CN106498384A - The method that the iron-based magnetostrictive coating with orientation is prepared using cold spray technique - Google Patents
The method that the iron-based magnetostrictive coating with orientation is prepared using cold spray technique Download PDFInfo
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- CN106498384A CN106498384A CN201610857577.3A CN201610857577A CN106498384A CN 106498384 A CN106498384 A CN 106498384A CN 201610857577 A CN201610857577 A CN 201610857577A CN 106498384 A CN106498384 A CN 106498384A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- 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
- H01F41/14—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 applying magnetic films to substrates
- H01F41/16—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 applying magnetic films to substrates the magnetic material being applied in the form of particles, e.g. by serigraphy, to form thick magnetic films or precursors therefor
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Abstract
A kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation, belongs to magnetic functional material and its preparation field.Material composition is：Fe100‑x‑yGaxMy(x=13～30), Fe100‑x‑yAlxMy(x=10～27), Fe100‑x‑yCoxMy(x=45～75), Fe100‑x‑yNixMy(x=25～65), wherein M are one or more in B, Si, Ti, V, Cr, Mn, Zn, Ga, Nb, Ta and W, and y=0.01～0.6, above x, y are atomic fraction.First spherical gas-atomised powders being prepared with iron-based magnetostrictive material, then with metal material as substrate, spherical gas-atomised powders being ejected into bottom or two ends by way of cold spraying and is placed with the metallic substrates of magnet, the iron-based magnetostrictive coating with orientation is obtained.Coating prepared by this method can obtain the orientation coating along magnetic direction, and the coating with a certain orientation has high Magnetostriction, while technological process is simple, purposes prospect is extensive.
Description
Technical field
The invention belongs to field of magnetic material, prepared by more particularly to a kind of utilization cold spray technique has the iron-based magnetic being orientated
The method for causing flexible coating.
Background technology
, when magnetized state changes, the length or volume of its own can occur small for ferromagnetism and ferrimagnetic material
Change, this phenomenon are referred to as magnetostriction.The change of volume is referred to as volume magnetostriction, and the change of length is referred to as line mangneto and stretches
Contracting.As volume magnetostriction change is very little, practical value is not high, and usually said magnetostriction is primarily referred to as line mangneto and stretches
Contracting.(L is material original length to corresponding line magnetostriction coefficient λ=Δ L/L, and Δ L is the change of the length of material under externally-applied magnetic field
Amount).Work as λ>Under 0, i.e. externally-applied magnetic field, material is extended along magnetic direction, referred to as direct magnetostriction effect；Conversely, λ<0, then it is referred to as
Negative magnetostriction effect.Material under externally-applied magnetic field, produced maximum strain amount, referred to as saturation magnetostriction constant (λ
S), the size in corresponding magnetic field, referred to as saturated magnetization field (Hs).
Magnetostriction materials can realize the mutual conversion of electromagnetic energy and mechanical energy, with output power, energy density high,
The advantages of good reliability, be important energy and information transition material, is one of most important functional material of high-tech sector,
Underwater acoustic transducer, ultrasonic transducer, electroacoustic conversion, accurate brake, damping and noise control, intelligent machine, micrometric displacement control are contour
Technical field has wide practical use.
Based on the Magnetostrictive Properties of ferromagnetic material, piezoelectric ultrasonic transducer and electromagnet ultrasonic changer are in tested sample
Ultrasonic wave is inspired and receives, but with Magnetostrictive Properties conversely, when the size of ferromagnetic material changes, magnetic domain can be caused
Rotation or movement, and then magnetic effect can be produced in material internal, this phenomenon be referred to as counter magnetostriction effect, ferromagnetic material
Magnetostrictive effect and counter magnetostriction effect are the main causes for exciting and receiving ultrasonic wave in ferromagnetic sample.Magnetostriction is led
Ripple Non-Destructive Testing has the advantage of long range quick detection as a kind of new Dynamic Non-Destruction Measurement, is particularly suited for various
The In-service testing of oil, chemical industry and natural gas line and the anchoring of monitoring, high speed railway track Non-Destructive Testing, cable-stayed bridge and suspension bridge
The condition monitoring of the In-service testing in area, large scale structure and various buried components, with wide market prospects and using value.
Ferromagnetic material currently used for supersonic guide-wave Non-Destructive Testing is mainly magnetostriction strip, South West USA research institute
Doctor Kwun propose at first a kind of for pipeline circumferential crack detection propagated in pipeline vertically based on magnetostriction
The electromagnet ultrasonic changer of mechanism, on the basis of to the research of L mode electromagnetic ultrasonic guide wave, doctor Kwun has also been proposed a kind of use
In the EMAT structures for producing T mode ultrasound guided waves, EMAT devices are made up of coil, nickel strap and tested pipeline.The KimYY professors of Korea
And its seminar researcher attempts, by changing the occupation mode of nickel strap, to make EMAT that there is selecting frequency characteristic.But strip with tested
Fixation by epoxy resin between sample, at the same also serve as supersonic guide-wave magnetostriction strip and tested sample it
Between couplant, but epoxy resin can not resist heavier underground moisture, and anti-uv-ray is poor, and coating is easily dashed forward
, early stage can form bulge, and Long-Time Service will rupture, come off, it is impossible to long-term for outdoor, otherwise can accelerated ageing, such as change
Color, reduce intensity even efflorescence, come off, therefore alloy thin band can not be used for ultrasonic guided wave detecting and in-service monitoring, institute for a long time
To consider magnetostriction coating, the powder of magnetostriction materials is sprayed onto detected specimen surface by the way of cold spraying and is formed
Coating coating, anchoring strength of coating are high, fine and close, can be used for ultrasonic guided wave detecting for a long time, realize permanent military service.
This seminar of early stage had made, but coating mangneto is stretched
Contracting performance is not high, λ//It is close to 40ppm, it is contemplated that orientation is the key factor for determining the alloy material Magnetostrictions such as Fe-Ga,
We fix magnet such as Fig. 1 using in the bottom of metallic matrix or two ends, are obtained in all directions by way of cold spraying
Orientation coating.And in technical magnetization, the rotation of magnetic moment and non-180 ° of domain walls are rotated and cause alloy material to produce linear magnetostriction
Strain, the Magnetostriction along easy magnetization orientation are best.Therefore Fe-Ga, Fe-Al, Fe-Ni alloy/C<001>It is oriented to which easy
The direction of magnetization,<001>Oriented single crystal and polycrystalline have very high Magnetostriction.We measure Fe-Ga alloy coats<001>
The λ of orientation//80ppm is close to, as shown in Figure 2.
Therefore a kind of method of the iron-based magnetostrictive coating that utilization cold spray technique preparation has orientation is provided with weight
The realistic meaning that wants.
Content of the invention
It is an object of the invention to provide a kind of utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation
Method, for supersonic guide-wave Non-Destructive Testing, overcome magnetostriction strip Long-Time Service easy to fall off, oxidation and its other party method prepare
Coating is applied to the not high shortcoming of ultrasonic guided wave detecting performance, realizes permanent military service.
1. a kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation, it is characterised in that with
Based on metal material, iron-based magnetostrictive material aerosolization spherical powder is sprayed in the way of cold spraying, by the bottom of matrix
Portion or two ends are placed permanent magnet and provide orientation field, so as to obtain the orientation coating along magnetic direction；Concrete preparation process is as follows：
(1) spherical powder of iron-based magnetostrictive material is prepared with the mode of aerosolization；
(2) metallic substrates are surface-treated；
(3) magnet is fixed on metallic matrix；
(4) adopt cold spraying by aforesaid iron-based magnetostrictive powder spray in metal base surface, obtain and there is orientation
Magnetostriction coating.
The alloying component of orientation magnetostrictive powder, by atomic percentage, is expressed as mentioned above：Fe100-x-yGaxMy
(x=13～30), Fe100-x-yAlxMy(x=10～27), Fe100-x-yCoxMy(x=45～75), Fe100-x-yNixMy(x=25～
65), wherein M is one or more in B, Si, Ti, V, Cr, Mn, Zn, Ga, Nb, Ta and W, y=0.01～0.6；Balance of
Iron.
Step (1) the spherical gas-atomised powders are the anisotropy monocrystalline powder that particle diameter is 5～25um.
Step (2) metallic substrates are 316L stainless steels；The surface treatment method is sandblasting roughening treatment.
The magnetic field range of step (3) magnet is 0.1～2T.
Cold spraying condition described in step (4) is as follows：Working gas and powder feeding gas are nitrogen, and air pressure is
2.5MPa～4.0MPa, working gas temperature are 400 DEG C～800 DEG C, and spray distance is 60mm～120mm, and delivery rate is
50g/min～250g/min.
It is an advantage of the invention that：
1) using having anisotropic monocrystalline iron-based magnetostrictive material powder, it is obtained in that under magnetic field and has necessarily
Orientation coating；
2) there is the coating being necessarily orientated to add magnetic field, the direction that there is strong magnetostriction coefficient along a direction；
3) using cold spray technique prepares coating, can carry out under atmospheric environment, low to workpiece requirement, easy through engineering approaches should
With；
4) using cold spray technique prepares coating, production temperature is low, it is not easy to undergo phase transition, crystal grain is not easy to grow up, oxygen
Change phenomenon to be less likely to occur, prepares coating quality is good etc.；
5) iron-based magnetostrictive coating coating is used for supersonic guide-wave Non-Destructive Testing, overcomes magnetostriction strip Long-Time Service easy
The shortcoming for come off, aoxidizing, can achieve to be detected and used for a long time.
Description of the drawings
λ-H curves of the Fig. 1 for Fe-Ga magnetostriction coatings,
Folder wedge schematic devices of the Fig. 2 for the base metal block of cold spraying,
Single crystal grain sections of the Fig. 3 for the spherical gas-atomised powders of iron gallium.
Specific embodiment
Although having carried out detailed retouching with reference to following illustrative examples of the present invention to the specific embodiment of the present invention
State, but it should be noted that without departing from the present invention core in the case of, any simple deformation, modification or other
Those skilled in the art can not spend the equivalent of performing creative labour to each fall within protection scope of the present invention.
Embodiment 1：The method that the iron gallium magnetostriction coating with orientation is prepared using cold spray technique
1. Fe is prepared81Ga18.6B0.4(x=13～29) (above x is atomic percent), melts in the vacuum of alumina crucible
First time melting being carried out in furnace and preparing alloy cast ingot, machining removes ingot casting surface scale, pretreated ingot casting is put
Entering in high pressure gas atomization fuel pulverizing plant carries out secondary smelting, is heated to 1650 DEG C in a vacuum and is incubated 10 minutes, and atomization gas are adopted
With high-purity argon gas, atomizing pressure is 3.9MPa, and the pressure that dusts is 0.5mbar, is broken into through High-speed gas impacting aluminium alloy stream
Varigrained spherical gas-atomised powders；
2. sandblasting roughening treatment metallic matrix, then ultrasonic vibration is carried out respectively with acetone and alcohol, dry up, to clean surface
Impurity；
3. magnet is fixed on the two ends of metallic matrix, and the intensity of magnet is 1.5T；
4. spherical gas-atomised powders are the anisotropy monocrystalline high-pressure ball type gas-atomised powders that particle diameter is 5～25um.
5. adopt cold spraying by aforesaid iron-based magnetostrictive powder spray in metal base surface, working gas and powder feeding
Gas is nitrogen, and air pressure is 2.5MPa～4.0MPa, and working gas temperature is 600 DEG C, and spray distance is 80mm,
Delivery rate is 60g/min, obtains the iron gallium magnetostriction coating with orientation, and λ-H curves are as shown in Figure 2.
Embodiment 2：The method that the iron aluminium magnetostriction coating with orientation is prepared using cold spray technique
1. Fe is prepared80Al19.4Si0.6(x=10-25) (above x is atomic percent), melts in the vacuum of alumina crucible
First time melting being carried out in furnace and preparing alloy cast ingot, machining removes ingot casting surface scale, pretreated ingot casting is put
Entering in high pressure gas atomization fuel pulverizing plant carries out secondary smelting, is heated to 1680 DEG C in a vacuum and is incubated 10 minutes, and atomization gas are adopted
With high-purity argon gas, atomizing pressure is 3.7Mpa, and the pressure that dusts is 0.23mbar, is broken into through High-speed gas impacting aluminium alloy stream
Varigrained spherical gas-atomised powders；
2. sandblasting roughening treatment metallic matrix, then ultrasonic vibration is carried out respectively with acetone and alcohol, dry up, to clean surface
Impurity；
3. magnet is fixed on the two ends of metallic matrix, and the intensity of magnet is 1.5T；
4. spherical gas-atomised powders are the anisotropy monocrystalline high-pressure ball type gas-atomised powders that particle diameter is 5～25um.
5. adopt cold spraying by aforesaid iron-based magnetostrictive powder spray in metal base surface, working gas and powder feeding
Gas is nitrogen, and air pressure is 2.5MPa～4.0MPa, and working gas temperature is 600 DEG C, and spray distance is 80mm,
Delivery rate is 60g/min, obtains the iron aluminium magnetostriction coating with orientation.
Claims (7)
1. a kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation, it is characterised in that with metal
Based on material, spray iron-based magnetostrictive material aerosolization spherical powder in the way of cold spraying, by the bottom of matrix or
Two ends are placed permanent magnet and provide orientation field, so as to obtain the orientation coating along magnetic direction；Concrete preparation process is as follows：
(1) spherical powder of iron-based magnetostrictive material is prepared with the mode of aerosolization；
(2) metallic substrates are surface-treated；
(3) magnet is fixed on metallic matrix；
(4) adopt cold spraying by aforesaid iron-based magnetostrictive powder spray in metal base surface, obtain the magnetic with orientation
Cause flexible coating.
2. a kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation as claimed in claim 1,
It is characterized in that：The alloying component of the orientation magnetostrictive powder, by atomic percentage, is expressed as：Fe100-x-yGaxMy(x
=13～30), Fe100-x-yAlxMy(x=10～27), Fe100-x-yCoxMy(x=45～75), Fe100-x-yNixMy(x=25～
65), wherein M is one or more in B, Si, Ti, V, Cr, Mn, Zn, Ga, Nb, Ta and W, y=0.01～0.6；Balance of
Iron.
3. a kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation as claimed in claim 1,
It is characterized in that：The metallic substrates are 316L stainless steels.
4. a kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation as claimed in claim 1,
It is characterized in that：The surface treatment method is sandblasting roughening treatment.
5. a kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation as claimed in claim 1,
It is characterized in that：The spherical gas-atomised powders are the anisotropy monocrystalline powder that particle diameter is 5～25 μm.
6. a kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation as claimed in claim 1,
It is characterized in that：The magnetic field range of the magnet is 0.1～2T.
7. a kind of method that utilization cold spray technique prepares the iron-based magnetostrictive coating with orientation as claimed in claim 1,
It is characterized in that：Described cold spraying condition is as follows：Working gas and powder feeding gas are nitrogen, and air pressure is
2.5MPa～4.0MPa, working gas temperature are 400 DEG C～800 DEG C, and spray distance is 60mm～120mm, and delivery rate is
50g/min～250g/min.
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Cited By (6)
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| CN108728844A (en) * | 2018-07-25 | 2018-11-02 | 中国兵器科学研究院宁波分院 | A kind of cold spraying preparation method of medical bio coating |
| CN109556323A (en) * | 2017-09-25 | 2019-04-02 | 佛山市顺德区美的电热电器制造有限公司 | Heat exchanger and preparation method thereof, heat-exchanging component and air-conditioning and its clean method |
| CN113566688A (en) * | 2021-07-14 | 2021-10-29 | 国家石油天然气管网集团有限公司华南分公司 | Magnetostrictive waveguide wire capable of improving energy conversion efficiency and preparation method thereof |
| CN114002627A (en) * | 2021-10-29 | 2022-02-01 | 深圳技术大学 | Microcosmic in-situ measurement system for magnetostrictive material in high-intensity magnetic field |
| CN114231968A (en) * | 2021-12-13 | 2022-03-25 | 广东省科学院新材料研究所 | Preparation method of iron-nickel composite coating and iron-nickel composite coating material |
| CN114791463A (en) * | 2022-04-28 | 2022-07-26 | 哈尔滨工业大学 | Method for improving electromagnetic ultrasonic detection performance based on ferroferric oxide coating |
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| CN109556323A (en) * | 2017-09-25 | 2019-04-02 | 佛山市顺德区美的电热电器制造有限公司 | Heat exchanger and preparation method thereof, heat-exchanging component and air-conditioning and its clean method |
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| CN113566688B (en) * | 2021-07-14 | 2023-03-14 | 国家石油天然气管网集团有限公司华南分公司 | Magnetostrictive waveguide wire capable of improving energy conversion efficiency and preparation method thereof |
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| CN114791463A (en) * | 2022-04-28 | 2022-07-26 | 哈尔滨工业大学 | Method for improving electromagnetic ultrasonic detection performance based on ferroferric oxide coating |
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