CN108277406A - A kind of preparation method of the marmem with exchange bias effect - Google Patents
A kind of preparation method of the marmem with exchange bias effect Download PDFInfo
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- CN108277406A CN108277406A CN201810224004.6A CN201810224004A CN108277406A CN 108277406 A CN108277406 A CN 108277406A CN 201810224004 A CN201810224004 A CN 201810224004A CN 108277406 A CN108277406 A CN 108277406A
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- 230000000694 effects Effects 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910000943 NiAl Inorganic materials 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 40
- 239000000126 substance Substances 0.000 claims abstract description 27
- 238000010891 electric arc Methods 0.000 claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- 239000000956 alloy Substances 0.000 claims abstract description 22
- 238000002844 melting Methods 0.000 claims abstract description 20
- 230000008018 melting Effects 0.000 claims abstract description 20
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 239000004615 ingredient Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 26
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 18
- 229910052726 zirconium Inorganic materials 0.000 claims description 18
- 229910052786 argon Inorganic materials 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 229910052774 Proactinium Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000007499 fusion processing Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C22/00—Alloys based on manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The present invention is a kind of preparation method of the marmem with exchange bias effect.This approach includes the following steps：According to Mn2‑xCoxThe atomicity ratio of ingredient shown in NiAl is：Mn：Co：Ni：Al=(2 x)：x：1:1, each metal simple-substance, wherein x=0~0.3 are weighed respectively；It is put into electric arc furnaces, alloy cast ingot is obtained after electric arc melting 3~5 times；Polishing, cleaning, which are put into, gets rid of after band machine stove adds electric current that alloy cast ingot is made to melt, and after the sample that melting is sprayed using draught head in test tube and furnace chamber, obtains the marmem with exchange bias effect.The preparation process of the present invention is simple, at low cost and quick.The ribbon samples exchange bias effect prepared is bigger, and can reside in higher temperature (100K or so), meets the requirement of some potential applications in the fields such as magnetic storage, magnetic recording and Spin Valve.
Description
Technical field
The invention belongs to a kind of novel marmem Mn with exchange bias effect2-xCoxNiAl(0≤x≤
0.3) pure phase, is prepared using the method for melt_spun after arc melting metal simple-substance and there is the sample of exchange bias effect
Product belong to a kind of new material with exchange bias effect.
Background technology
In recent years, the marmem with exchange bias effect is since it is in giant magnetoresistance, ultra high density magnetic recording
Extensive interest is caused with the application potential on spin valve gear.People carried out the marmem of rich Ni bases before
More detailed research, preparing a series of richness Ni bases just has a sample of exchange bias effect, such as in document Structure,
magneto-structural transitions and magnetocaloric properties in Ni50-xMn37+ xIn13The alloy with exchange bias effect described in melt spun ribbons., exchange bias field only have 250Oe,
And exchange bias effect is not just observed near 50K.This exchange bias field is very faint and there are the lower materials of temperature
It is detrimental to practical application.
Invention content
The purpose of the present invention is for exchange biased mistake in the marmem with exchange bias effect having found
In faint, defect existing at low temperature is needed, a kind of preparation side of the marmem with exchange bias effect is provided
Method.This method has been prepared a kind of completely new by mixing the composition of alloy of Co elements under high Mn constituent contents or high Mn content
Still there is the marmem Mn of exchange bias effect with bigger exchange bias effect, and in 100K or so2- xCoxNiAl(0≤x≤0.3).The preparation process of the present invention is simple, at low cost and quick.The ribbon samples prepared exchange inclined
It is big to set Benefit Transfer, and can reside in higher temperature (100K or so), meets some in magnetic storage, magnetic recording and spin
The requirement of potential application in the fields such as valve.
The technical scheme is that：
A kind of preparation method of the marmem with exchange bias effect, includes the following steps：
The first step：According to Mn2-xCoxThe atomicity ratio of ingredient shown in NiAl is：Mn：Co：Ni：Al=(2-x)：x：1:1,
Each metal simple-substance, wherein x=0~0.3 are weighed respectively；In addition prepare one piece of metal zirconium ingot；
Second step：The metal simple-substance weighed and metal zirconium ingot are put into electric arc furnaces, then by the vacuum in electric arc furnaces
Degree is extracted into 1-2x10-3After Pa again applying argon gas to atmospheric pressure；
Third walks：The electric arc melting metal zirconium ingot for being 50A with size of current is 85A's with size of current after arc stability
The ready metal simple-substance of electric arc melting, by obtaining alloy cast ingot after melting 3~5 times；
4th step：It is cleaned by ultrasonic absolute ethyl alcohol is put into after the sand for surface paper polishing for the alloy cast ingot that upper step obtains；
5th step：The alloy cast ingot cleaned up, which is placed in bottom, to be had in the teat glass in hole of diameter 2mm, then by this
A teat glass, which is put into, gets rid of band machine furnace chamber, then will get rid of and is extracted into 1-2x10 with the vacuum degree in machine furnace chamber-3Applying argon gas is extremely again after Pa
0.05MPa, ar pressure is 0.08~0.10MPa in test tube；
6th step：It sets copper wheel rotating speed to 30~35m/s, after adding electric current that alloy cast ingot is made to melt, utilizes test tube and stove
After intracavitary draught head sprays the sample of melting, the marmem with exchange bias effect is obtained.
The present invention substantive distinguishing features be：
1. in composition, the alloy of richness Ni elements different from the past or doping Sb, the alloy of Sn elements, alloy herein
Ingredient be richness Mn contents, or richness Mn contents under incorporation Co elements marmem.
2. in terms of effect, belt like shape memorial alloy prepared herein all has an exchange bias effect, in embodiment 1
Alloy ribbon sample when x=0 can also have bigger 1000Oe exchange bias fields.Most importantly in embodiment 1
Ribbon samples can be near 100K it can also be observed that exchange bias effect, in the marmem of previously reported mistake
Exchange bias effect generally just disappears in 30K.Because tending to existing exchange at relatively high temperature when practical application
Bias effect, sample prepared herein improve the potential application temperature range of 70K or so, this is also shape prepared herein
The protrusion effect of shape memory alloys sample.
Beneficial effects of the present invention are：
Preparation process of the present invention is simple, at low cost, easy to operate；Obtain having pure single-phase, larger exchange bias effect,
And exchange bias effect can reside in the Mn of higher temperature (100K or so)2-xCoxNiAl (x=0,0.1,0.2,0.3) shape
The band-like sample of memorial alloy.
The Mn that the present invention obtains2-xCoxNiAl (x=0,0.1,0.2,0.3) marmem is simple for process, is prepared into
This is low；The ribbon samples prepared by melt_spun method have potential in fields such as magnetic storage, magnetic recording and Spin Valves
Application value.It is embodied in：
Description of the drawings
Fig. 1 is the XRD diagram of the obtained ribbon samples of embodiment 1-4；Wherein, Fig. 1 (a) is Mn in embodiment 12NiAl bands
The XRD diagram of shape sample；Fig. 1 (b) is Mn in embodiment 21.9Co0.1The XRD diagram of NiAl ribbon samples；Fig. 1 (c) is in embodiment 3
Mn1.8Co0.2The XRD diagram of NiAl ribbon samples；Fig. 1 (d) is Mn in embodiment 41.7Co0.3The XRD diagram of NiAl ribbon samples；
Fig. 2 is the M-H experiment curv figures of the obtained ribbon samples of embodiment 1-4；Wherein Fig. 2 (a) is in embodiment 1
Mn2The M-H curve graphs of NiAl ribbon samples；Fig. 2 (b) is Mn in embodiment 21.9Co0.1The M-H curve graphs of NiAl ribbon samples；
Fig. 2 (c) is Mn in embodiment 31.8Co0.2The M-H curve graphs of NiAl ribbon samples；Fig. 2 (d) is in embodiment 4
Mn1.7Co0.3The M-H curve graphs of NiAl ribbon samples；
Fig. 3 is 1 obtained ribbon samples Mn of embodiment2NiAl is at 5K, 10K, 40K, 80K, 100K, 200K and 300K
M-H curve graphs.
Fig. 4 is 1 obtained ribbon samples Mn of embodiment2NiAl is at 5K, 10K, 40K, 80K, 100K, 200K and 300K
Enlarged drawing of the M-H curves near downfield.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail：
Embodiment 1：Mn2The preparation process of NiAl ribbon samples
The first step：According to Mn2NiAl chemical formulas calculate required each element quality, and weighing purity with electronic balance is
99.99% metal simple-substance Mn：5.8356g(0.106mol)、Ni：2.9999g (0.053mol) and Al：1.3789g
(0.053mol)；In addition prepare one piece of not oxidized metal zirconium ingot；
Second step：Not oxidized metal zirconium ingot and the metal simple-substance weighed are put into electric arc furnaces.Utilize mechanical pump
And molecular pump, the vacuum degree in electric arc furnaces is extracted into 2x10-3Pa.Afterwards again applying argon gas to atmospheric pressure；
Third walks：The electric arc melting metal zirconium ingot for being 50A with size of current, it is ensured that alloy will not be by oxygen in fusion process
Change, after arc stability, the ready metal simple-substance of electric arc melting for being 85A with size of current.It is prepared into after melt back 4 times
Even ingot casting shape sample；
4th step：It will be put into absolute ethyl alcohol ultrasound 10 after the sand for surface paper polishing totally for the ingot casting shape sample that upper step obtains
Minute；
5th step：The ingot casting shape sample that above-mentioned steps obtain is placed in the teat glass that the holes diameter 2mm are arranged at bottom, then
This teat glass is put into and gets rid of band machine furnace chamber.Mechanical pump and molecular pump are successively utilized, is taken out getting rid of with the vacuum degree in machine furnace chamber
To 2x10-3Applying argon gas is to 0.05MPa again after Pa, and ar pressure is 0.08MPa in test tube；
6th step：Set copper wheel rotating speed to 34m/s, after adding electric current to keep ingot casting shape sample integrally fused, using test tube with
After draught head sprays the sample melted in furnace chamber, the band-like Mn that width is about 2mm is obtained2NiAl samples.
Embodiment 2：Mn1.9Co0.1The preparation process of NiAl ribbon samples
The first step：According to Mn1.9Co0.1NiAl chemical formulas calculate required each element quality, and it is equal to weigh purity with electronic balance
For 99.99% metal simple-substance Mn：3.9016g(0.071mol)、Ni：2.0952g(0.037mol)、Al：0.9628g
(0.037mol) and Co：0.2104g(0.004mol)；Prepare one piece of not oxidized metal zirconium ingot；
Second step：Not oxidized metal zirconium ingot and the metal simple-substance weighed are put into electric arc furnaces.Utilize mechanical pump
And molecular pump, the vacuum degree in electric arc furnaces is extracted into 2x10-3After Pa again applying argon gas to atmospheric pressure；
Third walks：The electric arc melting metal zirconium ingot for being 50A with size of current, it is ensured that alloy will not be by oxygen in fusion process
Change, after arc stability, the ready metal simple-substance of electric arc melting for being 85A with size of current.It is prepared into after melt back 4 times
Even ingot casting shape sample；
4th step：It will be put into absolute ethyl alcohol ultrasound 10 after the sand for surface paper polishing totally for the ingot casting shape sample that upper step obtains
Minute；
5th step：The ingot casting shape sample that above-mentioned steps obtain is placed in the teat glass that the holes diameter 2mm are arranged at bottom, then
This teat glass is put into and gets rid of band machine furnace chamber.Mechanical pump and molecular pump are successively utilized, is taken out getting rid of with the vacuum degree in machine furnace chamber
To 2x10-3Applying argon gas is to 0.05MPa again after Pa, and ar pressure is 0.08MPa in test tube；
6th step：Set copper wheel rotating speed to 34m/s, after adding electric current to keep ingot casting shape sample integrally fused, using test tube with
After draught head sprays the sample melted in furnace chamber, the band-like Mn that width is about 2mm is obtained1.9Co0.1NiAl samples.
Embodiment 3：Mn1.8Co0.2The preparation process of NiAl ribbon samples
The first step：According to Mn1.8Co0.2NiAl chemical formulas calculate required each metal simple-substance quality, are weighed with electronic balance pure
The metal simple-substance Mn that degree is 99.99%：3.6994g(0.067mol)、Ni：2.0957g(0.037mol)、Al：0.9627g
(0.037mol) and Co：0.4207g(0.007mol)；Prepare one piece of not oxidized metal zirconium ingot；
Second step：Not oxidized metal zirconium ingot and the metal simple-substance weighed are put into electric arc furnaces.Utilize mechanical pump
And molecular pump, the vacuum degree in electric arc furnaces is extracted into 2x10-3After Pa again applying argon gas to atmospheric pressure；
Third walks：The electric arc melting metal zirconium ingot for being 50A with size of current, it is ensured that alloy will not be by oxygen in fusion process
Change, after arc stability, the ready metal simple-substance of electric arc melting for being 85A with size of current.It is prepared into after melt back 4 times
Even ingot casting shape sample；
4th step：It will be put into absolute ethyl alcohol ultrasound 10 after the sand for surface paper polishing totally for the ingot casting shape sample that upper step obtains
Minute；
5th step：The ingot casting shape sample that above-mentioned steps obtain is placed in the teat glass that the holes diameter 2mm are arranged at bottom, then
This teat glass is put into and gets rid of band machine furnace chamber.Mechanical pump and molecular pump are successively utilized, is taken out getting rid of with the vacuum degree in machine furnace chamber
To 2x10-3Applying argon gas is to 0.05MPa again after Pa, and ar pressure is 0.08MPa in test tube；
6th step：Set copper wheel rotating speed to 34m/s, after adding electric current to keep ingot casting shape sample integrally fused, using test tube with
After draught head sprays the sample melted in furnace chamber, the band-like Mn that width is about 3mm is obtained1.8Co0.2NiAl samples.
Embodiment 4：Mn1.7Co0.3The preparation process of NiAl ribbon samples
The first step：According to Mn1.7Co0.3NiAl chemical formulas calculate required each metal simple-substance quality, are weighed with electronic balance pure
The metal simple-substance Mn that degree is 99.99%：3.5330g(0.064mol)、Ni：2.1140g(0.038mol)、Al：0.9714g
(0.038mol) and Co：0.6368g(0.011mol)；Prepare one piece of not oxidized metal zirconium ingot；
Second step：Not oxidized metal zirconium ingot and the metal simple-substance weighed are put into electric arc furnaces.Utilize mechanical pump
And molecular pump, the vacuum degree in electric arc furnaces is extracted into 2x10-3After Pa again applying argon gas to atmospheric pressure；
Third walks：The electric arc melting metal zirconium ingot for being 50A with size of current, it is ensured that alloy will not be by oxygen in fusion process
Change, after arc stability, the ready metal simple-substance of electric arc melting for being 85A with size of current.It is prepared into after melt back 4 times
Even ingot casting shape sample；
4th step：It will be put into absolute ethyl alcohol ultrasound 10 after the sand for surface paper polishing totally for the ingot casting shape sample that upper step obtains
Minute；
5th step：The ingot casting shape sample that above-mentioned steps obtain is placed in the teat glass that the holes diameter 2mm are arranged at bottom, then
This teat glass is put into and gets rid of band machine furnace chamber.Mechanical pump and molecular pump are successively utilized, is taken out getting rid of with the vacuum degree in machine furnace chamber
To 2x10-3Applying argon gas is to 0.05MPa again after Pa, and ar pressure is 0.08MPa in test tube；
6th step：Set copper wheel rotating speed to 34m/s, after adding electric current to keep ingot casting shape sample integrally fused, using test tube with
After draught head sprays the sample melted in furnace chamber, the band-like Mn that width is about 2mm is obtained1.7Co0.3NiAl samples.
(a) (b) (c) (d) in Fig. 1 is respectively the XRD diagram of obtained ribbon samples in embodiment 1,2,3,4.From figure
In as can be seen that each ribbon samples there are (220), (400) and (422) these three main diffraction maximums, these three diffraction maximums to be all
Belong to the characteristic peak of BBC phases.Further, it is also possible to observe (200) this superlattices peak in figure, but (111) are not observed
This superlattices peak, therefore the ribbon samples prepared are B2 structures.In diffraction pattern, seen not other than several main diffraction maximums
To other miscellaneous peaks, this explanation can prepare the sample with pure phase structure by the method for arc melting-melt_spun.
(a) (b) (c) (d) in Fig. 2 is respectively the M-H curve graphs of obtained ribbon samples in embodiment 1,2,3,4.
It can be seen from the figure that the hysteresis loop of each sample is in X-axis negative direction, there are one displacements, this illustrates to deposit in each sample
In exchange biased phenomenon.Mn wherein in embodiment 12The exchange bias field maximum that NiAl ribbon samples have can reach
1058Oe, this will be big than the exchange bias field that the marmem prepared in most of document before has.Embodiment
2, the Mn prepared in 3,42-xCoxThe sample of NiAl x=0.1,0.2,0.3 is also all respectively provided with the exchange bias field of different numerical value.
Fig. 3 is obtained Mn in embodiment 12NiAl ribbon samples are in 5K, 10K, 40K, 80K, 100K, 200K and 300K
M-H curve graphs.Fig. 4 is 1 obtained ribbon samples Mn of embodiment2NiAl in 5K, 10K, 40K, 80K, 100K, 200K and
Enlarged drawing of the M-H curves near low field under 300K.It can be seen from the figure that ribbon samples still have that there are one big in 100K
The small about exchange bias field of 200Oe, temperature existing for this exchange bias effect than previously reported will be high.
The Mn of 1 heterogeneity of table2-xCoxThe exchange biased Flow Field Numerical of NiAl (0≤x≤0.3) ribbon samples
| Ingredient | Exchange bias field (Oe) |
| Mn2NiAl | 1058 |
| Mn1.9Co0.1NiAl | 120 |
| Mn1.8Co0.2NiAl | 70 |
| Mn1.7Co0.3NiAl | 40 |
2 Mn of table2The exchange biased Flow Field Numerical of NiAl ribbon samples at different temperatures
| Temperature (K) | Exchange bias field (Oe) |
| 5 | 1060 |
| 10 | 769.5 |
| 40 | 503.5 |
| 80 | 306 |
| 100 | 209.5 |
The present invention designs a kind of preparation of the marmem with exchange bias effect, chemical formula Mn2- xCoxNiAl(0≤x≤0.3).The method of preparation includes arc melting and melt_spun, and it is 34m/s to get rid of speed.It prepares
Ribbon samples have the exchange bias field for being up to 1058Oe, and can also have the exchange of 200Oe sizes inclined near 100K
Field is set, remaining sample also all has exchange bias effect.
Unaccomplished matter of the present invention is known technology.
Claims (2)
1. a kind of preparation method of the marmem with exchange bias effect, it is characterized in that including the following steps：
The first step：According to Mn2-xCoxThe atomicity ratio of ingredient shown in NiAl is：Mn：Co：Ni：Al=（2-x）：x：1:1, claim respectively
Take each metal simple-substance, wherein x=0 ~ 0.3；In addition prepare one piece of metal zirconium ingot；
Second step：The metal simple-substance weighed and metal zirconium ingot are put into electric arc furnaces, then to after being vacuumized in electric arc furnaces again
Applying argon gas is to atmospheric pressure；
Third walks：The electric arc melting metal zirconium ingot for being 50A with size of current, after arc stability, the electricity for being 85A with size of current
The ready metal simple-substance of arc melting, by obtaining alloy cast ingot after melting 3 ~ 5 times；
4th step：It is cleaned by ultrasonic absolute ethyl alcohol is put into after the sand for surface paper polishing for the alloy cast ingot that upper step obtains；
5th step：Alloy cast ingot after cleaning, which is placed in bottom, to be had in the teat glass in hole of diameter 2mm, then by this glass
Glass test tube, which is put into, gets rid of band machine furnace chamber, then to get rid of vacuumized in band machine furnace chamber after applying argon gas is to 0.05 MPa again, argon gas in test tube
Air pressure is 0.08 ~ 0.10 MPa；
6th step：Copper wheel rotating speed is set to 30 ~ 35m/s, after adding electric current that alloy cast ingot is made to melt, using in test tube and furnace chamber
After draught head sprays the sample of melting, the marmem with exchange bias effect is obtained.
2. the preparation method of the marmem with exchange bias effect as described in claim 1, it is characterized in that second
Evacuated pressure in step and the 5th step is 1-2x10-3 Pa。
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| CN113684389A (en) * | 2021-08-16 | 2021-11-23 | 大连大学 | Method for improving superelasticity of Co-Ni-Al magnetic memory alloy by controlling gamma phase distribution |
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| CN101826385A (en) * | 2010-04-30 | 2010-09-08 | 中国科学院物理研究所 | Magnetic material with exchange bias effect and preparation method thereof |
| CN102732762A (en) * | 2012-07-20 | 2012-10-17 | 河北师范大学 | Magnetic shape memory alloy material with great exchange bias effect and preparation method thereof |
| CN102751063A (en) * | 2012-07-20 | 2012-10-24 | 河北师范大学 | Magnetic belt material with zero field cooling exchange bias effect and method for preparing magnetic belt material |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826385A (en) * | 2010-04-30 | 2010-09-08 | 中国科学院物理研究所 | Magnetic material with exchange bias effect and preparation method thereof |
| CN102732762A (en) * | 2012-07-20 | 2012-10-17 | 河北师范大学 | Magnetic shape memory alloy material with great exchange bias effect and preparation method thereof |
| CN102751063A (en) * | 2012-07-20 | 2012-10-24 | 河北师范大学 | Magnetic belt material with zero field cooling exchange bias effect and method for preparing magnetic belt material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113684389A (en) * | 2021-08-16 | 2021-11-23 | 大连大学 | Method for improving superelasticity of Co-Ni-Al magnetic memory alloy by controlling gamma phase distribution |
| CN113684389B (en) * | 2021-08-16 | 2022-07-29 | 大连大学 | Method for improving superelasticity of Co-Ni-Al magnetic memory alloy by controlling gamma phase distribution |
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