CN1528936A - Method for preparing rare-earth magnetostriction material from rare-earth intermediate alloy - Google Patents
Method for preparing rare-earth magnetostriction material from rare-earth intermediate alloy Download PDFInfo
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- CN1528936A CN1528936A CNA03127241XA CN03127241A CN1528936A CN 1528936 A CN1528936 A CN 1528936A CN A03127241X A CNA03127241X A CN A03127241XA CN 03127241 A CN03127241 A CN 03127241A CN 1528936 A CN1528936 A CN 1528936A
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- rare earth
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- giant magnetostrictive
- tbfe
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Abstract
The invention refers to a method for using rare earth middle alloy to produce rare earth magnetism dilation materials. The character lies in that it at least uses one of rare earth middle alloy TbFe, DyFe as the main materials, and adds in rare earth metal Dy, Tb and iron with equilibrium amount to produce the dilation materials Tb1-xDyXFeY alloy, X= 0.5-0.75, Y= 1.75-2.45, the proportion of rare earth middle alloy TbFe, DyFe alloy is 40-100wt%, the TbFe content in rare middle alloy is 5-90wt%, the content of Fe in DyFe is 5-90%. In the process, it reduces the component fluctuation extremely, and ensures the stability of the product. It can reduces the cost greatly, thus the product has more superior performance and price ratio.
Description
One, technical field:
The present invention relates to a kind of rare earth intermediate alloy and prepare the rare earth giant magnetostrictive material method, belong to the preparation field of alloy material.
Two, figure viewed from behind technology:
Ferromagnetic substance is positioned over when magnetizing in the magnetic field, and its shape and size will change, and this phenomenon is a magnetostriction.Doctor Clark of the U.S. in 1972 at first finds TbFe
2, DyFe
2At room temperature has very big magnetostriction coefficient Deng the binary rare-earth iron cpd.But their magnetocrystalline anisotropy is very big, does not have practical value.Further developed the ternary RE iron cpd afterwards, (R
1R
2) Fe
2Compound at room temperature just can obtain very big magnetostriction coefficient down with downfield, and wherein R is a rare earth element.For example, Tb
0.27Dy
0.73Fe
2Magnetostriction coefficient (strain) can reach 1500-2000ppm.Because the magnetostrictive strain of this material is bigger 50 times than the basic alloy of Ni, than the big 5-25 of piezoelectric ceramics doubly, so be called giant magnetostrictive material.The contriver of this material is people such as people such as the A.E.Clark of the U.S. and H.T.Savage, they SEPARATE APPLICATION United States Patent (USP).The patent No. is respectively 3949351 and 4308474.
It all is single high pure rare earth metals that above-mentioned existing patented technology prepares the used raw material rare earth metal R of rare earth ultra-magnetostriction material, and purity is greater than more than 99.9%.When the preparation rare earth ultra-magnetostriction material; single high pure rare earth metals Tb, single high pure rare earth metals Dy and high pure metal Fe are made raw material; under argon shield; with vacuum smelting furnace these three kinds of Metal Melting are smelt rare earth giant magnetostrictive material TbDyFe mother alloy; because generation complex process, the rate of recovery of single high pure rare earth metals are lower, tooling cost is higher, causes costing an arm and a leg of single high pure rare earth metals.Simultaneously also caused the rare earth ultra-magnetostriction material price that adopts such feedstock production also very expensive.
University of Science ﹠ Technology, Beijing passed through Tb in 1993
0.27Dy
0.73Fe
2Adjust chemical ingredients, developed (Tb
1-x-yDy
xR
y) (Fe
1-zM
z)
2Rare earth ultra-magnetostriction material has also been applied for patent, and its patent No. is 93106941.6.
Also have other several units also to carry out the research of rare earth ultra-magnetostriction material at home, and respectively with regard to aspect applications such as manufacture method and equipment relevant patent.
More than existing patented technology prepares the raw material that rare earth ultra-magnetostriction material selects for use and is single high pure rare earth metals and high pure metal iron.
Because adopting single high pure rare earth metals and high metal pure iron is raw material, in preparation TbDyFe mother alloy process, smelting temperature is higher relatively, and is relatively large in the fluctuation of smelting process middle-weight rare earths composition.Owing to adopt single high pure rare earth metals and high pure metal iron, material cost is also higher relatively simultaneously, and this will influence the range of application of rare earth giant magnetostrictive material product, therefore, limit the Application Areas and the market of rare earth giant magnetostrictive material to a certain extent.
Three, summary of the invention:
The objective of the invention is to by being raw material with rare earth intermediate alloy (TbFe, DyFe alloy), guarantee in the rare earth giant magnetostrictive material preparation process, the composition fluctuation of rare earth element when reducing the rare earth giant magnetostrictive material smelting to greatest extent is to guarantee the stable of rare earth giant magnetostrictive material performance.Simultaneously, be raw material with rare earth intermediate alloy (TbFe, DyFe alloy), can reduce raw materials cost significantly, make rare earth giant magnetostrictive material have the superior ratio of performance to price, obtain using more widely.
The present invention is to be raw material with the rare earth intermediate alloy, and used rare earth intermediate alloy is TbFe, DyFe alloy.Fe content 5-90wt% in its composition range TbFe alloy; Fe content 5-90wt% in the DyFe alloy; be equipped with the Fe of rare-earth metal Tb, Dy and the equal amount of equal amount; wherein: the total amount of rare earth intermediate alloy proportion in raw material is 40-100wt%; under argon shield, prepare rare earth giant magnetostrictive material (TbDyFe) mother alloy with vacuum smelting furnace.
1) one-tenth of rare earth giant magnetostrictive material is grouped into
Its composition consists of Tb
1-xDy
xFe
YX=0.5-0.75, Y=1.75-2.45.
2) used starting material
It is rare earth intermediate alloy TbFe, DyFe that the present invention prepares rare earth giant magnetostrictive material raw materials used, Fe content 5-90wt% in its composition range TbFe alloy, Fe content 5-90wt% in the DyFe alloy.
3) manufacturing process
Utilize the vacuum suspension smelting furnace, smelting is cast into the mother alloy bar under the Ar gas shiled.Adopt the vacuum oriented stove that solidifies, utilize the high-frequency induction heating zone melting method to move, preparation crystallographic orientation rare earth giant magnetostrictive material with 3-10mm/min speed.In vacuum heat treatment furnace, through 930-1160 ℃ of thermal treatment 3-20 hour, air cooling or stove were chilled to room temperature.After machining, adopt resistance-strain method principle, carry out the magnetostriction Performance Detection with the magnetostriction measurement instrument.
Adopt the performance of the magnetostriction materials of above-mentioned technology manufacturing to reach:
(1) magnetostriction coefficient λ
", list in table 1
| Measure magnetic field (KA/m) | Compressive pre-stress (Mpa) | Magnetostriction coefficient λ ″(PPm) |
| ????80.0 | ???0 | 450-650 |
| ???10.0 | 900-1250 | |
| ????240.0 | ???0 | 650-1000 |
| ???10.0 | 1200-1600 |
(2) electromechanical coupling factor K
33=0.68-0.75
(3) relative magnetic permeability μ
r=3.5-4.5
(4) Curie temperature T
c=320-360 ℃
(5) density d=9.18-9.21g/cm
3
(6) ultimate compression strength δ=700-750MPa
The invention has the advantages that: 1) the raw materials used rare earth intermediate alloy that is mainly, under the foreign matter content situation identical with single high pure rare earth metals and high purity iron, cost of material is much lower, thereby make rare cost of going up magnetostriction materials descend, make rare earth giant magnetostrictive material have the superior ratio of performance to price.2) because the employing rare earth intermediate alloy is a raw material, in the rare earth giant magnetostrictive material preparation process, the stable of rare earth giant magnetostrictive material performance guaranteed in the composition fluctuation of rare earth element when reducing the rare earth giant magnetostrictive material smelting to greatest extent.
Four, embodiment:
Embodiment:
A, composition are Tb
0.27Dy
0.73Fe
1.98Rare earth giant magnetostrictive material, adopt DyFe alloy (Fe content 5wt%), the 17.5wt% of 43.68wt% high pure metal Tb, all the other make starting material for high-purity Fe, utilize the vacuum suspension smelting furnace, smelting is cast into the mother alloy bar under the Ar gas shiled.Adopt the vacuum oriented stove that solidifies, utilize the high-frequency induction heating zone melting method, move, preparation crystallographic orientation rare earth giant magnetostrictive material with 3-10mm/min speed.In vacuum heat treatment furnace, through 930-1160 ℃ of thermal treatment 3-20 hour, air cooling was to room temperature.After machining, carry out the magnetostriction Performance Detection.
This bar is measured magnetostriction coefficient with the resistance Strain Method after thermal treatment, processing, its performance reaches:
(1) magnetostriction coefficient λ
", list in table 2
| Measure magnetic field (KA/m) | Compressive pre-stress (Mpa) | Magnetostriction coefficient λ ″(PPm) |
| ????80.0 | ????0 | ????508 |
| ????10.0 | ????1130 | |
| ????240.0 | ????0 | ????900 |
| ????10.0 | ????1550 |
(2) electromechanical coupling factor K
33=0.69
(3) relative magnetic permeability μ
r=3.7
(4) Curie temperature T
c=323 ℃
(5) density d=9.19g/cm
3
(6) ultimate compression strength δ=702MPa
B, composition are Tb
0.3Dy
0.7Fe
1.98Rare earth giant magnetostrictive material.Adopt the DyFe alloy (Fe content 44.2wt%) of 75wt%, TbFe (the Fe content 30wt%) alloy of 25wt%, utilize the vacuum suspension smelting furnace, smelting is cast into the mother alloy bar under the Ar gas shiled.Adopt the vacuum oriented stove that solidifies, utilize the high-frequency induction heating zone melting method, move, preparation crystallographic orientation rare earth giant magnetostrictive material with 3-10mm/min speed.In vacuum heat treatment furnace, through 930-1160 ℃ of thermal treatment 3-20 hour, air cooling was to room temperature.After machining, carry out the magnetostriction Performance Detection.
This bar is measured magnetostriction coefficient with the resistance Strain Method after thermal treatment, processing, its performance reaches:
(1) magnetostriction coefficient λ
", list in table 3
| Measure magnetic field (KA/m) | Compressive pre-stress (Mpa) | Magnetostriction coefficient λ ″(PPm) |
| ????80.0 | ????0 | ????650 |
| ????10.0 | ????1250 | |
| ????240.0 | ????0 | ????965 |
| ????10.0 | ????1604 |
(2) electromechanical coupling factor K
33=0.72
(3) relative magnetic permeability μ
r=4.4
(4) Curie temperature T
c=351 ℃
(5) density d=9.21g/cm
3
(6) ultimate compression strength δ=735MPa
C, composition are Tb
0.5Dy
0.5Fe
1.98Rare earth giant magnetostrictive material; adopt DyFe alloy (Fe content 90wt%), the 33.4wt% of 41wt% TbFe (Fe content 12.2wt%) alloy, all the other make starting material for high pure metal Dy; utilize the vacuum suspension smelting furnace, smelting is cast into the mother alloy bar under the Ar gas shiled.Adopt the vacuum oriented stove that solidifies, utilize the high-frequency induction heating zone melting method, move, preparation crystallographic orientation rare earth giant magnetostrictive material with 3-10mm/min speed.In vacuum heat treatment furnace, through 930-1160 ℃ of thermal treatment 3-20 hour, air cooling was to room temperature.After machining, carry out the magnetostriction Performance Detection.
This bar is measured magnetostriction coefficient with the resistance Strain Method after thermal treatment, processing, its performance reaches:
(1) magnetostriction coefficient λ
", list in table 4
| Measure magnetic field (KA/m) | Compressive pre-stress (Mpa) | Magnetostriction coefficient λ ″(PPm) |
| ????80.0 | ????0 | ????480 |
| ????10.0 | ????976 | |
| ????240.0 | ????0 | ????658 |
| ????10.0 | ????1253 |
(2) electromechanical coupling factor K
33=0.68
(3) relative magnetic permeability μ
r=3.9
(4) Curie temperature T
c=331 ℃
(5) density d=9.18g/cm
3
(6) ultimate compression strength δ=704MPa
Claims (2)
1, a kind of rare earth intermediate alloy prepares the method for rare earth giant magnetostrictive material, it is characterized in that causing few is main raw material with a kind of in rare earth intermediate alloy TbFe, the DyFe alloy, is equipped with rare earth metal Dy, the Tb of equal amount and the iron of equal amount and prepares rare earth giant magnetostrictive material Tb
1-xDy
xFe
YAlloy, wherein: X=0.5-0.75, Y=1.75-2.45, the total amount of rare earth intermediate alloy TbFe, DyFe alloy proportion in raw material is 40-100wt%, Fe content among the above-mentioned rare earth intermediate alloy TbFe is 5-90wt%, and the Fe content among the alloy DyFe is 5-90wt%.
2, rare earth intermediate alloy according to claim 1 prepares the method for rare earth giant magnetostrictive material, it is characterized in that utilizing the vacuum suspension smelting furnace, under the Ar gas shiled, the raw material smelting is cast into the mother alloy bar, adopt the vacuum oriented stove that solidifies, utilize the high-frequency induction heating zone melting method to move, preparation crystallographic orientation rare earth giant magnetostrictive material with the speed of 3-10mm/min; In vacuum heat treatment furnace, through 930-1160 ℃ of thermal treatment 3-20 hour, air cooling or stove were chilled to room temperature.
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|---|---|---|---|
| CNB03127241XA CN1296505C (en) | 2003-09-30 | 2003-09-30 | Method for preparing rare-earth magnetostriction material from rare-earth intermediate alloy |
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|---|---|---|---|
| CNB03127241XA CN1296505C (en) | 2003-09-30 | 2003-09-30 | Method for preparing rare-earth magnetostriction material from rare-earth intermediate alloy |
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|---|---|
| CN1528936A true CN1528936A (en) | 2004-09-15 |
| CN1296505C CN1296505C (en) | 2007-01-24 |
Family
ID=34286009
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073249A (en) * | 2021-02-26 | 2021-07-06 | 湖南大学 | Preparation method of <111> + <110> preferred orientation giant magnetostrictive material TbxDy1-xFey |
| CN115058771A (en) * | 2022-06-22 | 2022-09-16 | 清华大学 | Preparation method and device of rare earth-iron-based magnetostrictive single crystal material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041848C (en) * | 1993-06-15 | 1999-01-27 | 北京科技大学 | Rare-earth-iron super magnetostriction material |
| JPH0827545A (en) * | 1994-07-15 | 1996-01-30 | Nippon Denko Kk | Material giving huge magnetic strain and production thereof |
| CN1132955C (en) * | 2001-01-12 | 2003-12-31 | 甘肃天星稀土功能材料有限公司 | Method and device for continuously producing macro magnetostriction material in large scale |
| JP2003019320A (en) * | 2001-07-05 | 2003-01-21 | Maruhon Ind Co Ltd | Game machine |
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- 2003-09-30 CN CNB03127241XA patent/CN1296505C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073249A (en) * | 2021-02-26 | 2021-07-06 | 湖南大学 | Preparation method of <111> + <110> preferred orientation giant magnetostrictive material TbxDy1-xFey |
| CN113073249B (en) * | 2021-02-26 | 2022-12-02 | 湖南大学 | Preparation method of <111> + <110> preferred orientation giant magnetostrictive material TbxDy1-xFey |
| CN115058771A (en) * | 2022-06-22 | 2022-09-16 | 清华大学 | Preparation method and device of rare earth-iron-based magnetostrictive single crystal material |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Ketian Magnet Co., Ltd. Assignor: Baotou Inst of Rare Earth Contract fulfillment period: 2008.10.17 to 2014.10.16 contract change Contract record no.: 2008990000855 Denomination of invention: Method for preparing rare-earth magnetostriction material from rare-earth intermediate alloy Granted publication date: 20070124 License type: Exclusive license Record date: 20081021 |
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Assignee: Ruike Rare-earth Metallurgy and Functional Materials State Engineering Research Assignor: Baotou Inst of Rare Earth Contract fulfillment period: 2008.10.20 to 2013.10.20 contract change Contract record no.: 2008150000017 Denomination of invention: Method for preparing rare-earth magnetostriction material from rare-earth intermediate alloy Granted publication date: 20070124 License type: Exclusive license Record date: 2008.12.9 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.17 TO 2014.10.16; CHANGE OF CONTRACT Name of requester: NINGBO KETIAN MAGNETISM CO., LTD. Effective date: 20081021 Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.20 TO 2013.10.20; CHANGE OF CONTRACT Name of requester: RUIKE RARE EARTHS METALLURGY AND FUNCTION MATERIAL Effective date: 20081209 |
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Granted publication date: 20070124 Termination date: 20130930 |