CN109023145A - A kind of the Curie temperature regulation method and preparation method of LaFeSi base magnetic refrigerating material - Google Patents
A kind of the Curie temperature regulation method and preparation method of LaFeSi base magnetic refrigerating material Download PDFInfo
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- CN109023145A CN109023145A CN201810896886.0A CN201810896886A CN109023145A CN 109023145 A CN109023145 A CN 109023145A CN 201810896886 A CN201810896886 A CN 201810896886A CN 109023145 A CN109023145 A CN 109023145A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/007—Heat treatment of ferrous alloys containing Co
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/012—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials adapted for magnetic entropy change by magnetocaloric effect, e.g. used as magnetic refrigerating material
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Abstract
The invention belongs to technical field of magnetic materials.The invention discloses a kind of Curie temperature of LaFeSi base magnetic refrigerating material to regulate and control method, is La for nominal composition1‑xRx(Fe13‑a‑b‑c‑ dMnaCrbCoc)Sid, wherein R is rare earth element, and a, b, c, d, x are that corresponding element chemistry measures ratio, wherein 0≤x≤0.5,0≤a≤0.5,0≤b≤0.3,0≤c≤2,1≤d≤2；It is T that element chemistry metering, which can be obtained, than the Curie temperature relational expression of expressionc=k0‑k1·a‑k2·b+k3·c+k4·d‑k5X, wherein 200≤k0≤ 240,120≤k1≤ 180,40≤k2≤ 80,80≤k3≤ 120,40≤k4≤ 80,50≤k5≤90；The invention also discloses a kind of preparation methods of LaFeSi base magnetic refrigerating material.The present invention can accurately control the Curie temperature of LaFeSi base magnetic refrigerating material, make the material Curie temperature prepared in desired extent, to can accomplish the accurate control of magnetic refrigerating material Curie temperature during producing and being generalized to market.
Description
Technical field
The present invention relates to technical field of magnetic materials, more particularly, to a kind of Curie temperature of LaFeSi base magnetic refrigerating material
Regulation method and preparation method.
Background technique
With increasingly warming for the whole world, the demand of air-conditioning and refrigerator is also sharply increased.At present using needed for air-conditioning and electric fan
Electricity has accounted for the 10% of global electricity consumption, and with the raising of more developing country's income levels, the demand of air-conditioning
It will accelerated growth.Huge cost and environment will be brought to influence to the whole society for the power supply of these air-conditionings, set up higher system
Cold efficiency standard will be one of measure that government may take, it is possible to reduce the demand to society's electricity consumption, reduce disposal of pollutants and
Reduce cost.
However refrigerating efficiency is improved, it is inadequate for only improving up from the compressor that more than 100 years have been developed at present
's.Although current compressor efficiency has promotion by a relatively large margin, but still not enough, and want it is further promoted nor
It is often difficult.Urgent need seeks more efficiently to substitute Refrigeration Technique.
And magnetic Refrigeration Technique is exactly one of most promising substitute technology.Compared with traditional compressor refrigeration, magnetic refrigeration
Heat release and heat absorption during technology magnetizes demagnetization using magnetic refrigerating working material in magnetic field, to achieve the purpose that refrigeration.
Since using solid coolant working medium, the gas of exhaust emission environment, will not more not cause greenhouse effects, and rotational parts
It is few, low noise, it is often more important that magnetic refrigerating theory efficiency can achieve 60% or more of inverse Carnot cycle, more than traditional compressor
Efficiently.
The development of magnetic Refrigeration Technique has had nearly 30 years time, as one of magnetic Refrigeration Technique core and key
Magnetic refrigerating material decides the performance of magnetic Refrigeration Technique.Although based on still being researched and developed at present with laboratory, many companies are also being caused
Power is introduced to the market in the volume production of magnetic refrigerating material and refrigerator, the refrigerator etc. of application magnetic Refrigeration Technique.Magnetic refrigerating material only exists
Its near Curie temperature shows big magnetothermal effect, thus refrigerating capacity with higher.So during application, just
Make its working range near Curie temperature, so that competence exertion goes out the potential of material.However traditional magnetic refrigerating material is ground
Hair only pursues high maximum magnetic entropy variable simply, ignores the importance of Curie temperature, do not pay attention to the accurate control of Curie temperature
System, and Curie temperature inhomogeneities is obvious in the R&D process of material, it is difficult to accurate control.
China Patent Publication No. CN 106967923 A discloses a kind of method using bonding and prepares magnetic refrigerating material,
However material Curie temperature of its preparation, near 340K, and the working ranges such as refrigerator, air-conditioning are in 260K~310K, Wu Fafa
Shoot the optimum performance of material.105957672 A of China Patent Publication No. CN discloses a kind of lanthanum iron silicon substrate hydride magnetic working medium
And preparation method thereof, lanthanum iron silicon substrate its chemical formula of hydride magnetic working medium be La1-aRa(Fe1-b-cMbSic)13Hd, prepared residence
In magnetic refrigerating working material of the temperature in 250~310K, however the method for not providing specific regulation Curie temperature.
Summary of the invention
To solve the above problems, simply directly and more accurately controlling and determining LaFeSi base the present invention provides a kind of
The method of magnetic refrigerating material Curie temperature；
The present invention has also correspondingly provided a kind of preparation method of LaFeSi base magnetic refrigerating material.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of Curie temperature regulation method of LaFeSi base magnetic refrigerating material, is La for nominal composition1-xRx(Fe13-a-b-c- dMnaCrbCoc)Sid, wherein R is rare earth element, and a, b, c, d, x are that corresponding element chemistry measures ratio, wherein and 0≤x≤0.5,0
≤ a≤0.5,0≤b≤0.3,0≤c≤2,1≤d≤2；It is T that element chemistry metering, which can be obtained, than the Curie temperature relational expression of expressionc
=k0-k1·a-k2·b+k3·c+k4·d-k5X, wherein 200≤k0≤ 240,120≤k1≤ 180,40≤k2≤ 80,80
≤k3≤ 120,40≤k4≤ 80,50≤k5≤90。
The specific method for controlling LaFeSi base magnetic refrigerating material Curie temperature is to control a, b, c, d during ingredient,
The range and relationship of x, and the relationship between Curie temperature Tc and each amount, and error are obtained by theoretical calculation and summary of experience
It is smaller.
Preferably, when carrying out parameter adjustment for a, b, c, d, x, if its variable quantity △ a, △ b, △ c, △ d, △ x
Satisfaction-the k between its coefficient1·△a-k2·△b+k3·△c+k4·△d-k5△ x=0, then corresponding Curie temperature Tc
It remains unchanged.
When adjusting the amount of a, b, c, d, x, if between its variable quantity △ a, △ b, △ c, △ d, △ x and its coefficient
Satisfaction-k1 △ a-k2 △ b+k3 △ c+k4 △ d-k5 △ x=0 then can keep LaFeSi base magnetic refrigeration material after formula adjustment
The Curie temperature of material is basically unchanged, and saturation is flushed with hydrogen brought Curie temperature variation and is already contained in relational expression.
Preferably, being obtained through corresponding conversion by mass fraction by element chemistry metering than the Curie temperature relational expression of expression
The Curie temperature relational expression of expression.
Although the Curie temperature relational expression in the present invention is expressed by the stoichiometric ratio mode of element, by corresponding
Conversion can obtain the Curie temperature relational expression expressed by mass fraction mode.
Preferably, range of the corresponding element chemistry metering than a, b, c, d, x is 0.1≤x≤0.3,0.1≤a≤
0.3,0.01≤b≤0.1,0.01≤c≤0.5,1.3≤d≤1.6.
Preferably, parameter k0、k1、k2、k3、k4、k5Range be 220≤k0≤ 230,140≤k1≤ 150,50≤k2≤
60,100≤k3≤ 110,50≤k4≤ 70,60≤k5≤80。
A kind of preparation method of LaFeSi base magnetic refrigerating material, comprising the following steps:
A) obtained La is calculated by above-mentioned Curie temperature relational expression1-xRx(Fe13-a-b-c-dMnaCrbCoc)SidSpecific ingredient, and
It measures by its element chemistry than carrying out ingredient；
B) raw material prepared in step a) is added in vacuum induction rapid hardening furnace and carries out high melt, copper roller is cast to after melting
On, obtain rapid casting；
C) rapid casting is put into vacuum tube furnace and is heat-treated, then air-cooled processing；
D) the LaFeSi base magnetic of step c) treated strip carries out saturation is flushed with hydrogen Curie temperature needed for processing is made is freezed material
Material.
Not using the form of ice water or Quenching in liquid nitrogen after heat treatment, but directly calandria is released, is stopped
Heating carries out vacuum tube air-cooled.
Preferably, in step a), when ingredient the burn out rate of added rare earth be no more than 20wt%, ingredient total weight
For no more than 600kg.
Preferably, in step a), when ingredient the burn out rate of added rare earth be 5~15wt%, ingredient total weight is 1
~100kg.
Preferably, in step c), heat treatment temperature is 1000~1200 DEG C, heat treatment time be no more than 20 hours,
Heat treatment is 1 × 10-4~1 × 10-2It is carried out under Pa vacuum.
Preferably, in step c), heat treatment temperature is 1050~1150 DEG C, heat treatment time be no more than 12 hours,
Heat treatment is 1 × 10-4~1 × 10-2It is carried out under Pa vacuum.
Therefore, the invention has the following advantages: the present invention can accurately control the Curie of LaFeSi base magnetic refrigerating material
Temperature makes the material Curie temperature prepared in desired extent, to can do during producing and being generalized to market
To the accurate control of magnetic refrigerating material Curie temperature.
Detailed description of the invention
Fig. 1 is 1 Curie temperature test result of embodiment；
Fig. 2 is 2 Curie temperature test result of embodiment.
Specific embodiment
Further description of the technical solution of the present invention With reference to embodiment.
Obviously, the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, all other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
In the present invention, if not refering in particular to, all equipment and raw material is commercially available or the industry is common,
Method in following embodiments is unless otherwise instructed conventional method in that art.
It is fitted by taking the relational expression of Tc=225-145a-55b+105c+60d-70x as an example in the embodiment of the present invention.
Embodiment 1
In the name of ingredient matches to obtain La in the present embodiment0.7Ce0.3Fe11.28Mn0.22Si1.5Alloy considers that rare earth scaling loss is 14%.
By melting is carried out in vacuum induction rapid hardening furnace after gross mass 18kg ingredient, melt completely in fusion process to raw material
After change, 10min is refined, melt liquid temperature is cast on high-speed rotating copper roller at 1500 DEG C or more, obtains rapid casting, will
The rapid casting of acquisition carries out high-temperature heat treatment in electron tubes type sintering furnace, is evacuated to 1 × 10 before the heat treatment-2Pa with
Under, it starts to warm up and after 1100 DEG C of heat preservation 2.5h, stops heating, air-cooled measure is used to high-temperature furnace body, allows to cool to room
Temperature；Strip after heat treatment is flushed with hydrogen, the powder after being flushed with hydrogen tests its Curie temperature, test result such as Fig. 1 with SQUID
It is shown；Measuring its Curie temperature is 282K, and fitting result is 283.1K.
Embodiment 2
In the name of ingredient matches to obtain La in the present embodiment0.7Ce0.3Fe11.15Mn0.20Cr0.05Co0.2Si1.4Alloy considers that rare earth is burnt
Damage is 7%.
By melting is carried out in vacuum induction rapid hardening furnace after gross mass 16kg ingredient, melt completely in fusion process to raw material
After change, 10min is refined, melt liquid temperature is cast on high-speed rotating copper roller at 1500 DEG C or more, obtains rapid casting, will
The rapid casting of acquisition carries out high-temperature heat treatment in electron tubes type sintering furnace, is evacuated to 1 × 10 before the heat treatment-2Pa with
Under, it starts to warm up and after 1100 DEG C of heat preservation 5h, stops heating, air-cooled measure is used to high-temperature furnace body, allows to cool to room temperature；
Strip after heat treatment is flushed with hydrogen, the powder after being flushed with hydrogen tests its Curie temperature, test result such as Fig. 2 institute with SQUID
Show；Measuring its Curie temperature is 294K, and fitting result is 298.25K.
Embodiment 3
In the name of ingredient matches to obtain La in the present embodiment0.7Ce0.3Fe11.2Mn0.20Cr0.05Co0.1Si1.45Alloy considers that rare earth is burnt
Damage is 7%.
By melting is carried out in vacuum induction rapid hardening furnace after gross mass 12kg ingredient, melt completely in fusion process to raw material
After change, 10min is refined, melt liquid temperature is cast on high-speed rotating copper roller at 1500 DEG C or more, obtains rapid casting, will
The rapid casting of acquisition carries out high-temperature heat treatment in electron tubes type sintering furnace, is evacuated to 1 × 10 before the heat treatment-2Pa with
Under, it starts to warm up and after 1100 DEG C of heat preservation 6h, stops heating, air-cooled measure is used to high-temperature furnace body, allows to cool to room temperature；
Strip after heat treatment is flushed with hydrogen, the powder after being flushed with hydrogen tests its Curie temperature with SQUID；Measuring its Curie temperature is
287K, and fitting result is 290.75K.
Embodiment 4
In the name of ingredient matches to obtain La in the present embodiment0.7Ce0.3Fe11.2Mn0.20Cr0.05Co0.15Si1.4Alloy considers that rare earth is burnt
Damage is 7%.
By melting is carried out in vacuum induction rapid hardening furnace after gross mass 12kg ingredient, melt completely in fusion process to raw material
After change, 10min is refined, melt liquid temperature is cast on high-speed rotating copper roller at 1500 DEG C or more, obtains rapid casting, will
The rapid casting of acquisition carries out high-temperature heat treatment in electron tubes type sintering furnace, is evacuated to 1 × 10 before the heat treatment-2Pa with
Under, it starts to warm up and after 1100 DEG C of heat preservation 6h, stops heating, air-cooled measure is used to high-temperature furnace body, allows to cool to room temperature；
Strip after heat treatment is flushed with hydrogen, the powder after being flushed with hydrogen tests its Curie temperature with SQUID；Measuring its Curie temperature is
293K, and fitting result is 293K.
Embodiment 5
In the name of ingredient matches to obtain La in the present embodiment0.7Ce0.3Fe11.2Mn0.20Cr0.05Co0.12Si1.45Alloy considers that rare earth is burnt
Damage is 7%.
By melting is carried out in vacuum induction rapid hardening furnace after gross mass 12kg ingredient, melt completely in fusion process to raw material
After change, 10min is refined, melt liquid temperature is cast on high-speed rotating copper roller at 1500 DEG C or more, obtains rapid casting, will
The rapid casting of acquisition carries out high-temperature heat treatment in electron tubes type sintering furnace, is evacuated to 1 × 10 before the heat treatment-2Pa with
Under, it starts to warm up and after 1120 DEG C of heat preservation 6h, stops heating, air-cooled measure is used to high-temperature furnace body, allows to cool to room temperature；
Strip after heat treatment is flushed with hydrogen, the powder after being flushed with hydrogen tests its Curie temperature with SQUID；Measuring its Curie temperature is
291K, and fitting result is 292.85K.
Embodiment 6
In the name of ingredient matches to obtain La in the present embodiment0.7Ce0.3Fe11.2Mn0.21Cr0.03Co0.05Si1.45Alloy considers that rare earth is burnt
Damage is 7%.
By melting is carried out in vacuum induction rapid hardening furnace after gross mass 12kg ingredient, melt completely in fusion process to raw material
After change, refining 10min or so, melt liquid temperature is cast on high-speed rotating copper roller at 1500 DEG C or more, and it is thin to obtain rapid hardening
The rapid casting of acquisition is carried out high-temperature heat treatment by band in electron tubes type sintering furnace, it is evacuated to 1 before the heat treatment ×
10-2Pa stops heating hereinafter, starting to warm up and after 1110 DEG C of heat preservation 5h, uses air-cooled measure to high-temperature furnace body, is allowed to cool
To room temperature；Strip after heat treatment is flushed with hydrogen, the powder after being flushed with hydrogen tests its Curie temperature with SQUID.Measure its residence
In temperature be 285K, and fitting result be 285.15K.
Following table 1 lists the summary sheet of each embodiment Curie temperature and fitting fitting Curie temperature comparison.
Each embodiment of table 1 surveys Curie temperature and fitting Curie temperature Comparative result table
| Embodiment number | Survey Curie temperature | It is fitted Curie temperature |
| Embodiment 1 | 282K | 283.10K |
| Embodiment 2 | 294K | 298.25K |
| Embodiment 3 | 287K | 290.75K |
| Embodiment 4 | 293K | 293.00K |
| Embodiment 5 | 291K | 292.85K |
| Embodiment 6 | 285K | 285.15K |
It should be understood that those skilled in the art, it can be modified or changed according to the above description, and
All these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of Curie temperature of LaFeSi base magnetic refrigerating material regulates and controls method, it is characterised in that:
It is La for nominal composition1-xRx(Fe13-a-b-c-dMnaCrbCoc)Sid, wherein R is rare earth element, and a, b, c, d, x are opposite
Element chemistry is answered to measure ratio,
Wherein, 0≤x≤0.5,0≤a≤0.5,0≤b≤0.3,0≤c≤2,1≤d≤2；
It is T that element chemistry metering, which can be obtained, than the Curie temperature relational expression of expressionc =k0-k1·a-k2·b+k3·c+k4·d-k5·x
,
Wherein, 200≤k0≤ 240,120≤k1≤ 180,40≤k2≤ 80,80≤k3≤ 120,40≤k4≤ 80,50≤k5≤
90。
2. a kind of Curie temperature of LaFeSi base magnetic refrigerating material according to claim 1 regulates and controls method, it is characterised in that:
When carrying out parameter adjustment for a, b, c, d, x, if full between its variable quantity △ a, △ b, △ c, △ d, △ x and its coefficient
Foot-k1·△a-k2·△b+k3·△c+k4·△d-k5X=0 △, then corresponding Curie temperature TcIt remains unchanged.
3. a kind of Curie temperature of LaFeSi base magnetic refrigerating material according to claim 1 regulates and controls method, it is characterised in that:
It is described to obtain the residence expressed by mass fraction through corresponding conversion than the Curie temperature relational expression of expression by element chemistry metering
In temperature dependence.
4. a kind of Curie temperature of LaFeSi base magnetic refrigerating material according to claim 1 regulates and controls method, it is characterised in that:
The corresponding range of the element chemistry metering than a, b, c, d, x is 0.1≤x≤0.3,0.1≤a≤0.3,0.01≤b
≤ 0.1,0.01≤c≤0.5,1.3≤d≤1.6.
5. a kind of Curie temperature of LaFeSi base magnetic refrigerating material according to claim 1 regulates and controls method, it is characterised in that:
The parameter k0、k1、k2、k3、k4、k5Range be 220≤k0≤ 230,140≤k1≤ 150,50≤k2≤ 60,100≤k3
≤ 110,50≤k4≤ 70,60≤k5≤80。
6. the preparation method of LaFeSi base magnetic refrigerating material described in one kind according to claim 1 or 2 or 3 or 4 or 5, feature
Be the following steps are included:
A) obtained La is calculated by above-mentioned Curie temperature relational expression1-xRx(Fe13-a-b-c-dMnaCrbCoc)SidSpecific ingredient, and
It measures by its element chemistry than carrying out ingredient；
B) raw material prepared in step a) is added in vacuum induction rapid hardening furnace and carries out high melt, copper roller is cast to after melting
On, obtain rapid casting；
C) rapid casting is put into vacuum tube furnace and is heat-treated, then air-cooled processing；
D) the LaFeSi base magnetic of step c) treated strip carries out saturation is flushed with hydrogen Curie temperature needed for processing is made is freezed material
Material.
7. a kind of preparation method of LaFeSi base magnetic refrigerating material according to claim 6, it is characterised in that:
In the step a), when ingredient added rare earth burn out rate be no more than 20wt%, ingredient total weight be no more than
600kg。
8. a kind of preparation method of LaFeSi base magnetic refrigerating material according to claim 7, it is characterised in that:
In the step a), when ingredient the burn out rate of added rare earth be 5~15wt%, ingredient total weight is 1~100kg.
9. a kind of preparation method of LaFeSi base magnetic refrigerating material according to claim 7, it is characterised in that:
In the step c), heat treatment temperature is 1000~1200 DEG C, and heat treatment time is to be heat-treated no more than 20 hours 1
×10-4~1 × 10-2It is carried out under Pa vacuum.
10. a kind of preparation method of LaFeSi base magnetic refrigerating material according to claim 7, it is characterised in that:
In the step c), heat treatment temperature is 1050~1150 DEG C, and heat treatment time is to be heat-treated no more than 12 hours 1
×10-4~1 × 10-2It is carried out under Pa vacuum.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567240A (en) * | 2007-09-13 | 2009-10-28 | 株式会社东芝 | Alloy material, a magnetic material, a manufacturing method of a magnetic material, and a magnetic material manufactured by the manufacturing method |
| CN102516950A (en) * | 2010-08-18 | 2012-06-27 | 真空融化股份有限公司 | Working component for magnetic heat exchange and method of producing a working component for magnetic refrigeration |
| CN106086738A (en) * | 2016-05-31 | 2016-11-09 | 北京科技大学 | Regulation NaZn13structure Rare-earth Iron silicon alloy Curie temperature and the method reducing dephasign |
| CN106270425A (en) * | 2016-08-10 | 2017-01-04 | 横店集团东磁股份有限公司 | A kind of magnetic refrigerating material mass production preparation method |
| CN106480356A (en) * | 2016-10-17 | 2017-03-08 | 佛山市程显科技有限公司 | A kind of lanthanum ferrum silica-base material for thermomagnetic generation and its production and use |
| CN108242302A (en) * | 2018-01-05 | 2018-07-03 | 华南理工大学 | A kind of LaFeSi bases magnetic refrigeration composite block material based on grain boundary decision technology and preparation method thereof |
-
2018
- 2018-08-08 CN CN201810896886.0A patent/CN109023145A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567240A (en) * | 2007-09-13 | 2009-10-28 | 株式会社东芝 | Alloy material, a magnetic material, a manufacturing method of a magnetic material, and a magnetic material manufactured by the manufacturing method |
| CN102516950A (en) * | 2010-08-18 | 2012-06-27 | 真空融化股份有限公司 | Working component for magnetic heat exchange and method of producing a working component for magnetic refrigeration |
| CN106086738A (en) * | 2016-05-31 | 2016-11-09 | 北京科技大学 | Regulation NaZn13structure Rare-earth Iron silicon alloy Curie temperature and the method reducing dephasign |
| CN106270425A (en) * | 2016-08-10 | 2017-01-04 | 横店集团东磁股份有限公司 | A kind of magnetic refrigerating material mass production preparation method |
| CN106480356A (en) * | 2016-10-17 | 2017-03-08 | 佛山市程显科技有限公司 | A kind of lanthanum ferrum silica-base material for thermomagnetic generation and its production and use |
| CN108242302A (en) * | 2018-01-05 | 2018-07-03 | 华南理工大学 | A kind of LaFeSi bases magnetic refrigeration composite block material based on grain boundary decision technology and preparation method thereof |
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