CN1818121A - Method for producing magnetostrictive element - Google Patents

Method for producing magnetostrictive element Download PDF

Info

Publication number
CN1818121A
CN1818121A CNA2006100068071A CN200610006807A CN1818121A CN 1818121 A CN1818121 A CN 1818121A CN A2006100068071 A CNA2006100068071 A CN A2006100068071A CN 200610006807 A CN200610006807 A CN 200610006807A CN 1818121 A CN1818121 A CN 1818121A
Authority
CN
China
Prior art keywords
alloy
manufacture method
raw material
magnetostriction element
powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2006100068071A
Other languages
Chinese (zh)
Inventor
森辉夫
富泽史郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TDK Corp filed Critical TDK Corp
Publication of CN1818121A publication Critical patent/CN1818121A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01F41/02—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
    • H01F41/0253—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 for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy
    • 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
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/047—Making non-ferrous alloys by powder metallurgy comprising intermetallic compounds
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N35/00—Magnetostrictive devices
    • H10N35/80—Constructional details
    • H10N35/85—Magnetostrictive active materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—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 hard-magnetic materials
    • H01F1/04—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 hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

The present invention provides a method for producing a magnetostrictive element which can give an anisotropic magnetostrictive element from a starting material containing Sm and a transition metal element. The method produces an anisotropic magnetostrictive element by compacting the starting powder in a magnetic field to produce a compact, and sintering the compact to produce a sintered body having a composition of SmFe2. It is preferable that the starting powder is produced by mixing a first alloy for the main phase of the magnetostrictive element with a second alloy having a lower melting point than the first alloy. It is recommended that the first alloy has a larger particle size than the second alloy.

Description

The manufacture method of magnetostriction element
Technical field
The present invention relates to the manufacture method of magnetostriction element, particularly contain Sm and transition metal and the manufacture method of the magnetostriction element that forms.
Background technology
When the magnetization strong magnetic material, the phenomenon that the magnetic substance size changes is called magnetostriction, and the material that produces this phenomenon is called magnetostriction materials.Generally have 10 as saturation magnetostriction constant by the caused saturated variable of magnetostriction -5～10 -6Value, the magnetostriction materials with bigger saturation magnetostriction constant are also referred to as giant magnetostrictive material, are widely used in vibrator, wave filter, transmitter etc.
Now, the compound with R (rare earth element) and Fe is RFe 2Compound is that the magnetostriction materials of main body are as the big material of saturation magnetostriction constant and known (for example with reference to patent documentation 1,2,3,4) between Lay Vickers (Laves) shaped metal.But the problem that these materials exist is: when strong, the magnetostriction value is bigger in the external magnetic field that adds, and when externally magnetic field was more weak, the magnetostriction value was then insufficient.So, for RFe 2Compound is the magnetostriction materials of principal phase between Lay Vickers shaped metal, even carried out also making in more weak external magnetic field the research of magnetostriction value increase, having proposed to make it is the scheme that is orientated on big [111] direction of principal axis of magnetostriction constant at easy magnetizing axis.And, as with RFe 2Compound is the material of main body between Lay Vickers shaped metal, owing to have Tb 0.3Dy 0.7Fe 2.0Under the situation of the composition of (atomic ratio), the magnetostriction value is bigger, therefore special this composition that adopts.
Patent documentation 1: No. 3949351 communique of United States Patent (USP)
Patent documentation 2: No. 4152178 communique of United States Patent (USP)
Patent documentation 3: No. 4308474 communique of United States Patent (USP)
Patent documentation 4: No. 4375372 communique of United States Patent (USP)
Summary of the invention
With use Tb in the material 0.3Dy 0.7Fe 2.0Situation the same, can access down the material of bigger magnetostriction value as normal temperature, the material of Sm-Fe system is arranged.
In the past, the magnetostriction element that has used the Sm-Fe based material was by the melt raw material alloy and its molten metal is solidified form, owing to pass through Fe in the process of solidifying 3The peritectoid district of Sm can not make the crystalline orientation unanimity by means of directional freeze.Therefore, present situation is to be merely able to obtain isotropic magnetostriction element and can not to obtain having anisotropic magnetostriction element.
The present invention is based on such technical task and makes, and is the manufacture method that the material that contains Sm and transition metal of representative can obtain to have the magnetostriction element of anisotropic magnetostriction element thereby its purpose is to provide a kind of use with Sm-Fe.
The manufacture method of the magnetostriction element of making under such purpose of the present invention is raw material powder is shaped in magnetic field and after obtaining molding, obtains to have with SmFe by this molding of sintering 2The sintered compact of represented composition can be made thus and has anisotropic magnetostriction element.Here, in above-mentioned composition, can contain one or more elements of selecting among Ni, Co, Mo, W, Cr, Nb, Ta, Ti, V, Ru, Rh, Pt, Ag, Gd, the B micro-ly.At this moment,, also can directly use the powder of final composition as raw material powder, still, preferably will form magnetostriction element principal phase first alloy and than first alloy melting point second low alloy mixes and the powder that obtains uses as raw material powder.Thus, when burning till, low-melting second alloy elder generation's fusion and form liquid phase therefore can acceleration of sintering.Wherein, contain with raw material powder and be not less than 70wt% but be advisable less than first alloy of 100wt%.
And, be advisable greatly than the powder diameter of second alloy with the powder diameter of first alloy.Thus, when being shaped in magnetic field, the orientation that constitutes first alloy of principal phase improves.And in order to improve orientation, the powder of first alloy is not to be constituted and mainly constituted suitable by monocrystal particle by the polycrystalline particle.For this reason,, make the crystalline grain growth, obtain having the monocrystal particle of the particle diameter bigger, and its powder as first alloy used be advisable than second alloy by the polycrystalline particle with particle diameter bigger than second alloy is heat-treated in advance.And it also is effective by means of means such as hydrogen pulverizing second alloy being pulverized imperceptibly.
In obtaining the operation of molding, raw material powder is orientated in 1760kA/m or following magnetic field.
This have with SmFe 2The alloy of represented composition and has for example Tb 0.4Dy 0.6Fe 2.0The alloy phase ratio of composition, magneticanisotropy can be lower.Therefore, in order to obtain equal orientation degree, has Tb 0.4Dy 0.6Fe 2.0The alloy of composition be shaped in magnetic field with 800kA/m, and have with SmFe 2The alloy of represented composition must be wanted the upfield about 1140kA/m.In contrast, as mentioned above, the powder diameter by making first alloy is greater than the powder diameter of second alloy, and raw material powder is orientated in for example 800kA/m about 760kA/m or following low-intensity magnetic field.
According to the present invention, use contains the material of Sm and transition metal, can access to have anisotropic magnetostriction element.And, use orientation and sintering in the time of can carrying out effectively being shaped in the magnetic field as raw material by first alloy that particle diameter is big and low-melting the 2nd alloy.
Description of drawings
Fig. 1 is used for comparison with SmFe 2Represented magnetostriction materials alloy and with Tb 0.4Dy 0.6Fe 2The figure of the magneticanisotropy energy of represented magnetostriction materials alloy.
Fig. 2 is the figure that is used to measure the anisotropic externally-applied magnetic field direction that has or not of sintered compact among the expression embodiment and measures direction.
Embodiment
Explain this invention according to embodiment shown below.
Use the magnetostriction materials that contain Sm and transition metal among the present invention, utilize powder metallurgic method to make and have anisotropic giant magnetostrictive material.
In above-mentioned magnetostriction materials, the part of Sm can be replaced into one or more elements among Y, Nd, the Tb.
As transition metal, preferred one or more element T of selecting among Fe, Ni, the Co, preferred especially Fe.Therefore, as magnetostriction materials, preferably use the material of SmFe system.The part of element T can be replaced into one or more the element M among Mo, W, Cr, Nb, Ta, Ti, V, Ru, Rh, Pt, Ag, Gd, the B.
And, when in magnetostriction materials, using the SmFe based material, preferably have SmFe 2Phase.
This magnetostriction materials can be made through shaping, the such process of sintering in pulverizing, the magnetic field.
At this moment, the material that magnetostriction materials are formed with target also can be pulverized it directly as raw material, makes the manufacture method that giant magnetostrictive material is a feature but adopt in the present embodiment to mix the different raw material powders of forming.
Be to use the raw material powder of multiple composition in detail with different melting points.In such raw material powder, make the fusing point of the raw material (the following principal phase raw material that is called aptly) that becomes principal phase be higher than the fusing point of other raw material (the following crystal boundary phase raw material that is called aptly).So, carry out in the agglomerating process after with these plurality of raw materials powder mixes, if heat up, the then crystal boundary phase raw material of low melting point one side fusing earlier and form liquid phase thus can acceleration of sintering, and improves sintered density.
As the raw material powder that satisfies such condition, the preferred use has SmFe 1.96The powdered alloy of the composition of (fusing point is 900 ℃) has Sm as principal phase raw material, use 2The powdered alloy of the composition of Fe (fusing point is 725 ℃) is as crystal boundary phase raw material.
And, preferably in the particle of the powdered alloy that forms the principal phase raw material, using monocrystal particle, this is because the crystalline orientation increases.
In addition, preferably make the particle diameter of the particle diameter of the powdered alloy that forms the principal phase raw material greater than the powdered alloy that forms crystal boundary phase raw material.This is because if the particle diameter of the powdered alloy of formation principal phase raw material is too small, when then being shaped, also be difficult to orientation even magnetic field plays a role in magnetic field; Otherwise if particle diameter is excessive, then sintered density is difficult to improve, and reliability reduces.
And, in order to improve orientation, form the powdered alloy of principal phase raw material, not by the polycrystalline particle but mainly constituted suitable by monocrystal particle.For this reason, by the polycrystalline particle with particle diameter bigger than the particle diameter of the powdered alloy that forms crystal boundary phase raw material is heat-treated in advance, obtain having the monocrystal particle of the particle diameter bigger, it is used as the powdered alloy that forms the principal phase raw material be advisable than the powdered alloy that forms crystal boundary phase raw material.
Has SmFe in use 1.96The powdered alloy of composition during as the principal phase raw material, preferably in non-oxidizing atmosphere, in 850～900 ℃ of thermal treatments of carrying out 6～48hr, be the monocrystal particle of 12～30 μ m thereby make median size (D50).
On the other hand, the powdered alloy of crystal boundary phase raw material as required, is preferably slightly pulverized by making it absorb hydrogen.The powdered alloy particle of crystal boundary phase raw material produces distortion by absorbing hydrogen and form hydride or hydrogen atom being invaded to crystal, consequently bears incessantly internal stress and breaks, and is slightly pulverized.Has Sm in use 2The powdered alloy of the composition of Fe (fusing point is 725 ℃) is pulverized by making it absorb hydrogen during as crystal boundary phase raw material, can will make the median size of 5～20 μ m at the raw material that has the median size about 20 μ m under the state of raw alloy.
Principal phase raw material and the crystal boundary blending ratio of raw material mutually can suitably determine, but preferably mix according to the following stated.
With the weight percent of principal phase raw material during as a, the principal phase raw material is preferably 70≤a＜100,80≤a≤95 more preferably.When a was too small, when the ratio of the principal phase raw material that is orientated when promptly being shaped in magnetic field was low, the crystalline orientation degree behind the sintering reduced.On the other hand, when a was excessive, promptly the composition of principal phase raw material approached final composition, then lost the meaning of using crystal boundary phase raw material in order to improve sintered density.
With principal phase raw material and crystal boundary raw material weighing and mixing and the magnetostriction materials that obtain mutually, then also can carry out pulverization process.In pulverization process, can from pulverizers such as wet-type ball mill, masher (Attriter) and spraying gun, suitably select.Preferred especially spraying gun, this is because it can apply simultaneously impacts and shearing, prevents the gathering of powder, and the productivity height.Be advisable in rare gas elementes such as in addition, the atmosphere during pulverizing is advisable with non-oxidizing atmosphere, Ar gas or the vacuum.Median size after this pulverizing is 5～20 μ m, is preferably 10～20 μ m.If particle diameter is too small, then oxidation is carried out easily in manufacturing process, makes the Magnetostrictive Properties deterioration.If median size is excessive, then sintering is difficult for carrying out, and sintered density is not high, and ventilate increases.
The magnetostriction materials that mixed are configured as desired shape before sintering.By in magnetic field, carrying out this shaping, mainly the principal phase raw material is arranged in certain orientation, and the magnetostriction materials behind the sintering are orientated on [111] direction of principal axis.The magnetic field that adds is 480～1760kA/m, is preferably 960～1760kA/m.The direction of field direction and pressure is perpendicular or parallel all can.Compacting pressure is 50 * 10 6Pa or more than, be preferably 300 * 10 6Pa or more than.At this, as shown in Figure 1, with formula (1): SmFe 2The magneticanisotropy of represented magnetostriction materials alloy can R for example with Tb 0.4Dy 0.6Fe 2Compare, about half.Therefore, when in magnetic field, being shaped, in order to improve orientation, with Tb 0.4Dy 0.6Fe 2Compare, need higher magnetic field.
The molding that is shaped in magnetic field and obtains is sintered.Sintering condition for 800～900 ℃, preferably carry out being advisable in 3～48 hours at 850～890 ℃.Be advisable in rare gas elementes such as agglomerating atmosphere is advisable with non-oxidizing atmosphere, Ar gas or the vacuum.
The magnetostriction materials of Zhi Zaoing are with formula (1): SmFe like this 2Represented polycrystal becomes on maximum [111] direction of principal axis in magnetostriction and to be orientated.
Like this, the method according to this invention is used the magnetostriction materials that contain Sm and transition metal, can make by powder metallurgic method to have anisotropic giant magnetostrictive material.
[embodiment]
At this, owing to having confirmed to use the magnetostriction materials that contain Sm and transition metal, can having made by powder metallurgic method has anisotropic giant magnetostrictive material, its result is as follows.
At first, the sintered compact that creates the magnetostriction element main body as described below.
At first, as the principal phase raw material, weighing Sm, Fe, and in Ar gas inert atmosphere, melt, manufacturing has SmFe 1.96The raw alloy of composition.Then, this raw alloy 890 ℃ of (be 12hr steady time) thermal treatments of annealing, is made the crystalline grain growth.Is the sieve of 2mm with resulting powdered alloy by mesh, and removing particle diameter is 2mm or above meal.
As crystal boundary phase raw material, weighing Sm, Fe, and in Ar gas inert atmosphere, melt, manufacturing has Sm 2.0The alloy of the composition of Fe.With this powdered alloy in nitrogen atmosphere (concentration is 80%), heat-treat in 150 ℃ (they are 6hr steady time), by making it absorb the hydrogen of about 18000ppm, pulverize alloy, obtain the comminuted powder that median size is 5 μ m, is the sieve of 2mm with this comminuted powder by mesh, and removing particle diameter is 2mm or above meal.
Secondly, resulting principal phase raw material and crystal boundary are carried out combination treatment after the powdered alloy weighing of raw material mutually, it is broken to carry out micro mist by spraying gun again in Ar gas, obtains consisting of SmFe 1.875Alloy powder.
With the resulting alloy powder mould of packing into, in the magnetic field of 480kA/m (6kOe), with 8ton/cm 2Compacting pressure be shaped, obtain molding.At this moment, when being filled into alloy powder in the mould, make alloy powder by being filled with N 2In the pipe arrangement of gas and move.Magnetic field becomes vertical direction (so-called transverse magnetic) to pressure direction and applies.The shape and size of molding are the cube shaped (embodiment) of 10mm * 10mm * 10mm.
For relatively, with the resulting alloy powder mould of packing into, under the state of externally-applied magnetic field not, with above-mentioned the same, with 8ton/cm 2Compacting pressure be shaped, obtain having the molding (comparative example 1) of same size and dimension.
Resulting molding is placed container for sintering and heating up at stove, is that 890 ℃, steady time are that 6hr burns till with equilibrium temperature in Ar gas atmosphere, obtains sintered compact (magnetostriction element main body).This sintered compact is with SmFe 2Represented polycrystal, and crystal grain is orientated on [111] direction of principal axis.
In addition, for relatively, by consisting of SmFe 1.90Raw alloy be heated to 900 ℃ of fusings, and its molten metal is injected into it solidified, form magnetostriction element (comparative example 2) with above-mentioned same shape and size with casting.
To embodiment, the comparative example 1 and 2 that obtains like this, measure its magnetic properties (magnetostriction value).Embodiment and comparative example 1 have also been measured sintered density.
At this, the magnetostriction value is to add to measure when using magnetic field on the direction (directions X) that the field direction that adds when being shaped parallels, measure when use magnetic field with on the perpendicular direction (Y direction) of the field direction that adds when being shaped, adding, with strain gauging separately add the mensuration usefulness magnetic field of 80kA/m (1kOe) time the elongation of sintered compact.At this, as shown in Figure 2, the elongation of sintered compact is to add respectively in directions X and Y direction to measure when using magnetic field, measures on directions X and Y direction.Its result is as shown in table 1.
Table 1
Sintered density (%) The magnetostriction value
Measure field direction
X Y
Elongation is measured direction Elongation is measured direction
X Y Y X
Embodiment 96.34 -475 250 -275 145
Comparative example 1 96.30 -275 65 -245 135
Comparative example 2 - -260 90 -250 85
Comparative example 1 is compared with embodiment, as shown in table 1, in comparative example 1 and 2, when mensuration is directions X with magnetic field, be respectively-275 and-260 with the elongation of measuring the direction (directions X) that parallels with magnetic field, and when mensuration is the Y direction with magnetic field, be respectively-245 and-250 with the elongation of measuring the direction (Y direction) that parallels with magnetic field.
In contrast, in an embodiment, when mensuration is directions X with magnetic field, with the elongation of measuring the direction (directions X) that parallels with magnetic field is-475, and when mensuration is the Y direction with magnetic field, is-275 with the elongation of measuring the direction (Y direction) that parallels with magnetic field, compare as can be known with comparative example 1 and 2, according to the difference of externally-applied magnetic field direction, the magnetostriction value has very big-difference, promptly has anisotropy.
Can confirm thus, can access anisotropic element according to the present invention.

Claims (17)

1. a manufacturing has the method for anisotropic magnetostriction element, it is characterized in that, it comprises that the raw material powder that will contain Sm, Fe at least is shaped and obtains the operation of molding and the described molding of sintering and obtain having with SmFe in magnetic field 2The operation of the sintered compact of represented composition.
2. the manufacture method of magnetostriction element as claimed in claim 1 is characterized in that, first alloy of the principal phase by will forming described magnetostriction element and mix than low-melting second alloy of described first alloy obtains described raw material powder.
3. the manufacture method of magnetostriction element as claimed in claim 2 is characterized in that, described first alloy has with SmFe 1.96Represented composition.
4. as the manufacture method of claim 2 or 3 described magnetostriction elements, it is characterized in that described second alloy has with Sm 2.0The composition that Fe is represented.
5. the manufacture method of magnetostriction element as claimed in claim 2 is characterized in that, described raw material powder contains described first alloy for being not less than 70wt% but less than 100wt%.
6. the manufacture method of magnetostriction element as claimed in claim 2 is characterized in that, it is 80wt%～95wt% that described raw material powder contains described first alloy.
7. the manufacture method of magnetostriction element as claimed in claim 2 is characterized in that, the powder diameter of described first alloy is bigger than the powder diameter of described second alloy.
8. the manufacture method of magnetostriction element as claimed in claim 7 is characterized in that, the powder median size of described first alloy is 12～30 μ m.
9. the manufacture method of magnetostriction element as claimed in claim 7, it is characterized in that, the powder of described first alloy mainly is made of monocrystal particle, by in advance described first alloy being heat-treated, described monocrystal particle is had than the big crystal particle diameter of described second alloy.
10. the manufacture method of magnetostriction element as claimed in claim 9 is characterized in that, the powder of described first alloy in non-oxidizing atmosphere in 850～900 ℃ of thermal treatments of carrying out 6～48 hours.
11. the manufacture method of magnetostriction element as claimed in claim 1 is characterized in that, described molding is sintered 3～48 hours in 800～900 ℃ in non-oxidizing atmosphere.
12. the manufacture method of magnetostriction element as claimed in claim 1 is characterized in that, in obtaining the operation of described molding, described raw material powder is orientated in the magnetic field of 450～1760kA/m.
13. a manufacturing has the method for anisotropic magnetostriction element, it is characterized in that, it comprises having with SmFe 1.96First powdered alloy of represented composition and having with Sm 2.0Second powdered alloy of the composition that Fe is represented mixes and obtains the operation of raw material powder, described raw material powder is shaped in magnetic field and obtains the operation of molding and the described molding of sintering and obtain having with SmFe 2The operation of the sintered compact of represented composition.
14. the manufacture method of magnetostriction element as claimed in claim 13 is characterized in that, it is 80%～95wt% that described raw material powder contains described first alloy.
15. the manufacture method of magnetostriction element as claimed in claim 13 is characterized in that, the powder diameter of described first alloy is 12～30 μ m, and the powder diameter of described second alloy is littler than the powder diameter of described first alloy.
16. the manufacture method of magnetostriction element as claimed in claim 15 is characterized in that, the powder of described first alloy mainly is made of monocrystal particle.
17. the manufacture method of magnetostriction element as claimed in claim 13 is characterized in that, described sintered compact is a polycrystal, and the crystal grain of described sintered compact is orientated on [111] direction of principal axis.
CNA2006100068071A 2005-02-07 2006-02-07 Method for producing magnetostrictive element Pending CN1818121A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP030012/2005 2005-02-07
JP2005030012A JP2006213985A (en) 2005-02-07 2005-02-07 Method for producing magnetostriction element

Publications (1)

Publication Number Publication Date
CN1818121A true CN1818121A (en) 2006-08-16

Family

ID=36778574

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2006100068071A Pending CN1818121A (en) 2005-02-07 2006-02-07 Method for producing magnetostrictive element

Country Status (3)

Country Link
US (1) US20060174726A1 (en)
JP (1) JP2006213985A (en)
CN (1) CN1818121A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103489561A (en) * 2013-09-30 2014-01-01 华南理工大学 Permanent magnet system providing neodymium-iron-boron auxiliary casting magnetic field
CN104201279A (en) * 2014-07-25 2014-12-10 深圳市清研华创新材料有限公司 Preparation method for magnetostrictive material and magnetostrictive material
CN105632673A (en) * 2014-11-20 2016-06-01 有研稀土新材料股份有限公司 Preparation method for permanent magnet material and permanent magnet material
WO2021175174A1 (en) * 2020-03-04 2021-09-10 南京大学 Method for preparing rare earth alloy spherical single crystal magnetic powder, and rare earth giant magnetostrictive material having <111> orientation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4900113B2 (en) * 2007-07-24 2012-03-21 Ｔｄｋ株式会社 Method for producing rare earth permanent sintered magnet
EP2388350B1 (en) * 2009-01-16 2018-09-19 Hitachi Metals, Ltd. Method for producing r-t-b sintered magnet
CN109273182B (en) * 2018-10-19 2020-06-16 广东省稀有金属研究所 Single crystal magnetic powder and preparation method and application thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375372A (en) * 1972-03-16 1983-03-01 The United States Of America As Represented By The Secretary Of The Navy Use of cubic rare earth-iron laves phase intermetallic compounds as magnetostrictive transducer materials
US3949351A (en) * 1974-06-03 1976-04-06 The United States Of America As Represented By The Secretary Of The Navy Variable delay line
US4152178A (en) * 1978-01-24 1979-05-01 The United States Of America As Represented By The United States Department Of Energy Sintered rare earth-iron Laves phase magnetostrictive alloy product and preparation thereof
US4308474A (en) * 1979-11-14 1981-12-29 The United States Of America As Represented By The Secretary Of The Navy Rare earth-iron magnetostrictive materials and devices using these materials
JP3452210B2 (en) * 1994-04-19 2003-09-29 Ｔｄｋ株式会社 Manufacturing method of magnetostrictive material
US6991686B2 (en) * 2004-01-26 2006-01-31 Tdk Corporation Method for producing magnetostrictive material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103489561A (en) * 2013-09-30 2014-01-01 华南理工大学 Permanent magnet system providing neodymium-iron-boron auxiliary casting magnetic field
CN103489561B (en) * 2013-09-30 2016-08-17 华南理工大学 A kind of permanent magnet systems providing neodymium iron boron casting magnetic field-aided
CN104201279A (en) * 2014-07-25 2014-12-10 深圳市清研华创新材料有限公司 Preparation method for magnetostrictive material and magnetostrictive material
CN105632673A (en) * 2014-11-20 2016-06-01 有研稀土新材料股份有限公司 Preparation method for permanent magnet material and permanent magnet material
CN105632673B (en) * 2014-11-20 2017-11-10 有研稀土新材料股份有限公司 The preparation method and permanent-magnet material of permanent-magnet material
WO2021175174A1 (en) * 2020-03-04 2021-09-10 南京大学 Method for preparing rare earth alloy spherical single crystal magnetic powder, and rare earth giant magnetostrictive material having <111> orientation

Also Published As

Publication number Publication date
JP2006213985A (en) 2006-08-17
US20060174726A1 (en) 2006-08-10

Similar Documents

Publication Publication Date Title
EP3196896B1 (en) Heavy rare earth free sintered nd-fe-b magnets and manufacturing process thereof
CN1705761B (en) Alloy containing rare earth element, production method thereof, magnetostrictive device, and magnetic refrigerant material
CN1818121A (en) Method for producing magnetostrictive element
JP6561117B2 (en) Rare earth permanent magnet and manufacturing method thereof
US5129963A (en) Rare earth magnet alloys with excellent hot workability
CN107134335A (en) R T B systems permanent magnet
CN1182548C (en) Rear-earth magnet and its producing method
CN107530772B (en) Magnetic refrigeration module, sintered body, and method for manufacturing magnetic refrigeration module
DE112011102958T5 (en) Magnetic material and process for its production
CN1460270A (en) Rare earth magnet and method for production thereof
EP0530560B1 (en) Process for producing high strength aluminium-based alloy powder
EP3124634A1 (en) Prealloyed iron-based powder, a method for the manufacturing and use thereof and a sintered component
CN101967596B (en) Method for preparing high-performance rare earth-FeCoSi compound with NaZn 13 structure
CN1649046A (en) Forming method in magnetic field, and method for producing rare-earth sintered magnet
KR102605565B1 (en) Method of manufacturing anisotropic rare earth bulk magnet and anisotropic rare earth bulk magnet therefrom
JP2006183151A (en) Method for producing magnetic material powder and method for producing bond magnet
EP0678585B1 (en) Preparation of magnetostrictive material
DE112012001234T5 (en) Magnetic material
CN1572005A (en) Method for producing r-t-b based rare earth element permanent magnet
CN1296499C (en) Method for producing magnetostrictive material
KR102513836B1 (en) Method of manufacturing multiple main phase magnet and multiple main phase magnet therefrom
US7384487B2 (en) Method for producing magnetostrictive element and container for sintering
EP1150309B1 (en) Magnetic powder and bonded magnet
WO2003040421A1 (en) ALLOY FOR Sm-Co BASED MAGNET, METHOD FOR PRODUCTION THEREOF, SINTERED MAGNET AND BONDED MAGNET
WO2019049691A1 (en) Method for producing rare earth magnet

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
AD01 Patent right deemed abandoned
C20 Patent right or utility model deemed to be abandoned or is abandoned