass product.
Description
Technical field
The invention belongs to amorphous soft magnetic material preparing technical fields, and in particular to high saturated magnetic induction, low
The amorphous soft-magnetic alloy material and preparation method thereof of coercivity, high magnetic permeability.
Background technology
Iron base amorphous magnetically-soft alloy is a kind of new material with special construction and superior function, has splendid soft magnetism
Property (relatively low coercivity, higher magnetic conductivity and relatively low core loss), mechanical performance and the advantages that corrosion resistance, obtain wide
General research and application.And its preparation process is simple, energy conservation and environmental protection, is known as 21 century new green energy saving material, obtains height
The attention of degree and in-depth study have the appearance of industrialization commodity.Such as 1975 by American Association chemical company through license
(Fe, the Co)-Si-B AMORPHOUS ALLOY RIBBONSs prepared using plane foundry engieering realize the quotient of Fe-based amorphous soft magnetic materials for the first time
Industry.Product Metglass2605SA1 quenches state saturation induction density 1.56T, coercivity about 20A/m, extensive use after annealing
In soft magnetic amorphous iron core and other soft magnetic materials fields.
In order to further improve the performance of magnetic element and integrated, people are dedicated to exploitation in recent years has high saturation magnetic
Induction, low-coercivity, high initial permeability amorphous soft-magnetic alloy.By improving containing for ferro element in alloying component
Amount, can further improve the saturation induction density of alloy, while drop low-alloyed cost.For example, in the prior art
Have been reported that Fe atomic percentage contents are non-close to 85% several series Fe-Si-B systems, Fe-Si-B-P systems and Fe-Si-B-P-C systems
Peritectic alloy obtains superior magnetic property and other physical properties.Wherein iron content is the Fe-Si-B-P- (C) of 83-85at%
Alloy system, annealed state alloy saturation induction density is not less than 1.6T, wherein reaching as high as 1.72T, while the alloy system has
Superior soft magnetism, coercivity be less than 10A/m, initial permeability can be more than 10000, the alloy system remain to after annealing keep compared with
Good bending toughness..
Based on all containing P element in the ingredient reported before, it is understood that the addition of P element can lead to the increase of cost,
And P element is volatile, preparation process is required harsh.In addition, Fe-Co-Si-B alloy system annealed state alloy saturation inductions
Intensity is not less than 1.78T, wherein 1.87T is reached as high as, but coercivity is higher, makes practical application.Then we are into one
Step attempts to have synthesized the cobalt base amorphous magnetically soft alloy of iron with high saturated magnetic induction, low-coercivity, high magnetic permeability without P
Material.
Invention content
The present invention overcomes deficiency of the prior art, in order to obtain with high saturated magnetic induction, low-coercivity, height
The amorphous soft-magnetic alloy material of magnetic conductivity obtains the atom conformation of improvement shortrange order feature by adding a small amount of transition elements,
So as to enhance the amorphous formation ability of alloy and corrosion resistance, while by the composition design of science, have alloy excellent
Soft magnetism and annealing bending toughness, to obtain excellent comprehensive performance.
The purpose of the present invention is achieved by following technical proposals.
High saturated magnetic induction, low-coercivity, high magnetic permeability iron cobalt base amorphous alloy material, ingredient have it is as follows
Expression formula (Fe1-zCoz)xMoySiaBb, x, y, z, a, b represent the atom percentage content of each corresponding component, wherein z respectively in formula
More than 0 and less than or equal to 0.5；X=82-85；Y=0-3；A=1-5；B=11-17, and a+b+y=15-18；a+b+x+
Y=100.
Moreover, z=0.1-0.4；X=83-84；Y=1-2；A=1-3；B=14-16, and a+b+y=15-18；
A+b+x+y=100.
It is specifically (Fe0.8Co0.2)84Si1B15、(Fe0.8Co0.2)83Si1B16、(Fe0.95Co0.05)83Si1B16、
(Fe0.9Co0.1)83Si1B16、(Fe0.85Co0.15)83Si1B16、(Fe0.7Co0.3)83Si1B16、(Fe0.6Co0.4)83Si1B16、
(Fe0.8Co0.2)82Mo1Si1B16、(Fe0.8Co0.2)83Mo1Si1B15、(Fe0.8Co0.2)84Mo1Si1B14。
The amorphous soft-magnetic alloy of high Fe content of the present invention is annealed under crystallization temperature under a certain temperature and magnetic field condition,
Crystal phase will not be precipitated；Bending toughness is kept after annealing, doubling is continuous；Alloy saturation induction density (Bs) is not less than after annealing
1.78T, highest reach 1.88T；Corrosion electric current density (Icorr) is not higher than 10 in the sodium-chloride water solution of 25 DEG C of 3wt%-5A/
cm2；The corrosion electric current density ratio of annealed state alloy state of quenching at least reduces an order of magnitude, and coercivity is less than 8A/m.
High saturated magnetic induction, low-coercivity, high magnetic permeability iron cobalt base amorphous alloy material preparation method, according to
Following step carries out：
Step 1: according to the high saturated magnetic induction, low-coercivity, high magnetic permeability iron cobalt base amorphous alloy ingredient
Expression formula carries out dispensing；
Step 2: under the protection of inert gas, raw material step 1 being configured using high vacuum arc-melting furnace is repeatedly
The uniform master alloy spindle of ingredient is smelted into, vacuum degree is not less than 9.5 × 10-3Pa；
Step 3: master alloy made from step 2 is dissolved again under the protection of inert gas, using single roller chilling method
Prepare alloy strip sample；
Step 4: by the amorphous ribbon that step 3 obtains under high vacuum or protective gas atmosphere, and in magnetic field
Stress relief annealing is carried out in environment, obtains the iron cobalt base amorphous alloy of high saturated magnetic induction, low-coercivity, high magnetic permeability
Material.
Moreover, in step 2, manufactured master alloy ingot is cleaned by ultrasonic in alcohol, inert gas is nitrogen, helium or
Person's helium.
Moreover, in step 3, technological parameter prepared by single roller chilling method is：Injection pressure be 0.02-0.04Mpa, copper roller
Rotating speed linear resonance surface velocity be 20-50m/s, 800-1200 DEG C of injection temperation.Prepared by single roller chilling method places in alloy strip sample
The container of master alloy is quartz ampoule, and the quartz ampoule nozzle is polishing to a diameter of 0.7-0.8mm with 1200-2000 sand paper；It is excellent
Be selected as injection pressure be 0.02-0.03Mpa, copper roller rotating speed linear resonance surface velocity be 30-40m/s, 1000-1200 DEG C of injection temperation.
In step 4, such as using vacuum annealing furnace, vacuum degree is not less than 5 × 10-3Pa；Magnetic direction is parallel to band band
Length direction, magnetic field intensity are more than or equal to 10Oe and are less than 500Oe, preferably 100-250Oe.
In step 4, annealing temperature is for 80K below crystallization temperature to the temperature range less than crystallization temperature 150K, such as crystalline substance
Change the either 130K below 100K below crystallization temperature or crystallization temperature of 80K below temperature.
In step 4, the time of annealing is 5-20 minutes.
In step 4, the annealing time is preferably 10-20 minutes.
In step 4, the protective gas is nitrogen, helium or argon gas.
The structural characterization for the iron cobalt base amorphous alloy material that the present invention obtains and performance test：
(1) non crystalline structure characterizes.Two segment bands are fixed on sample stage side by side, freely faces upward, uses X-ray diffraction
Instrument (XRD) detects the structure of sample.XRD diffraction maximums should be single disperse peak.
(2) thermal parameters measure.About 10-20mg band samples are shredded, it is real as being flattened in alumina crucible, use differential
Scan the heating curve that calorimeter (DSC) records alloy.At least one exothermic peak of DSC heating curves, with first exothermic peak
Initial temperature be defined as crystallization temperature Tx(i.e. Tx1)。
(3) magnetic parameter measures.The state that will quench alloy strip (i.e. step 3 prepares alloy strip sample using single roller chilling method)
In Tx(i.e. less than crystallization temperature 80K to less than within the temperature range of crystallization temperature 150K), arbitrary temp moves back between -100K -40K
Fire is no less than 5 minutes to eliminate residual stress.The hysteresis loop of alloy is measured with vibration magnetometer (VSM) to obtain its saturation magnetic
Induction；The coercivity and initial permeability of alloy are measured with B-H instrument.Annealed state alloy saturation induction density (Bs) is not low
In 1.78T.Preferably, Bs reaches as high as 1.88T.
(4) Vickers hardness measures.Alloy strip is pasted onto with chemical glue on glass slide and measures alloy with Vickers hardness instrument
Vickers hardness, load-up condition：Test force 0.98N, retention time 10s.And available electron flying-spot microscope (SEM) observation is hard
The pattern of impression after degree experiment.
Compared with prior art, the beneficial effects of the invention are as follows：
In accordance with the invention it is possible to provide a kind of iron cobalt-based with high saturated magnetic induction, low-coercivity, high magnetic permeability
Amorphous alloy material and preparation method.The alloy remains to keep quite high amorphous formation in the case where not adding P element
Ability.The alloy has the superior soft magnet performance such as high saturated magnetic induction, low-coercivity, high magnetic permeability and excellent
Mechanical performance, machinability, corrosion resistance and relatively low cost, and can be suitably used for the production procedure of mass product.
Description of the drawings
Fig. 1 is the (Fe that embodiment 1 is prepared0.8Co0.2)84Si1B15(Fe0.8Co0.2)83Si1B16Alloy strip
XRD diffraction patterns；
Fig. 2 is the (Fe that embodiment 1 is prepared0.8Co0.2)84Si1B15(Fe0.8Co0.2)83Si1B16AMORPHOUS ALLOY RIBBONS
DSC heating curves；
Fig. 3 is the (Fe that embodiment 1 is prepared0.8Co0.2)84Si1B15AMORPHOUS ALLOY RIBBONS is quenched aspect product and annealing specimen
Hysteresis loop；
Fig. 4 is the (Fe that embodiment 1 is prepared0.8Co0.2)83Si1B16After the 180 ° of doublings of AMORPHOUS ALLOY RIBBONS annealing specimen
Outside drawing (a) and folding line near SEM figure (b)；
Fig. 5 is the (Fe that embodiment 2 is prepared1-xCox)83Si1B16(x=0.05,0.1,0.2,0.3,0.4) alloy bar
The XRD diffraction patterns of band.
Fig. 6 is the (Fe that embodiment 2 is prepared1-xCox)83Si1B16(x=0.05,0.1,0.2,0.3,0.4) amorphous closes
The DSC heating curves of gold bar band；
Fig. 7 is the (Fe that embodiment 2 is prepared1-xCox)83Si1B16(x=0.05,0.1,0.2,0.3,0.4) amorphous closes
Hysteresis loop of the gold bar with annealing specimen；
Fig. 8 is the (Fe that embodiment 2 is prepared1-xCox)83Si1B16(x=0.05,0.1,0.2,0.3,0.4) amorphous closes
The hardness number of gold bar band.Attached drawing is the indentation hardness SEM shape appearance figures of the sample of x=0.3.
Fig. 9 is the (Fe that embodiment 3 is prepared0.8Co0.2)84Mo1Si1B14, (Fe0.8Co0.2)83Mo1Si1B15,
(Fe0.8Co0.2)82Mo1Si1B16The XRD diffraction patterns of alloy strip；
Figure 10 is the (Fe that embodiment 3 is prepared0.8Co0.2)84Mo1Si1B14, (Fe0.8Co0.2)83Mo1Si1B15,
(Fe0.8Co0.2)82Mo1Si1B16The DSC heating curves of AMORPHOUS ALLOY RIBBONS；
Figure 11 is the (Fe that embodiment 3 is prepared0.8Co0.2)84Mo1Si1B14(Fe0.8Co0.2)83Mo1Si1B15Amorphous closes
Hysteresis loop of the gold bar with annealing specimen.
Specific embodiment
Technical scheme of the present invention is further described below by specific embodiment.
1 high saturated magnetic induction of embodiment, low-coercivity, high magnetic permeability iron cobalt base amorphous alloy material
(Fe0.8Co0.2) xSi1B99-xThe preparation method of (x=84,83), includes the following steps：
(1) atomic percent is converted into mass percent according to alloy expression formula and carries out dispensing, weigh corrresponding quality
High-purity Fe, Co, B, Si mixing are for use；
(2) the target component raw material of weighing is placed in high vacuum arc-melting furnace, vacuum is evacuated to 5 × 10-3It is filled with during Pa
Argon gas is as protective atmosphere, and melt back is until ingredient is uniform.Master alloy ingot is broken into after fritter and is surpassed (preferably with alcohol)
Sound cleaning is spare.
(3) clean fritter master alloy is placed in the quartz ampoule with appropriately sized opening, it is used in the present embodiment to put
The container for putting master alloy is quartz ampoule, and the quartz ampoule nozzle is polishing to a diameter of 0.7-0.8mm with 1200-2000 sand paper.
The quartz ampoule is fixed in the induction coil of melting fast cooling device again.Vacuum is evacuated to 8 × 10-3Argon gas is filled with during Pa as protection
Atmosphere is dissolved and is sprayed onto what is rotated with linear resonance surface velocity 40m/s when about 1000 DEG C of temperature with the injection pressure of 0.02MPa after alloy
Chilling prepares alloy strip on copper roller.It is usually to complete to take out alloy strip sample after ten minutes in spray after band cooling.
Alloy strip thickness is 0.01-0.03mm.
(4) alloy strip that step 3 obtains is placed in core magnetic field annealing furnace, argon gas protection is annealed, by alloy strip
In respective Tx1It anneals 10 minutes, magnetic field 200Oe at a temperature of -120K, magnetic field is parallel with strip face.
With the phase structure of X-ray diffractometer characterization alloy strip.(Fe in Fig. 1 the present embodiment0.8Co0.2)84Si1B15With
(Fe0.8Co0.2)83Si1B16The X ray diffracting spectrum of alloy strip, only there are one disperse peaks for each collection of illustrative plates, show the series alloy item
Band is for single amorphous phase.With the thermodynamic parameter of differential scanning calorimeter characterization alloy.Fig. 2 is in the present embodiment
(Fe0.8Co0.2)84Si1B15(Fe0.8Co0.2)83Si1B16The DSC heating curves of alloy strip, there are two heat releases for each curve
Peak, it is two-step reaction to show crystallization process, with first peak value Tx1It is defined as crystallization initial temperature Tx, refer to and summarized in table 1
The crystallization initial temperature of each alloying component.The hysteresis loop of alloy is measured with vibration magnetometer (VSM) to obtain its saturation magnetic strength
Intensity is answered, the coercivity of alloy is measured with B-H instrument.Fig. 3 is (Fe in the present embodiment0.8Co0.2)84Si1B15Alloy strip is quenched aspect
The hysteresis loop of product and annealing specimen, all shows typical soft magnetic materials feature, and saturation induction density Bs is respectively
1.86T and 1.88T, coercivity H are respectively 3.6A/m and 4A/m.Table 1 summarizes the soft magnet performance of each alloying component.Fig. 4 (a)
For (Fe in the present embodiment0.8Co0.2)83Si1B16Outside drawing after the 180 ° of doublings of alloy strip annealing specimen, alloy bar after annealing
Band still remains bending toughness, and doubling is continuous.Fig. 4 (b) is the SEM photograph near folding line after sample doubling, it can be seen that folding line
Shear band has been distributed around, has shown that due to having bending toughness shearing deformation occurs for alloy in the process of bending.
2 high saturated magnetic induction of embodiment, low-coercivity, high magnetic permeability iron cobalt base amorphous alloy material and (Fe1- xCox)84Si1B15The preparation method of (x=0.05,0.1,0.2,0.3,0.4), includes the following steps：
(1) atomic percent is converted into mass percent according to alloy expression formula and carries out dispensing, weigh corrresponding quality
High-purity Fe, Co, B, Si mixing are for use；
(2) the target component raw material of weighing is placed in high vacuum arc-melting furnace, vacuum is evacuated to 5 × 10-3It is filled with during Pa
Argon gas is as protective atmosphere, and melt back is until ingredient is uniform.Master alloy ingot is broken into after fritter and is surpassed (preferably with alcohol)
Sound cleaning is spare.
(3) clean fritter master alloy is placed in the quartz ampoule with appropriately sized opening, it is used in the present embodiment to put
The container for putting master alloy is quartz ampoule, and the quartz ampoule nozzle is polishing to a diameter of 0.7-0.8mm with 1200-2000 sand paper.
The quartz ampoule is fixed in the induction coil of melting fast cooling device again.Vacuum is evacuated to 8 × 10-3Argon gas is filled with during Pa as protection
Atmosphere is dissolved and is sprayed onto what is rotated with linear resonance surface velocity 40m/s when about 1000 DEG C of temperature with the injection pressure of 0.02MPa after alloy
Chilling prepares alloy strip on copper roller.It is usually to complete to take out alloy strip sample after ten minutes in spray after band cooling.
Alloy strip thickness is 0.01-0.03mm.
(4) alloy strip that step 3 obtains is placed in core magnetic field annealing furnace, argon gas protection is annealed, by alloy strip
In respective Tx1It anneals 10 minutes, magnetic field 100Oe at a temperature of -120K, magnetic field is parallel with strip face.
With the phase structure of X-ray diffractometer characterization alloy strip.(Fe in Fig. 6 the present embodiment1-xCox)83Si1B16(x=
0.05,0.1,0.2,0.3,0.4), (Fe1-xCox)84Si1B15The X ray of (x=0.05,0.1,0.2,0.3,0.4) alloy strip
Diffracting spectrum, only there are one disperse peaks for each collection of illustrative plates, and it is for single amorphous phase to show the series alloy band；Use differential scanning
Calorimeter characterizes the thermodynamic parameter of alloy.Fig. 7 is (Fe in the present embodiment1-xCox)83Si1B16(x=0.05,0.1,0.2,
0.3,0.4) the DSC heating curves of AMORPHOUS ALLOY RIBBONS, there are two exothermic peaks for each curve, and it is that two-step is anti-to show crystallization process
It should.Table 1 summarizes the crystallization initial temperature T of each alloying componentx1, Tx2；With first peak value Tx1It is defined as crystallization initial temperature
Tx.The hysteresis loop of alloy is measured with vibration magnetometer (VSM) to obtain its saturation induction density.Fig. 8 is in the present embodiment
(Fe1-xCox)84Si1B16The hysteresis loop of (x=0.05,0.1,0.2,0.3,0.4) annealing specimen, all shows typical soft magnetism
Material characteristics, it is respectively 1.86T that the sample of x=0.2, which has maximum saturation magnetic induction intensity,.Table 1 summarizes to be related in the embodiment
And the soft magnet performance of each alloying component arrived.The Vickers hardness of AMORPHOUS ALLOY RIBBONS, load-up condition are measured with Vickers hardness instrument：Examination
Test power 0.98N, retention time 10s.Fig. 9 summarizes in the present embodiment (Fe1-xCox)83Si1B16(x=0.05,0.1,0.2,0.3,
0.4) size of the Vickers hardness number of non-crystaline amorphous metal sample, it can be seen that the hardness of all samples in more than 950H, is far above
The hardness of traditional silicon steel material, especially (Fe0.7Co0.3)83Si1B16Sample hardness highest.(Fe in attached drawing0.7Co0.3)83Si1B16
The impression SEM figures of sample, which can see around impression, there is skid wire, shows that alloy has very good toughness.
3 high saturated magnetic induction of embodiment, low-coercivity, high magnetic permeability iron cobalt base amorphous alloy material
(Fe0.8Co0.2)84Mo1Si1B14, (Fe0.8Co0.2)83Mo1Si1B15, (Fe0.8Co0.2)82Mo1Si1B16Preparation method, including such as
Lower step：
(1) atomic percent is converted into mass percent according to alloy expression formula and carries out dispensing, weigh corrresponding quality
High-purity Fe, Co, Mo, B, Si mixing are for use；
(2) the target component raw material of weighing is placed in high vacuum arc-melting furnace, vacuum is evacuated to 5 × 10-3It is filled with during Pa
Argon gas is as protective atmosphere, and melt back is until ingredient is uniform.Master alloy ingot is broken into after fritter and is surpassed (preferably with alcohol)
Sound cleaning is spare.
(3) clean fritter master alloy is placed in the quartz ampoule with appropriately sized opening, it is used in the present embodiment to put
The container for putting master alloy is quartz ampoule, and the quartz ampoule nozzle is polishing to a diameter of 0.7-0.8mm with 1200-2000 sand paper.
The quartz ampoule is fixed in the induction coil of melting fast cooling device again.Vacuum is evacuated to 8 × 10-3Argon gas is filled with during Pa as protection
Atmosphere is dissolved and is sprayed onto what is rotated with linear resonance surface velocity 40m/s when about 1000 DEG C of temperature with the injection pressure of 0.02MPa after alloy
Chilling prepares alloy strip on copper roller.It is usually to complete to take out alloy strip sample after ten minutes in spray after band cooling.
Alloy strip thickness is 0.01-0.03mm.
(4) alloy strip that step 3 obtains is placed in core magnetic field annealing furnace, argon gas protection is annealed, by alloy strip
In respective Tx1It anneals 10 minutes, magnetic field 250Oe at a temperature of -120K, magnetic field is parallel with strip face.
With the phase structure of X-ray diffractometer characterization alloy strip.Figure 10 is (Fe in the present embodiment0.8Co0.2)84Mo1Si1B14, (Fe0.8Co0.2)83Mo1Si1B15, (Fe0.8Co0.2)82Mo1Si1B16The X ray diffracting spectrum of alloy strip, it is each to scheme
Only there are one disperse peaks for spectrum, and it is for single amorphous phase to show the series alloy band；It is characterized and closed with differential scanning calorimeter
The thermodynamic parameter of gold.Figure 11 is Fe in the present embodiment0.8Co0.2)84Mo1Si1B14, (Fe0.8Co0.2)83Mo1Si1B15,
(Fe0.8Co0.2)82Mo1Si1B16The DSC heating curves of AMORPHOUS ALLOY RIBBONS, there are two exothermic peaks for each curve, show crystallization mistake
Cheng Junwei two-steps are reacted.Table 1 summarizes the crystallization initial temperature T of each alloying componentx1, Tx2；With first peak value Tx1It is defined as crystalline substance
Change initial temperature Tx.The hysteresis loop of alloy is measured with vibration magnetometer (VSM) to obtain its saturation induction density.Figure 11 is
Fe in the present embodiment0.8Co0.2)84Mo1Si1B14, (Fe0.8Co0.2)83Mo1Si1B15, (Fe0.8Co0.2)82Mo1Si1B16Annealing specimen
Hysteresis loop, all show typical soft magnetic materials feature, Fe0.8Co0.2)84Mo1Si1B14Sample have maximum saturation magnetic
Induction is respectively 1.83T.Table 1 summarizes the soft magnet performance of each alloying component.
Crystallization temperature (the T of alloying component in 1 embodiment 1 to 3 of tablex), microstructure and saturation induction after annealing are strong
Spend (Bs), coercivity (Hc), initial permeability (μ i)
Prepared by component and technique according to the content of present invention adjustment material, the material of gained is shown and embodiment
After amorphous soft-magnetic alloy annealing, crystal phase will not be precipitated in basically identical property, and good toughness and higher hard is kept after annealing
Degree；Alloy saturation induction density (Bs) reaches 1.88T not less than 1.78T, highest after annealing, and coercivity is in 8A/m hereinafter, such as
2—7A/m；Initial permeability is more than 15000.
Illustrative description has been done to the present invention above, it should explanation, in the situation for the core for not departing from the present invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (10)
1. the iron cobalt base amorphous alloy material of high saturated magnetic induction, low-coercivity, high magnetic permeability, it is characterised in that：Its into
Dividing has following expression (Fe1-zCoz)xMoySiaBb, x, y, z, a, b represent the atomic percent of each corresponding component respectively in formula
Content, wherein z are more than 0 and less than or equal to 0.5；X=82-85；Y=0-3；A=1-5；B=11-17, and a+b+y=
15—18；A+b+x+y=100；
It anneals under magnetic field condition, bending toughness is kept after annealing, alloy saturation induction density (Bs) is not low after annealing
In 1.78T, highest reaches 1.88T；Coercivity is in 8A/m hereinafter, initial permeability is more than 15000.
2. the iron cobalt base amorphous alloy material of high saturated magnetic induction according to claim 1, low-coercivity, high magnetic permeability
Material, it is characterised in that：Z=0.1-0.4；X=83-84；Y=1-2；A=1-3；B=14-16, and a+b+y=15-
18；A+b+x+y=100.
3. the iron cobalt base amorphous alloy material of high saturated magnetic induction according to claim 1, low-coercivity, high magnetic permeability
Material, it is characterised in that：Iron cobalt base amorphous alloy material is (Fe0.8Co0.2)84Si1B15、(Fe0.8Co0.2)83Si1B16、
(Fe0.95Co0.05)83Si1B16、(Fe0.9Co0.1)83Si1B16、(Fe0.85Co0.15)83Si1B16、(Fe0.7Co0.3)83Si1B16、
(Fe0.6Co0.4)83Si1B16、(Fe0.8Co0.2)82Mo1Si1B16、(Fe0.8Co0.2)83Mo1Si1B15、(Fe0.8Co0.2)84Mo1Si1B14。
4. the iron cobalt base amorphous alloy material of high saturated magnetic induction according to claim 1, low-coercivity, high magnetic permeability
Material, it is characterised in that：Coercivity is 2-7A/m, corrosion electric current density (Icorr) in the sodium-chloride water solution of 25 DEG C of 3wt%
Not higher than 10-5A/cm2。
5. prepare the iron cobalt-based of the high saturated magnetic induction as described in Claims 1-4 is any, low-coercivity, high magnetic permeability
The method of amorphous alloy material, it is characterised in that：It carries out as steps described below：
Step 1: the iron cobalt base amorphous alloy ingredient according to the high saturated magnetic induction, low-coercivity, high magnetic permeability is expressed
Formula carries out dispensing；
Step 2: under the protection of inert gas, step 1 is configured using high vacuum arc-melting furnace raw material melt back
Into the uniform master alloy spindle of ingredient, vacuum degree is not less than 9.5 × 10-3Pa；
Step 3: master alloy made from step 2 is dissolved again under the protection of inert gas, prepared using single roller chilling method
Alloy strip sample, technological parameter prepared by single roller chilling method are：Injection pressure be 0.02-0.04Mpa, copper roller rotating speed surface line
Speed is 20-50m/s, 800-1200 DEG C of injection temperation；
Step 4: by the amorphous ribbon that step 3 obtains under high vacuum or protective gas atmosphere, and in magnetic field environment
Middle carry out stress relief annealing, annealing temperature is for 80K below crystallization temperature to the temperature range less than crystallization temperature 150K, magnetic field side
To be parallel to band band length direction, magnetic field intensity is 10-500Oe, obtains high saturated magnetic induction, low-coercivity, Gao Ci
The iron cobalt base amorphous alloy material of conductance.
6. the iron cobalt base amorphous alloy material of high saturated magnetic induction according to claim 5, low-coercivity, high magnetic permeability
The preparation method of material, it is characterised in that：In the step 3, injection pressure be 0.02-0.03Mpa, copper roller rotating speed surface line
Speed is 30-40m/s, 1000-1200 DEG C of injection temperation.
7. the iron cobalt base amorphous alloy material of high saturated magnetic induction according to claim 5, low-coercivity, high magnetic permeability
The preparation method of material, it is characterised in that：In the step 4, annealing temperature is 80K or crystallization temperature below crystallization temperature
130K below following 100K or crystallization temperature.
8. the iron cobalt base amorphous alloy material of high saturated magnetic induction according to claim 5, low-coercivity, high magnetic permeability
The preparation method of material, it is characterised in that：In the step 4, magnetic field intensity 100-250Oe.
9. the iron cobalt base amorphous alloy material of high saturated magnetic induction according to claim 5, low-coercivity, high magnetic permeability
The preparation method of material, it is characterised in that：In the step 4, using vacuum annealing furnace, vacuum degree is not less than 5 × 10-3Pa,
The protective gas is nitrogen, helium or argon gas, and the time of annealing is 5-20 minutes, preferably 10-20 minutes.
10. the iron cobalt base amorphous alloy of high saturated magnetic induction according to claim 5, low-coercivity, high magnetic permeability
The preparation method of material, it is characterised in that：In the step 2, manufactured master alloy ingot is cleaned by ultrasonic in alcohol, it is lazy
Property gas be nitrogen, helium or helium；In the step 3, prepared by single roller chilling method places female close in alloy strip sample
The container of gold is quartz ampoule, and the quartz ampoule nozzle is polishing to a diameter of 0.7-0.8mm with 1200-2000 sand paper.
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