CN102360702A - Simple and convenient functional magnetic material block and preparation method thereof - Google Patents

Simple and convenient functional magnetic material block and preparation method thereof Download PDF

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CN102360702A
CN102360702A CN2011102795669A CN201110279566A CN102360702A CN 102360702 A CN102360702 A CN 102360702A CN 2011102795669 A CN2011102795669 A CN 2011102795669A CN 201110279566 A CN201110279566 A CN 201110279566A CN 102360702 A CN102360702 A CN 102360702A
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material block
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functional material
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简红
严密
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Zhejiang University ZJU
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Abstract

The invention disclose a simple and convenient functional magnetic material block and a preparation method thereof. The general chemical molecular formula of the functional magnetic material block is Fe100-w-x-y-zCowRxByMz, wherein R is one or two of Nd and Pr; M is one or more of the elements Nb, Ti, Zr, Mo, Cr, V, W, Ta, Cu, Al, Zn, Ni, Ga, Ge, Sr, Si, Y, Tb, Dy, La, Ce, Hf, Sm, and Ho; and w, x, y and z are respectively atom percent of element Co, element R, element B and element M, and the atom percent of Fe is 100-w-x-y-z. The preparation method comprises the following steps: compounding various raw materials according to the alloy chemical molecular formula, and smelting to prepare mother alloy; and then preparing the functional magnetic material block by a mould spray casting or suction casting rapid quenching process. The method for preparing the functional magnetic material block disclosed by the invention has the advantages of simple process and small energy consumption; and the obtained material block has the advantages of compact structure, good magnetic hardness and high corrosion-resisting property, and can be widely applied in the field of machinery, communication, computer, and the like.

Description

A kind of easy magnetic functional material block and preparation method thereof
Technical field
The present invention relates to a kind of magnetic functional material, relate in particular to a kind of easy magnetic functional material block and preparation method thereof.
Background technology
The rare-earth iron series permanent magnetic material that with the neodymium iron boron is representative is that energy density is the highest, uses the widest, with the fastest developing speed permanent magnetism material of new generation.The rare-earth iron series permanent magnetic material has been widely used in the energy, machinery, and traffic, computer, household electrical appliances, fields such as medical treatment, it is produced and the Application and Development degree has become one of important symbol of weighing a modern state level of economic development and overall national strength.The preparation method of traditional permanent magnet mainly contains two kinds of sintering process and mull techniques.Sintering process is to obtain magnetic through certain flouring technology, and oriented moulding in magnetic field is pressed into blank in press, and sinter molding obtains permanent magnet then.This method complex process, energy consumption is high, and can not satisfy the demand of complicated shape.Mull technique also is to obtain magnetic through certain flouring technology, with magnetic and binding agent mixed-forming, obtains permanent magnet through after the cured.Because the introducing of binding agent makes that the magnet magnetic property is diluted, so this method is unfavorable for obtaining high performance permanent magnet.In addition, traditional preparation method also is not suitable for preparing undersized block magnet, therefore is necessary to explore a kind of permanent magnet preparation method of efficient energy-saving.
In recent years, some researchers adopt copper mold spray to cast method directly to be worth cylindric, circular and flaky permanent magnet.This method be alloy spray to cast with fusion in the copper mold of certain size, directly obtain nanocrystalline permanent magnet, perhaps obtain non-crystaline amorphous metal earlier, again its heat treatment is obtained permanent magnet.It is simple that this method has technology, low cost, and easy-formation is prone to processing, compact structure, advantage such as corrosion resistance is strong.Yet because the restriction of amorphous formation ability, up to the present report is no more than 1.5mm with the magnet size that this method prepares in the document.This laboratory is in rare-earth iron series permanent-magnet alloy system; Add and the adjusting element ratio through element; Obtained good amorphous formation ability, adopted mould spray to cast method and heat treatment, successfully prepared and be of a size of 0.3mm ~ 20mm; The magnetic functional material block of function admirable, this is most important for applying of permanent magnet.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of easy magnetic functional material block and preparation method thereof is provided.
Magnetic functional material block chemical molecular general formula is Fe 100-w-x-y-zCo wR xB yM z, wherein R is one or both among Nd and the Pr, M is Nb, Ti, Zr, Mo, Cr, V, W, Ta; Cu, Al, Zn, Ni, Ga, Ge, Sr, Si, Y, Tb; Dy, La, Ce, Hf, Sm, one or more in the Ho element, w, x, y and z are respectively the Co element, the R element; B element and M elements atomic percentage, the atomic percent of Fe are 100-w-x-y-z, wherein, 0≤w≤30 at.%, 5≤x≤12 at.%,, 8≤y≤25 at.%, 0≤z≤10 at.%, remaining is Fe content.
The maximum magnetic energy product of said magnetic functional material block (BH) MaxBe 3 ~ 30MGOe.
The preparation method's of easy magnetic functional material block step is following:
Step 1: with feed metal Fe, Co, Nd, Pr, Nb, Ti, Zr, Mo, Cr, V, W, Ta, Cu, Al, Zn, Ni, Ga, Ge, Sr, Si, Y, Tb, Dy, La, Ce, Hf, Sm, Ho and FeB alloy are according to Fe 100-w-x-y-zCo wR xB yM zAlloying component according to the atomic percent weighing and the batching, with claim the repeatedly melting of target component raw material, make the uniform foundry alloy of composition;
Step 2: the Fe of step 1 acquisition 100-w-x-y-zCo wR xB yM zBroken frustillatum Fe behind the foundry alloy scale removal 100-w-x-y-zCo wR xB yM zAlloy;
Step 3: the fritter shape Fe that obtains with step 2 100-w-x-y-zCo wR xB yM zPack into lower ending opening and aperture of alloy is in the quartz ampoule of 0.4mm ~ 1mm; After vacuumizing; In cavity, charge into inert gas as protection gas, adopt the radio-frequency induction coil heating to make alloy melting, regulate electric current by little increase; Treat after the complete fusion of alloy that spray to cast or suction cast onto chilling in the mould, directly obtain Fe 100-w-x-y-zCo wR xB yM zThe magnetic functional material block.
Said magnetic functional material block is of a size of 0.3mm ~ 20mm.
The present invention successfully prepares the magnetic functional material block that is of a size of 0.3mm ~ 20mm through the mould quick quenching technique, and this method technology is simple, and energy consumption is low; Easy-formation, prepared magnetic functional material block structure is fine and close, and hard magnetic property is good; Decay resistance is high, has favorable industrial application prospect.
Embodiment
Magnetic functional material block chemical molecular general formula is Fe 100-w-x-y-zCo wR xB yM z, wherein R is one or both among Nd and the Pr, M is Nb, Ti, Zr, Mo, Cr, V, W, Ta; Cu, Al, Zn, Ni, Ga, Ge, Sr, Si, Y, Tb; Dy, La, Ce, Hf, Sm, one or more in the Ho element, w, x, y and z are respectively the Co element, the R element; B element and M elements atomic percentage, the atomic percent of Fe are 100-w-x-y-z, wherein, 0≤w≤30 at.%, 5≤x≤12 at.%,, 8≤y≤25 at.%, 0≤z≤10 at.%, remaining is Fe content.
The maximum magnetic energy product of said magnetic functional material block (BH) MaxBe 3 ~ 30MGOe.
The preparation method's of easy magnetic functional material block step is following:
Step 1: with feed metal Fe, Co, Nd, Pr, Nb, Ti, Zr, Mo, Cr, V, W, Ta, Cu, Al, Zn, Ni, Ga, Ge, Sr, Si, Y, Tb, Dy, La, Ce, Hf, Sm, Ho and FeB alloy are according to Fe 100-w-x-y-zCo wR xB yM zAlloying component according to the atomic percent weighing and the batching, with claim the repeatedly melting of target component raw material, make the uniform foundry alloy of composition;
Step 2: the Fe of step 1 acquisition 100-w-x-y-zCo wR xB yM zBroken frustillatum Fe behind the foundry alloy scale removal 100-w-x-y-zCo wR xB yM zAlloy;
Step 3: the fritter shape Fe that obtains with step 2 100-w-x-y-zCo wR xB yM zPack into lower ending opening and aperture of alloy is in the quartz ampoule of 0.4mm ~ 1mm; After vacuumizing; In cavity, charge into inert gas as protection gas, adopt the radio-frequency induction coil heating to make alloy melting, regulate electric current by little increase; Treat after the complete fusion of alloy that spray to cast or suction cast onto chilling in the mould, directly obtain Fe 100-w-x-y-zCo wR xB yM zThe magnetic functional material block.
Said magnetic functional material block is of a size of 0.3mm ~ 20mm.
To combine embodiment that the present invention is done further detailed description below.
Embodiment 1: preparation Nd 8Pr 1Fe 64Mo 4B 23The magnetic functional material block
It is 3mm that this embodiment adopts copper mold casting to prepare diameter, and length is at the Nd of 1.5cm-3cm 8Pr 1Fe 64Mo 4B 23Column magnetic functional material block.
Step 1: press atomic percent Nd 8Pr 1Fe 64Mo 4B 23Weighing purity is 99.9% Fe, and purity is 99.5% Nd, and purity is 99.5% Pr; Purity is 99.9% Mo and FeB alloy; With claim the target component raw material put into vacuum arc melting furnace, utilize electric arc to make raw material fusing after vacuumizing, and melt back 5 times is to obtain the uniform Nd of composition 8Pr 1Fe 64Mo 4B 23Foundry alloy.
Step 2: the Nd of step 1 acquisition 8Pr 1Fe 64Mo 4B 23Be broken into fritter behind the foundry alloy scale removal.
Step 3: the Nd that obtains with step 2 8Pr 1Fe 64Mo 4B 23Pack into lower ending opening and aperture of fritter alloy is in the quartz ampoule of 0.4mm ~ 1mm, is evacuated to 4.0 * 10 -3Behind the Pa, in the cavity of spun furnace, charge into high-purity argon gas protection, adopt the radio-frequency induction coil heating, regulate electric current by little increase, treat to inhale after the complete fusion of alloy and cast onto in the copper mold, direct fast quenching obtains this material block of column magnetic function that diameter is 3mm.
Nd according to above-mentioned prepared 8Pr 1Fe 64Mo 4B 23Magnetic functional material block, its XRD figure spectrum show the main phase composition of alloy be (Nd, Pr) 2Fe 14B, transmission electron microscope picture surface microstructure is tiny evenly.Magnet has good hard magnetic property, saturation magnetization M s=1.3T, coercive force H Ci=7.69KOe, magnetic energy product (BH) Max=6.9MGOe.
Embodiment 2: preparation Nd 7Pr 2Fe 57Co 9Nb 3B 22The magnetic functional material block
It is 3mm that this embodiment adopts copper mold spray to cast method to prepare diameter, and length is at the Nd of 1.5cm-3cm 7Pr 2Fe 57Co 9Nb 3B 22Column magnetic functional material block.
Step 1: press atomic percent Nd 7Pr 2Fe 57Co 9Nb 3B 22Weighing purity is 99.9% Fe; Purity is 99.9% Co, and purity is 99.5% Nd, and purity is 99.5% Pr; Purity is 99.9% Nb and FeB alloy; With claim the target component raw material put into vacuum arc melting furnace, utilize electric arc to make raw material fusing after vacuumizing, and melt back 5 times is to obtain the uniform Nd of composition 7Pr 2Fe 57Co 9Nb 3B 22Foundry alloy.
Step 2: the Nd of step 1 acquisition 7Pr 2Fe 57Co 9Nb 3B 22Be broken into fritter behind the foundry alloy scale removal.
Step 3: the Nd that obtains with step 2 7Pr 2Fe 57Co 9Nb 3B 22Pack into lower ending opening and aperture of fritter alloy is in the quartz ampoule of 0.4mm ~ 1mm, is evacuated to 4.0 * 10 -3Behind the Pa; In the cavity of spun furnace, charge into the high-purity argon gas protection, adopt the radio-frequency induction coil heating, regulate electric current by little increase; Treat after the complete fusion of alloy its injection and to inject internal diameter be the copper mold of 3mm, directly fast quenching obtains the column magnetic functional material block that diameter is 3mm.
Nd according to above-mentioned prepared 7Pr 2Fe 57Co 9Nb 3B 22Magnetic functional material block, its XRD figure spectrum show phase composition be (Nd, Pr) 2Fe 14B with (Fe, Co) 3The B phase, transmission electron microscope picture surface microstructure is tiny evenly, and magnetic hysteresis loop shows single-phase characteristic, shows that soft or hard magnetic realizes exchange coupling mutually.Magnet has good hard magnetic property, saturation magnetization M s=1.4T, coercive force H Ci=7.57KOe, magnetic energy product (BH) Max=7.8MGOe.
Embodiment 3: preparation Nd 4Pr 6Fe 69Nb 1Zr 4B 16The magnetic functional material block
It is 3mm that this embodiment adopts copper mold spray to cast method to prepare thickness, and width is 7mm, and length is the Nd of 1.5cm-3cm 4Pr 6Fe 69Nb 1Zr 4B 16Sheet magnetic functional material block.
Step 1: press atomic percent Nd 4Pr 6Fe 69Nb 1Zr 4B 16Weighing purity is 99.9% Fe; Purity is 99.5% Nd, and purity is 99.5% Pr, and purity is 99.9% Nb; Purity is 99.9% Zr and FeB alloy; With claim the target component raw material put into vacuum arc melting furnace, utilize electric arc to make raw material fusing after vacuumizing, and melt back 5 times is to obtain the uniform Nd of composition 4Pr 6Fe 69Nb 1Zr 4B 16Foundry alloy.
Step 2: the Nd of step 1 acquisition 4Pr 6Fe 69Nb 1Zr 4B 16Be broken into fritter behind the foundry alloy scale removal.
Step 3: the Nd that obtains with step 2 4Pr 6Fe 69Nb 1Zr 4B 16Pack into lower ending opening and aperture of fritter alloy is in the quartz ampoule of 0.4mm ~ 1mm, is evacuated to 4.0 * 10 -3Behind the Pa, in the cavity of spun furnace, charge into the high-purity argon gas protection, adopt the radio-frequency induction coil heating; Regulate electric current by little increase; Treat to spray and inject copper mold after the complete fusion of alloy, it is 3mm that direct fast quenching obtains thickness, and width is the sheet magnetic functional material block of 7mm.
Nd according to above-mentioned prepared 4Pr 6Fe 69Nb 1Zr 4B 16Magnetic functional material block, its XRD figure spectrum show phase composition be (Nd, Pr) 2Fe 14B, transmission electron microscope picture surface microstructure is tiny evenly, and magnet has good hard magnetic property, saturation magnetization M s=1.4T, coercive force H Ci=8.13KOe, magnetic energy product (BH) Max=8.6MGOe.
Each item performance of the magnetic functional material block that the foregoing description obtains is shown in table 1 summary.
Table 1 Fe 100-w-x-y-zCo wR xB yM zThe performance of magnetic functional material block
Figure 2011102795669100002DEST_PATH_IMAGE002
。

Claims (4)

1. magnetic functional material block, it is characterized in that: the chemical molecular general formula is Fe 100-w-x-y-zCo wR xB yM z, wherein R is one or both among Nd and the Pr, M is Nb, Ti, Zr, Mo, Cr, V, W, Ta; Cu, Al, Zn, Ni, Ga, Ge, Sr, Si, Y, Tb; Dy, La, Ce, Hf, Sm, one or more in the Ho element, w, x, y and z are respectively the Co element, the R element; B element and M elements atomic percentage, the atomic percent of Fe are 100-w-x-y-z, wherein, 0≤w≤30 at.%, 5≤x≤12 at.%,, 8≤y≤25 at.%, 0≤z≤10 at.%, remaining is Fe content.
2. a kind of magnetic functional material block according to claim 1 is characterized in that: the maximum magnetic energy product of said magnetic functional material block (BH) MaxBe 3 ~ 30MGOe.
3. the preparation method of an easy magnetic functional material block as claimed in claim 1 is characterized in that its step is following:
Step 1: with feed metal Fe, Co, Nd, Pr, Nb, Ti, Zr, Mo, Cr, V, W, Ta, Cu, Al, Zn, Ni, Ga, Ge, Sr, Si, Y, Tb, Dy, La, Ce, Hf, Sm, Ho and FeB alloy are according to Fe 100-w-x-y-zCo wR xB yM zAlloying component according to the atomic percent weighing and the batching, with claim the repeatedly melting of target component raw material, make the uniform foundry alloy of composition;
Step 2: the Fe of step 1 acquisition 100-w-x-y-zCo wR xB yM zBroken frustillatum Fe behind the foundry alloy scale removal 100-w-x-y-zCo wR xB yM zAlloy;
Step 3: the fritter shape Fe that obtains with step 2 100-w-x-y-zCo wR xB yM zPack into lower ending opening and aperture of alloy is in the quartz ampoule of 0.4mm ~ 1mm; After vacuumizing; In cavity, charge into inert gas as protection gas, adopt the radio-frequency induction coil heating to make alloy melting, regulate electric current by little increase; Treat after the complete fusion of alloy that spray to cast or suction cast onto chilling in the mould, directly obtain Fe 100-w-x-y-zCo wR xB yM zThe magnetic functional material block.
4. the preparation method of a kind of easy magnetic functional material block according to claim 3, it is characterized in that: said magnetic functional material block is of a size of 0.3mm ~ 20mm.
CN2011102795669A 2011-09-20 2011-09-20 Simple and convenient functional magnetic material block and preparation method thereof Pending CN102360702A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102360658A (en) * 2011-09-20 2012-02-22 浙江大学 Block-shaped magnetic material and preparation method thereof
CN102856029A (en) * 2012-04-20 2013-01-02 漯河市三鑫稀土永磁材料有限责任公司 High (BH)max quick quenching magnetic powder and preparation method thereof
CN103151132A (en) * 2013-04-03 2013-06-12 辽宁恒德磁业有限公司 NdFeB (neodymium iron boron) magnetic material with ultrafine powder and preparation method thereof
RU2537947C1 (en) * 2013-09-09 2015-01-10 Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов (ФГУП "ВИАМ") Magnetic material, and item made from it
CN104376944A (en) * 2014-11-21 2015-02-25 北矿磁材科技股份有限公司 Rare earth iron boron magnetic powder, rare earth iron boron magnet and preparation method of rare earth iron boron magnetic powder
CN107293386A (en) * 2017-06-29 2017-10-24 成都磁动势科技有限公司 Resistant to elevated temperatures magnetic material
CN108630369A (en) * 2018-06-19 2018-10-09 江苏江淮磁业有限公司 A kind of neodymium cerium Fe-Mn magnetism material preparation method based on cerium

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CN1593820A (en) * 2004-06-22 2005-03-16 浙江大学 High energy gasification/atomization of Fe#-[3]B/R#-[2]Fe#-[14]B nanometer composite permanent magnet powder and its preparation method
CN1242427C (en) * 2003-11-12 2006-02-15 浙江大学 Method for preparing high-performance biphase rare-earth permanent magnet material using hydrogenation heat treatment process
CN102360658A (en) * 2011-09-20 2012-02-22 浙江大学 Block-shaped magnetic material and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1242427C (en) * 2003-11-12 2006-02-15 浙江大学 Method for preparing high-performance biphase rare-earth permanent magnet material using hydrogenation heat treatment process
CN1593820A (en) * 2004-06-22 2005-03-16 浙江大学 High energy gasification/atomization of Fe#-[3]B/R#-[2]Fe#-[14]B nanometer composite permanent magnet powder and its preparation method
CN102360658A (en) * 2011-09-20 2012-02-22 浙江大学 Block-shaped magnetic material and preparation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102360658A (en) * 2011-09-20 2012-02-22 浙江大学 Block-shaped magnetic material and preparation method thereof
CN102856029A (en) * 2012-04-20 2013-01-02 漯河市三鑫稀土永磁材料有限责任公司 High (BH)max quick quenching magnetic powder and preparation method thereof
CN103151132A (en) * 2013-04-03 2013-06-12 辽宁恒德磁业有限公司 NdFeB (neodymium iron boron) magnetic material with ultrafine powder and preparation method thereof
CN103151132B (en) * 2013-04-03 2016-05-11 辽宁恒德磁业有限公司 A kind of neodymium-iron-boron magnetic material with superfine powder and preparation method thereof
RU2537947C1 (en) * 2013-09-09 2015-01-10 Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов (ФГУП "ВИАМ") Magnetic material, and item made from it
CN104376944A (en) * 2014-11-21 2015-02-25 北矿磁材科技股份有限公司 Rare earth iron boron magnetic powder, rare earth iron boron magnet and preparation method of rare earth iron boron magnetic powder
CN107293386A (en) * 2017-06-29 2017-10-24 成都磁动势科技有限公司 Resistant to elevated temperatures magnetic material
CN108630369A (en) * 2018-06-19 2018-10-09 江苏江淮磁业有限公司 A kind of neodymium cerium Fe-Mn magnetism material preparation method based on cerium

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Application publication date: 20120222