CN107419199A - A kind of stanniferous soft magnetic iron-based nano-amorphous alloy and preparation method thereof - Google Patents
A kind of stanniferous soft magnetic iron-based nano-amorphous alloy and preparation method thereof Download PDFInfo
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- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
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- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
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- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
Abstract
The invention belongs to magnetic metal material technical field, more particularly to a kind of stanniferous soft magnetic iron-based nano-amorphous alloy and preparation method thereof, the alloy adds a small amount of Sn to prepare on the basis of Fe (Mo, Nb, Cr) (P, C, B, Si) Amorphous Alloy, and preparation method comprises the following steps：(1) melting；(2) quick solidification；(3) anneal.Between iron tin bianry alloy has very wide phase separation region on composition, tin element is added in Fe-based amorphous alloy, is easily formed phase separation structure, Fu Tie areas and Pin Tie areas are formed in microstructure.The uneven distribution of ferro element, the nucleation rate of α Fe phases can be improved in annealing process, and limit growing up for α Fe crystal grain so that formed nano-amorphous alloy after non-crystaline amorphous metal annealing, obtain high saturation magnetization, while keep low coercivity.
Description
Technical field
The invention belongs to magnetic metal material technical field, and in particular to a kind of stanniferous soft magnetic iron base nanometer crystal-non-
Peritectic alloy and preparation method thereof.
Background technology
Fe-based amorphous alloy is the novel magnetic metal material that recent decades develop, and has typical soft magnetism special
Sign, including high saturation magnetization and low coercivity etc., there is sizable use value and be widely applied prospect.Iron
The magnetic property of base noncrystal alloy is relevant with composition, by changing the species and content of alloying element, can adjust Fe-based amorphous conjunction
The magnetic property of gold.More appropriate alloy proportion is found, is one of approach for obtaining high magnetic characteristics Fe-based amorphous alloy.But iron-based is non-
Peritectic alloy composition is various, it is difficult to there is the composition proportion criterion of the optimization magnetic property of universality.Increase iron content is currently known,
Saturation magnetization can be effectively improved, but iron content increases the decline that may cause amorphous formation ability.Other alloy members
The validity of influence of the element to Fe-based amorphous magnetic property is limited in the non-crystaline amorphous metal of some special components, without pervasive
Property.Except changing composition, process annealing is carried out to Fe-based amorphous alloy, can also optimize its magnetic property within the specific limits, especially
It is that effect is more apparent in terms of reducing coercivity.But the improvement of this method is limited, the magnetic property of alloy can not be made to be dashed forward
The lifting of broken property.
The method of another effectively lifting Fe-based amorphous alloy soft magnet performance is to prepare nanocrystalline and amorphous composite alloy.
Generate that ferromagnetic α-Fe are nanocrystalline in Fe-based amorphous alloy, the overall saturation of alloy is improved using α-Fe high magnetic intensity
The intensity of magnetization.Also, the region between nanocrystalline is still non-crystaline amorphous metal, so its coercivity still may remain in reduced levels.
This nanocrystalline and amorphous alloy is due to the saturation magnetization close to traditional rolling silicon steel sheet and far below silicon steel sheet
Coercivity, silicon steel sheet is substituted and has been widely used in transformer fe core material.
The preparation of iron based nano crystal-non-crystaline amorphous metal is typically that non-crystaline amorphous metal is annealed, and brings it about crystallization, is analysed
Go out α-Fe crystal grain.By the control to annealing process, the quantity and volume of the crystal of precipitation can be regulated and controled.The volume of α-Fe crystal grain
Smaller, quantity is more, and the saturation magnetization of alloy is higher.But the nanocrystalline limited amount for formation of annealing is in alloy
The nucleation rate of α-Fe phases.Increase nucleation rate, can be by toward defect is introduced in amorphous, forming core core being caused, to increase crystalline phase
Forming core point quantity, specific method include non-crystaline amorphous metal is irradiated etc. with high-power electron beam or neutron beam.But these sides
Method cost is high, and efficiency is low, is not suitable for producing in enormous quantities.Therefore, it is necessary to seek a kind of increase α of new low-cost high-efficiency-
The method that Fe phases are formed, to prepare iron based nano crystal-non-crystaline amorphous metal of more high magnetic characteristics.
The content of the invention
Invention broadly provides a kind of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy and preparation method thereof, pass through
A small amount of tin element is added in the alloy, number of nuclei of the increase α-Fe phases in annealing process, is received to obtain more α-Fe
Meter Jing, the lifting significant effect to soft magnet performance.Its technical scheme is as follows：
A kind of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy, it is by Fe, Mo, Nb, Cr, Sn, P, C, B and Si structure
Into formula be FeaMobNbcCrdSnePfCgBhSiiAlloy, wherein a, b, c, d, e, f, g, h and i is respectively each self-corresponding original
Sub- degree, and 70≤a≤85,0≤b≤10,0≤c≤10,0≤d≤10,0 ＜ e≤5,0≤f≤20,0≤g≤
20th, 0≤h≤20,0≤i≤20, and 75≤a+b+c+d+e≤90,10≤f+g+h+i≤25, a+b+c+d+e+f+g+h+i=
100。
The content of tin element is different according to the composition of Fe-based amorphous alloy in the alloy and otherwise varied, the original of tin element
Son is more excessive than unsuitable, should ensure that tin element is generally evenly distributed in the alloy, and keeps the nascent Crystallization Phases of non-crystaline amorphous metal
Still it is α-Fe.
The nanocrystalline principle of high density can be formed in the alloy to be, iron tin binary alloy has very wide on composition
Phase separation region between, also, the element such as P, C, B, Si can further expand its phase separation region.Therefore, in Fe-based amorphous conjunction
Tin element is added in gold, is easily formed phase separation structure, Fu Tie areas and Pin Tie areas are formed in microstructure.Fu Tie areas therein
α-Fe embryos is easily formed, and then develops into α-Fe nanocrystals.Meanwhile the caused Fu Tiequ that is separated, its area size
Generally in nanoscale, during α-Fe crystal grain is grown up, the diffusion length of ferro element is limited, and the α-Fe of formation are nanocrystalline to be not easy
Grow up.So in stanniferous Fe-based amorphous alloy, substantial amounts of α-Fe grain nucleations, and can limitation α-Fe crystal grain can be formed
Size.
A kind of preparation method of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy, comprises the following steps：
(1) according to formula ratio preparation raw material, then mixed；
(2) raw material prepared is subjected to melt back in smelting furnace, until obtaining the uniform foundry alloy of composition；
(3) by foundry alloy remelting, then by casting, quenching method or get rid of band method carry out quick solidification be made it is block or thin
The non-crystaline amorphous metal of banding；
(4) non-crystaline amorphous metal is annealed, annealing temperature is higher than 10-50 DEG C of amorphous alloy crystallization start temperature, annealing
Time is 60-600s, obtains stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy.
Preferably, in step (2) in melting or step (3) during remelting, first vacuumize and be re-filled with inert gas and protected,
First it will be evacuated to 10 in smelting furnace-3Below Pa, inert gas is re-filled with to 0.02MPa is more than and carries out melting.
Preferably, casting is specifically that foundry alloy is placed in electric arc furnaces or induction furnace and melted, then in step (3)
Block is frozen into suction or penetrating cooling mould, obtains non-crystaline amorphous metal.
Preferably, quenching method is specifically that foundry alloy is sealed in vacuum tube in step (3), by vacuum tube and female conjunction
After gold is heated to foundry alloy fusing together, block is frozen into coolant of quenching, obtains non-crystaline amorphous metal.
Preferably, it is specifically that foundry alloy is placed in the porose crucible in bottom that band method is got rid of in step (3), will after fusing
Foundry alloy liquid is sprayed onto at a high speed on the chill roll of rotation, and quick solidification forms strip, obtains non-crystaline amorphous metal.
Preferably, annealing temperature is 400-700 DEG C in step (4).
Using such scheme, the present invention has advantages below：
(1) by introducing phase separation element on the basis of Fe- (Mo, Nb, Cr)-(P, C, B, Si) Amorphous Alloy
Sn, the microstructure with phase separation structure is formed in non-crystaline amorphous metal, that is, Fu Tie areas and Pin Tie areas are formed, so as to increase α-Fe
The mutually number of nuclei in annealing process, and growing up for α-Fe crystal grain is limited, high saturation magnetization is obtained, while keep low
Coercivity, the lifting positive effect to soft magnet performance；
(2) noble element is free of in alloying component of the present invention, raw material used in alloy melting to purity requirement not
Height, the raw material of technical purity can be used to be prepared, cost of material is low., can be and alloy preparation method of the present invention is succinct
Realized in common device, easily apply and promote in the industrial production.
Embodiment
Experimental method in following examples is conventional method unless otherwise required, involved experiment reagent and material
Material is routine biochemistry reagent and material unless otherwise required.
A kind of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy, it is by Fe, Mo, Nb, Cr, Sn, P, C, B and Si structure
Into formula be FeaMobNbcCrdSnePfCgBhSiiAlloy, wherein a, b, c, d, e, f, g, h and i is respectively each self-corresponding original
Sub- degree, and 70≤a≤85,0≤b≤10,0≤c≤10,0≤d≤10,0 ＜ e≤5,0≤f≤20,0≤g≤
20th, 0≤h≤20,0≤i≤20, and 75≤a+b+c+d+e≤90,10≤f+g+h+i≤25, a+b+c+d+e+f+g+h+i=
100。
The preparation method of above-mentioned stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy, it comprises the following steps：
(1) according to formula ratio preparation raw material, then mixed；
(2) raw material prepared is subjected to melt back in smelting furnace, first vacuumizes during melting and be re-filled with inert gas and enter
Row protection, i.e., first will be evacuated to 10 in smelting furnace-3Below Pa, inert gas is re-filled with to 0.02MPa is more than and carries out melting, directly
To obtaining the uniform foundry alloy of composition；
(3) by foundry alloy remelting, then foundry alloy is placed in electric arc furnaces or induction furnace by casting and melted, then
Block amorphous alloy is frozen into suction or penetrating cooling mould, or foundry alloy is sealed in vacuum tube by quenching method, will
After vacuum tube and foundry alloy are heated to foundry alloy fusing together, block amorphous alloy is frozen into coolant of quenching, or by getting rid of
Foundry alloy is placed in the porose crucible in bottom by band method, is sprayed onto foundry alloy liquid at a high speed on the chill roll of rotation, soon after fusing
Rapid hardening solid is into strip non-crystaline amorphous metal；
(4) non-crystaline amorphous metal is annealed, annealing temperature is higher than 10-50 DEG C of amorphous alloy crystallization start temperature, annealing
Temperature is 400-700 DEG C, annealing time 60-600s, obtains stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy.
Embodiment 1
According to Fe72Mo3Sn1P8.7C7.0B5Si3.3Alloying component the atomic percent of each element is converted into quality percentage
Dispensing is carried out than after.The raw material includes pure element simple substance and its intermediate alloy, and the purity of raw material will in general industry purity
In asking, total atomic percent of impurity is no more than 2% in alloy.
It is placed in after above-mentioned raw materials are mixed in quartz ampoule, is put into the induction coil in vaccum sensitive stove and carries out melting.First
10 will be evacuated in stove-3Below Pa, heated after being re-filled with 0.04MPa high-purity argon gas.Melting 6 times is repeated, obtains composition
Uniform foundry alloy, alloy surface is clean and metal luster.
Non-crystaline amorphous metal block is prepared with casting, it is consistent when the control of furnace atmosphere is with melting.Foundry alloy is placed in bottom
In porose quartz ampoule, hole diameter about 1mm, quartz ampoule being placed in induction coil, quartz ampoule upper end connects with outside argon gas,
The pressure of external argon gas is higher 0.03MPa than the pressure of argon gas in stove；After alloy melting, connecting valve is opened, makes outside argon gas
Into quartz ampoule, aluminium alloy is sprayed into copper mold, diameter 3mm shaft-like non-crystaline amorphous metal is made.XRD inspections are carried out to alloy sample
Survey, only " steamed bun peak " occur in the XRD spectrums measured, without sharp diffraction maximum, it was demonstrated that the sample is non-crystaline amorphous metal.
The T of the non-crystaline amorphous metal is measured using DSCxTemperature.Non-crystaline amorphous metal is encapsulated in vitreosil pipe, annealing temperature is set
520 DEG C are set to, annealing time 180s.XRD detections are carried out to the sample after annealing, find the diffraction of α-Fe phases wherein occur
Peak.Observed under transmission electron microscope, it is seen that intensive α-Fe crystal grain is formed in sample, size is no more than 20nm.Pass through comprehensive physical property
Measuring system (PPMS) carries out magnetic property detection to the sample after annealing, it is known that its saturation magnetization is more than 1.4T, than not adding
Enter the Fe of tin73Mo3P8.7C7.0B5Si3.3Non-crystaline amorphous metal saturation magnetization is higher by 0.2T, and coercivity remains at below 5A/m.
Embodiment 2
According to Fe75.0Sn1.0C7.0Si3.3B5.0P8.7Alloying component the atomic percent of each element is converted into quality hundred
Divide and than then carry out dispensing.The raw material includes pure element simple substance and its intermediate alloy, and the purity of raw material is in general industry purity
In it is required that, total atomic percent of impurity is no more than 2% in alloy.
It is placed in after above-mentioned raw materials are mixed in quartz ampoule, is put into the induction coil in vaccum sensitive stove and carries out melting.First
10 will be evacuated in stove-3Below Pa, heated after being re-filled with 0.05MPa high-purity argon gas.Melting 5 times is repeated, obtains composition
Uniform foundry alloy, alloy surface is clean and metal luster.
Amorphous alloy ribbon is prepared using band method is got rid of：Alloy pig is placed in the foraminate quartz ampoule in bottom, hole diameter
About 1mm, quartz ampoule is placed in induction coil, quartz ampoule upper end connects with outside argon gas, and the pressure of external argon gas is than argon in stove
The high 0.03MPa of pressure of gas；After alloy melting, connecting valve is opened, outside argon gas is entered quartz ampoule, aluminium alloy is sprayed onto
The cooling roller surface of rotation, the rotating speed of chill roll is 30m/s, and aluminium alloy solidifies to form wide 2mm, thick 26 μm alloy thin band.It is right
Alloy thin band carries out XRD detections, only " steamed bun peak " occurs in the XRD spectrums measured, without sharp diffraction maximum, it was demonstrated that the strip is non-
Peritectic alloy.
The T of the non-crystaline amorphous metal is measured using DSCxTemperature.Amorphous thin ribbon is encapsulated in vitreosil pipe and annealed, temperature
540 DEG C of degree, it is incubated 240s.XRD detections are carried out to the strip after annealing and confirm that Crystallization Phases therein are α-Fe.Under transmission electron microscope
Observation, it is seen that after annealing in strip the size of α-Fe crystal grain in below 30nm.Magnetic is carried out to the strip after annealing by PPMS
It can detect, it is possible to find its saturation magnetization is more than 1.6T, than not stanniferous Fe76.0C7.0Si3.3B5.0P8.7Non-crystaline amorphous metal is satisfied
About 0.1T is higher by with the intensity of magnetization, while coercivity is maintained at below 2A/m.
Embodiment 3
According to Fe72Mo5Cr2Sn0.5P12C7B1Si0.5Alloying component the atomic percent of each element is converted into quality hundred
Divide and than then carry out dispensing.The raw material includes pure element simple substance and its intermediate alloy, and the purity of raw material is in general industry purity
In it is required that, total atomic percent of impurity is no more than 2% in alloy.
It is placed in after above-mentioned raw materials are mixed in quartz ampoule, is put into the induction coil in vaccum sensitive stove and carries out melting.First
10 will be evacuated in stove-3Below Pa, heated after being re-filled with 0.04MPa high-purity argon gas.Melting 6 times is repeated, obtains composition
Uniform foundry alloy, alloy surface is clean and metal luster.
Non-crystaline amorphous metal block is prepared using quenching method：Foundry alloy is sealed in vacuum tube by alloy pig, by vacuum tube and
After foundry alloy is heated to foundry alloy fusing together, diameter 1.5mm block is frozen into coolant of quenching.Alloy thin band is carried out
XRD is detected, and only " steamed bun peak " occurs in the XRD spectrums measured, without sharp diffraction maximum, it was demonstrated that the strip is non-crystaline amorphous metal.
The T of the non-crystaline amorphous metal is measured using DSCxTemperature.Amorphous thin ribbon is encapsulated in vitreosil pipe and annealed, temperature
640 DEG C of degree, it is incubated 120s.XRD detections are carried out to the strip after annealing and confirm that Crystallization Phases therein are α-Fe.Under transmission electron microscope
Observation, it is seen that after annealing in strip the size of α-Fe crystal grain in below 30nm.Magnetic is carried out to the strip after annealing by PPMS
It can detect, it is possible to find its saturation magnetization is more than 1.5T, than not stanniferous Fe72.5Mo5Cr2P12C7B1Si0.5Non-crystaline amorphous metal
Saturation magnetization is higher by about 0.1T, while coercivity is maintained at below 2A/m.
Embodiment 4
According to Fe78Nb1Cr2Sn2P11B5Si1Alloying component the atomic percent of each element is converted into mass percent
After carry out dispensing.The raw material includes pure element simple substance and its intermediate alloy, and the purity of raw material is in general industry purity requirement
Interior, total atomic percent of impurity is no more than 2% in alloy.
It is placed in after above-mentioned raw materials are mixed in quartz ampoule, is put into the induction coil in vaccum sensitive stove and carries out melting.First
10 will be evacuated in stove-3Below Pa, heated after being re-filled with 0.04MPa high-purity argon gas.Melting 6 times is repeated, obtains composition
Uniform foundry alloy, alloy surface is clean and metal luster.
Non-crystaline amorphous metal block is prepared with casting, it is consistent when the control of furnace atmosphere is with melting.Foundry alloy is placed in bottom
In porose quartz ampoule, hole diameter about 1mm, quartz ampoule being placed in induction coil, quartz ampoule upper end connects with outside argon gas,
The pressure of external argon gas is higher 0.03MPa than the pressure of argon gas in stove；After alloy melting, connecting valve is opened, makes outside argon gas
Into quartz ampoule, aluminium alloy is sprayed into copper mold, diameter 2mm shaft-like non-crystaline amorphous metal is made.XRD inspections are carried out to alloy sample
Survey, only " steamed bun peak " occur in the XRD spectrums measured, without sharp diffraction maximum, it was demonstrated that the sample is non-crystaline amorphous metal.
The T of the non-crystaline amorphous metal is measured using DSCxTemperature.Non-crystaline amorphous metal is encapsulated in vitreosil pipe, annealing temperature is set
520 DEG C are set to, annealing time 180s.XRD detections are carried out to the sample after annealing, find the diffraction of α-Fe phases wherein occur
Peak.Observed under transmission electron microscope, it is seen that intensive α-Fe crystal grain is formed in sample, size is no more than 20nm.Pass through comprehensive physical property
Measuring system (PPMS) carries out magnetic property detection to the sample after annealing, it is known that its saturation magnetization is more than 1.4T, than not adding
Enter the Fe of tin80Nb1Cr2P11B5Si1Non-crystaline amorphous metal saturation magnetization is higher by 0.2T, and coercivity remains at below 5A/m.
Embodiment 5
According to Fe70Nb9Sn1P12C3B5Alloying component that the atomic percent of each element is converted into mass percent is laggard
Row dispensing.The raw material includes pure element simple substance and its intermediate alloy, and the purity of raw material is in general industry purity requirement
Can, total atomic percent of impurity is no more than 2% in alloy.
It is placed in after above-mentioned raw materials are mixed in quartz ampoule, is put into the induction coil in vaccum sensitive stove and carries out melting.First
10 will be evacuated in stove-3Below Pa, heated after being re-filled with 0.04MPa high-purity argon gas.Melting 6 times is repeated, obtains composition
Uniform foundry alloy, alloy surface is clean and metal luster.
Amorphous alloy ribbon is prepared using band method is got rid of：Alloy pig is placed in the foraminate quartz ampoule in bottom, hole diameter
About 1mm, quartz ampoule is placed in induction coil, quartz ampoule upper end connects with outside argon gas, and the pressure of external argon gas is than argon in stove
The high 0.03MPa of pressure of gas；After alloy melting, connecting valve is opened, outside argon gas is entered quartz ampoule, aluminium alloy is sprayed onto
The cooling roller surface of rotation, the rotating speed of chill roll is 30m/s, and aluminium alloy solidifies to form wide 2mm, thick 20 μm alloy thin band.It is right
Alloy thin band carries out XRD detections, only " steamed bun peak " occurs in the XRD spectrums measured, without sharp diffraction maximum, it was demonstrated that the strip is non-
Peritectic alloy.
The T of the non-crystaline amorphous metal is measured using DSCxTemperature.Amorphous thin ribbon is encapsulated in vitreosil pipe and annealed, temperature
540 DEG C of degree, it is incubated 240s.XRD detections are carried out to the strip after annealing and confirm that Crystallization Phases therein are α-Fe.Under transmission electron microscope
Observation, it is seen that after annealing in strip the size of α-Fe crystal grain in below 30nm.Magnetic is carried out to the strip after annealing by PPMS
It can detect, it is possible to find its saturation magnetization is more than 1.7T, than not stanniferous Fe70Nb9Sn1P12C3B5The saturation magnetic of non-crystaline amorphous metal
Change intensity and be higher by about 0.2T, while coercivity is maintained at below 3A/m.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
Corresponding change and deformation, and all these changes and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (8)
- A kind of 1. stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy, it is characterised in that：It is by Fe, Mo, Nb, Cr, Sn, P, C, the formula that B and Si is formed is FeaMobNbcCrdSnePfCgBhSiiAlloy, wherein a, b, c, d, e, f, g, h and i be respectively respective Corresponding atom percentage content, and 70≤a≤85,0≤b≤10,0≤c≤10,0≤d≤10,0 ＜ e≤5,0≤f≤ 20th, 0≤g≤20,0≤h≤20,0≤i≤20, and 75≤a+b+c+d+e≤90,10≤f+g+h+i≤25, a+b+c+d+e+f + g+h+i=100.
- 2. stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy according to claim 1, it is characterised in that：The iron-based The nascent Crystallization Phases of nanocrystalline and amorphous alloy are α-Fe.
- 3. a kind of preparation method of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy as claimed in claim 1, its feature exist In：Comprise the following steps：(1) according to formula ratio preparation raw material, then mixed；(2) raw material prepared is subjected to melt back in smelting furnace, until obtaining the uniform foundry alloy of composition；(3) by foundry alloy remelting, then by casting, quenching method or get rid of band method and carry out quick solidification block or thin ribbon shaped is made Non-crystaline amorphous metal；(4) non-crystaline amorphous metal is annealed, annealing temperature is higher than 10-50 DEG C of amorphous alloy crystallization start temperature, annealing time For 60-600s, stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy is obtained.
- 4. the preparation method of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy according to claim 3, its feature exist In：In step (2) in melting or step (3) during remelting, first vacuumize and be re-filled with inert gas and protected, i.e., first by smelting furnace Inside it is evacuated to 10-3Below Pa, inert gas is re-filled with to 0.02MPa is more than and carries out melting.
- 5. the preparation method of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy according to claim 3, its feature exist In：Casting is specifically in step (3), and foundry alloy is placed in electric arc furnaces or induction furnace and melted, and then sucks or sprays into and be cold But block is frozen into mould, obtains non-crystaline amorphous metal.
- 6. the preparation method of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy according to claim 3, its feature exist In：Quenching method is specifically that foundry alloy is sealed in vacuum tube in step (3), and vacuum tube and foundry alloy are heated to together After foundry alloy fusing, block is frozen into coolant of quenching, obtains non-crystaline amorphous metal.
- 7. the preparation method of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy according to claim 3, its feature exist In：It is specifically that foundry alloy is placed in the porose crucible in bottom, is sprayed onto foundry alloy liquid after fusing that band method is got rid of in step (3) At a high speed on the chill roll of rotation, quick solidification forms strip, obtains non-crystaline amorphous metal.
- 8. the preparation method of stanniferous soft magnetic iron-based nanocrystalline and amorphous alloy according to claim 3, its feature exist In：Annealing temperature is 400-700 DEG C in step (4).
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