CN107195415A - A kind of magnetic material and preparation method thereof - Google Patents

A kind of magnetic material and preparation method thereof Download PDF

Info

Publication number
CN107195415A
CN107195415A CN201710465571.6A CN201710465571A CN107195415A CN 107195415 A CN107195415 A CN 107195415A CN 201710465571 A CN201710465571 A CN 201710465571A CN 107195415 A CN107195415 A CN 107195415A
Authority
CN
China
Prior art keywords
parts
magnetic material
preparation
ingot casting
raw material
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.)
Withdrawn
Application number
CN201710465571.6A
Other languages
Chinese (zh)
Inventor
王飞
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.)
Hefei Bo Tai Tai Electronic Technology Co Ltd
Original Assignee
Hefei Bo Tai Tai Electronic Technology Co Ltd
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 Hefei Bo Tai Tai Electronic Technology Co Ltd filed Critical Hefei Bo Tai Tai Electronic Technology Co Ltd
Priority to CN201710465571.6A priority Critical patent/CN107195415A/en
Publication of CN107195415A publication Critical patent/CN107195415A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032Magnets 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
    • H01F1/04Magnets 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
    • H01F1/047Alloys characterised by their composition
    • H01F1/053Alloys characterised by their composition containing rare earth metals
    • H01F1/055Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/02Making ferrous alloys by powder metallurgy
    • C22C33/0257Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/005Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/10Ferrous alloys, e.g. steel alloys containing cobalt
    • C22C38/105Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032Magnets 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
    • H01F1/04Magnets 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
    • H01F1/047Alloys characterised by their composition
    • H01F1/053Alloys characterised by their composition containing rare earth metals
    • H01F1/055Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0576Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together pressed, e.g. hot working

Abstract

The invention discloses a kind of magnetic material and preparation method thereof, including following raw material:Fe, Co, Ru, Y, W, As, Ti, Re, Dy, Ni, Ce, Nb and Nd.Its preparation method is first, by raw material mixed grinding, to obtain compound;The compound is melt into ingot casting at high temperature again;After the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder;Finally magnetic material powder is passed through compressing.The magnetic material of the present invention is prepared simply, and low production cost, mechanical strength is high, and ageing-resistant, magnetic property is superior, coercivity and HCJ enhancing, with wide market prospects.

Description

A kind of magnetic material and preparation method thereof
Technical field
The invention belongs to field of magnetic material, and in particular to a kind of magnetic material and preparation method thereof.
Background technology
The development experience of magnetic material is from inorganic to organic, solid-state to liquid, macroscopic view are seen to being situated between, electronics magnetic order to core Magnetic order ferromagnetic material, single type show excellent magnetic property and overall characteristic to compound.Magnetic material is due to dividing Class standard is different with emphasis, there is different classification.General magnetic material can be divided into by application type classification:Permanent magnetism material Material, soft magnetic materials etc..Magnetic material be primarily referred to as by transition elements iron, cobalt, nickel and its alloy etc. constitute can directly or Practice midwifery the material of magnetisation.From application function, magnetic material is divided into:Soft magnetic materials, permanent-magnet material, magnetic recording-square magnetic material The species such as material, gyromagnetic material.Magnetic material is the important foundation functional material of electronics industry, is widely used in computer, electronics The daily living article such as the industrial circles such as device, communication, automobile and Aero-Space and household electrical appliance, toy for children, with the world Economic and science and technology fast development, the demand of magnetic material will be unprecedented wide.Magnetic material is in electronics, computer, information The tradition such as communication, medical treatment, Aero-Space, automobile, wind-powered electricity generation, environmental protection and energy saving and emerging field all play an important role.Magnetic Material has turned into promotes hi-tech development and the irreplaceable material of modern economy progress, and development prospect is optimistic.
The content of the invention
For problems of the prior art, the invention provides a kind of magnetic material and preparation method thereof, this kind of magnetic Property material prepare simple, low production cost, mechanical strength is high, and ageing-resistant, magnetic property is superior, coercivity and HCJ Enhancing, with wide market prospects.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of magnetic material, including following raw material by weight:Fe80-100 parts, Co2.4-4.8 parts, Ru0.2- 0.8 part, Y0.4-1.0 parts, W0.2-0.7 parts, As0.1-0.5 parts, Ti0.4-0.9 parts, Re0.2-0.8 parts, Dy0.3-0.9 parts, Ni1.7-3.5 parts, Ce0.5-1.1 parts, Nb0.7-2.1 parts and Nd1.3-3.3 parts.
Further, the magnetic material includes following raw material by weight:Fe85-95 parts, Co3.0-4.2 parts, Ru0.4-0.6 parts, Y0.6-0.8 parts, W0.3-0.5 parts, As0.2-0.4 parts, Ti0.6-0.8 parts, Re0.4-0.6 parts, Dy0.5- 0.7 part, Ni2.0-3.0 parts, Ce0.7-0.9 parts, Nb1.2-1.8 parts and Nd1.7-2.9 parts.
Yet further, the magnetic material includes following raw material by weight:Fe90 parts, Co3.6 parts, Ru0.5 Part, Y0.7 parts, W0.4 parts, As0.3 parts, Ti0.7 parts, Re0.5 parts, Dy0.6 parts, Ni2.5 parts, Ce0.8 parts, Nb1.5 parts and Nd2.3 parts.
A kind of preparation method of above-mentioned magnetic material, is followed the steps below:
(1) raw material simple substance is weighed by the weight;
(2) by raw material mixed grinding, compound is obtained;
(3) compound is melt into ingot casting at high temperature;
(4) after the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder;
(5) finally magnetic material powder passed through compressing.
Further, in step (2), the compound is mixed to prepare by ball mill grinding to particle diameter≤2mm.
Further, in step (3), the compound is to be delivered to progress melting processing, smelting temperature in smelting furnace For 1640 DEG C~1820 DEG C, smelting time is 7~9h.
Further, the heating rate of the smelting furnace is 70-80 DEG C/min.
Further, in step (5), the magnetic material powder be by ball mill by ingot casting be ground to particle diameter≤ Made from 1mm.
Beneficial effects of the present invention:The magnetic material of the present invention prepare it is simple, low production cost (including cost of material and Processing technology), mechanical strength is high, and ageing-resistant, magnetic property is superior, coercivity and HCJ enhancing, after testing, its remanent magnetism Br is promoted to 4600-5200Gs, and coercivity is enhanced to 278KA/m-304KA/m, and HCJ is enhanced to 51000-53000e, With wide market prospects.
Embodiment
The embodiment of the present invention is further described with reference to embodiment, following examples are only used for more Technical scheme is clearly demonstrated, and can not be limited the scope of the invention with this.
Embodiment 1
A kind of magnetic material, including following raw material:Fe80kg、Co2.4kg、Ru0.2kg、Y0.4kg、W0.2kg、 As0.1kg, Ti0.4kg, Re0.2kg, Dy0.3kg, Ni1.7kg, Ce0.5kg, Nb0.7kg and Nd1.3kg.
A kind of preparation method of above-mentioned magnetic material, is followed the steps below:
(1) raw material is first mixed to prepare compound by ball mill grinding to particle diameter≤2mm;
(2) compound is delivered in smelting furnace again and is melt into ingot casting, smelting temperature is 1640 DEG C, smelting time is 7h, and the heating rate of smelting furnace is 70 DEG C/min;
(3) after after the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder, particularly passes through ball milling Ingot casting is ground to particle diameter≤1mm by machine;
(4) magnetic material powder is finally passed through into the compressing magnetic material that the present invention is made.
Embodiment 2
A kind of magnetic material, including following raw material:Fe85kg、Co3.0kg、Ru0.4kg、Y0.6kg、W0.3kg、 As0.2kg, Ti0.6kg, Re0.4kg, Dy0.5kg, Ni2.0kg, Ce0.7kg, Nb1.2kg and Nd1.7kg.
A kind of preparation method of above-mentioned magnetic material, is followed the steps below:
(1) raw material is first mixed to prepare compound by ball mill grinding to particle diameter≤2mm;
(2) compound is delivered in smelting furnace again and is melt into ingot casting, smelting temperature is 1680 DEG C, smelting time is 7.5h, and the heating rate of smelting furnace is 72 DEG C/min;
(3) after after the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder, particularly passes through ball milling Ingot casting is ground to particle diameter≤1mm by machine;
(4) magnetic material powder is finally passed through into the compressing magnetic material that the present invention is made.
Embodiment 3
A kind of magnetic material, including following raw material:Fe90kg、Co3.6kg、Ru0.5kg、Y0.7kg、W0.4kg、 As0.3kg, Ti0.7kg, Re0.5kg, Dy0.6kg, Ni2.5kg, Ce0.8kg, Nb1.5kg and Nd2.3kg.
A kind of preparation method of above-mentioned magnetic material, is followed the steps below:
(1) raw material is first mixed to prepare compound by ball mill grinding to particle diameter≤2mm;
(2) compound is delivered in smelting furnace again and is melt into ingot casting, smelting temperature is 1710 DEG C, smelting time is 8h, and the heating rate of smelting furnace is 75 DEG C/min;
(3) after after the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder, particularly passes through ball milling Ingot casting is ground to particle diameter≤1mm by machine;
(4) magnetic material powder is finally passed through into the compressing magnetic material that the present invention is made.
Embodiment 4
A kind of magnetic material, including following raw material:Fe100kg、Co4.8kg、Ru0.8kg、Y1.0kg、W0.7kg、 As0.5kg, Ti0.9kg, Re0.8kg, Dy0.9kg, Ni3.5kg, Ce1.1kg, Nb2.1kg and Nd3.3kg.
A kind of preparation method of above-mentioned magnetic material, is followed the steps below:
(1) raw material is first mixed to prepare compound by ball mill grinding to particle diameter≤2mm;
(2) compound is delivered in smelting furnace again and is melt into ingot casting, smelting temperature is 1820 DEG C, smelting time is 9h, and the heating rate of smelting furnace is 80 DEG C/min;
(3) after after the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder, particularly passes through ball milling Ingot casting is ground to particle diameter≤1mm by machine;
(4) magnetic material powder is finally passed through into the compressing magnetic material that the present invention is made.
Embodiment 5
A kind of magnetic material, including following raw material:Fe95kg、Co4.2kg、Ru0.6kg、Y0.8kg、W0.5kg、 As0.4kg, Ti0.8kg, Re0.6kg, Dy0.7kg, Ni3.0kg, Ce0.9kg, Nb1.8kg and Nd2.9kg.
A kind of preparation method of above-mentioned magnetic material, is followed the steps below:
(1) raw material is first mixed to prepare compound by ball mill grinding to particle diameter≤2mm;
(2) compound is delivered in smelting furnace again and is melt into ingot casting, smelting temperature is 1780 DEG C, smelting time is 8.5h, and the heating rate of smelting furnace is 78 DEG C/min;
(3) after after the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder, particularly passes through ball milling Ingot casting is ground to particle diameter≤1mm by machine;
(4) magnetic material powder is finally passed through into the compressing magnetic material that the present invention is made.
Embodiment 6
A kind of magnetic material, including following raw material:Fe90kg、Co3.6kg、Ru0.5kg、Y0.7kg、W0.4kg、 As0.3kg, Ti0.7kg, Re0.5kg, Dy0.6kg, Ni2.5kg, Ce0.8kg, Nb1.5kg and Nd2.3kg.
A kind of preparation method of above-mentioned magnetic material, is followed the steps below:
(1) raw material is first mixed to prepare compound by ball mill grinding to particle diameter≤2mm;
(2) compound is delivered in smelting furnace again and is melt into ingot casting, smelting temperature is 1640 DEG C DEG C, smelting time It is 70 DEG C/min for 9h, and smelting furnace heating rate;
(3) after after the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder, particularly passes through ball milling Ingot casting is ground to particle diameter≤1mm by machine;
(4) magnetic material powder is finally passed through into the compressing magnetic material that the present invention is made.
Magnetic detection
Magnetic detection is carried out to magnetic material made from above-described embodiment 1-3, specific detection project and data see the table below 1;
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (8)

1. a kind of magnetic material, it is characterised in that including following raw material by weight:Fe80-100 parts, Co2.4-4.8 Part, Ru0.2-0.8 parts, Y0.4-1.0 parts, W0.2-0.7 parts, As0.1-0.5 parts, Ti0.4-0.9 parts, Re0.2-0.8 parts, Dy0.3-0.9 parts, Ni1.7-3.5 parts, Ce0.5-1.1 parts, Nb0.7-2.1 parts and Nd1.3-3.3 parts.
2. a kind of magnetic material according to claim 1, it is characterised in that including following raw material by weight: Fe85-95 parts, Co3.0-4.2 parts, Ru0.4-0.6 parts, Y0.6-0.8 parts, W0.3-0.5 parts, As0.2-0.4 parts, Ti0.6-0.8 Part, Re0.4-0.6 parts, Dy0.5-0.7 parts, Ni2.0-3.0 parts, Ce0.7-0.9 parts, Nb1.2-1.8 parts and Nd1.7-2.9 parts.
3. a kind of magnetic material according to claim 2, it is characterised in that including following raw material by weight: Fe90 parts, Co3.6 parts, Ru0.5 parts, Y0.7 parts, W0.4 parts, As0.3 parts, Ti0.7 parts, Re0.5 parts, Dy0.6 parts, Ni2.5 parts, Ce0.8 parts, Nb1.5 parts and Nd2.3 parts.
4. the preparation method of a kind of magnetic material as described in claim 1-3 any one, it is characterised in that including following step Suddenly:
(1) raw material simple substance is weighed by the weight;
(2) by raw material mixed grinding, compound is obtained;
(3) compound is melt into ingot casting at high temperature;
(4) after the ingot casting is cooled to room temperature, crushing grinding obtains magnetic material powder;
(5) finally magnetic material powder passed through compressing.
5. the preparation method of a kind of magnetic material according to claim 4, it is characterised in that in step (2), described mixed Material is closed to be mixed to prepare by ball mill grinding to particle diameter≤2mm.
6. the preparation method of a kind of magnetic material according to claim 4, it is characterised in that in step (3), described mixed It is to be delivered to progress melting processing in smelting furnace to close material, and smelting temperature is 1640 DEG C~1820 DEG C, and smelting time is 7~9h.
7. a kind of preparation method of magnetic material according to claim 6, it is characterised in that the heating speed of the smelting furnace Rate is 70-80 DEG C/min.
8. the preparation method of a kind of magnetic material according to claim 4, it is characterised in that in step (5), the magnetic Property material powder is that ingot casting is ground to made from particle diameter≤1mm by ball mill.
CN201710465571.6A 2017-06-19 2017-06-19 A kind of magnetic material and preparation method thereof Withdrawn CN107195415A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710465571.6A CN107195415A (en) 2017-06-19 2017-06-19 A kind of magnetic material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710465571.6A CN107195415A (en) 2017-06-19 2017-06-19 A kind of magnetic material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN107195415A true CN107195415A (en) 2017-09-22

Family

ID=59879317

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710465571.6A Withdrawn CN107195415A (en) 2017-06-19 2017-06-19 A kind of magnetic material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN107195415A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1442866A (en) * 2002-03-01 2003-09-17 北京科技大学 Rare earth iron base soft magnetic metallic glass having very large super cooling region
CN102933335A (en) * 2010-06-09 2013-02-13 新东工业株式会社 Iron group-based soft magnetic powder
CN104464995A (en) * 2014-12-19 2015-03-25 苏州宽温电子科技有限公司 Transformer composite magnetic material and preparing method thereof
CN105448451A (en) * 2014-09-22 2016-03-30 株式会社东芝 Magnetic part, method for producing magnetic part, and inductor element
CN106782970A (en) * 2017-01-25 2017-05-31 钢铁研究总院 A kind of iron cobalt-based low-temperature coefficient permanent-magnet material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1442866A (en) * 2002-03-01 2003-09-17 北京科技大学 Rare earth iron base soft magnetic metallic glass having very large super cooling region
CN102933335A (en) * 2010-06-09 2013-02-13 新东工业株式会社 Iron group-based soft magnetic powder
CN105448451A (en) * 2014-09-22 2016-03-30 株式会社东芝 Magnetic part, method for producing magnetic part, and inductor element
CN104464995A (en) * 2014-12-19 2015-03-25 苏州宽温电子科技有限公司 Transformer composite magnetic material and preparing method thereof
CN106782970A (en) * 2017-01-25 2017-05-31 钢铁研究总院 A kind of iron cobalt-based low-temperature coefficient permanent-magnet material

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
沈金瑞: "《真空电子新材料》", 31 July 1986 *
龙毅: "《材料物理性能》", 30 June 2009, 中南大学出版社 *

Similar Documents

Publication Publication Date Title
CN102909381B (en) Method for preparing high coercive force manganese-bismuth magnetic powder by doping cobalt nano-particles
CN102543342A (en) Sintered neodymium-iron-boron-based permanent magnet material with high coercive force and high corrosion resistance, prepared by doping copper nano-particles, and preparation method thereof
CN105513734B (en) Neodymium iron boron magnetic body weight lucium, neodymium iron boron magnetic body and preparation method thereof
CN104700973B (en) A kind of rare-earth permanent magnet being made up of the common association raw ore mischmetal of Bayan Obo and preparation method thereof
CN103785845B (en) The preparation method of a kind of minute spherical Sm-Fe-N system permanent magnetism powder
CN104078175B (en) A kind of preparation method of samarium cobalt-based nanocrystalline permanent magnet material
CN102568809A (en) Method for preparing corrosion-resistant high-performance sintered neodymium iron boron magnets
CN111210963A (en) High-performance yttrium cerium based rare earth permanent magnet and preparation method thereof
CN102568731A (en) High-corrosion-resistance sintered neodymium-iron-boron-based permanent magnet material prepared by doping zinc nano-particles and preparation method thereof
CN104064301A (en) NdFeB magnet and preparation method thereof
CN101717888A (en) Nano-crystalline composite NdFeB permanent magnetic alloy and method for producing same
CN105957673A (en) Isotropic rare earth permanent magnetic powder and preparation method thereof
CN106997800B (en) A kind of no rare earth MnAlCuC permanent-magnet alloy and preparation method thereof
CN106298134A (en) A kind of double principal phase agglomeration permanent magnetic material and preparation method and application
CN106158213A (en) A kind of high-coercivity neodymium-iron-boronpermanent-magnet permanent-magnet material and preparation method thereof
CN103060657A (en) Method for preparing sintered neodymium iron boron permanent magnet material with high coercive force and high corrosion resistance
CN107195415A (en) A kind of magnetic material and preparation method thereof
CN107833725A (en) A kind of non-rear-earth-doped new manganese bismuth permanent-magnet material and preparation method thereof
CN108447641B (en) A kind of iron-based composite soft magnetic alloy of amorphous nano-crystalline and preparation method thereof
CN103219145A (en) Method for preparing samarium cobalt and iron cobalt composite magnet
CN105070448A (en) High-performance cerium-containing cast sheet magnet and preparation method thereof
CN103632791B (en) A kind of high-coercivity neodymium-iron-boronpermanent-magnet permanent-magnet material and preparation method thereof
JP2015212415A (en) CORE-SHELL-SHELL FeCo/SiO2/MnBi NANOPARTICLE PREPARATION METHOD AND CORE-SHELL-SHELL FeCo/SiO2/MnBi NANOPARTICLE
CN115732155A (en) High-coercivity neodymium-iron-boron magnetic material and preparation method thereof
CN104157388A (en) Manufacture method of circular ferrite ultra-anisotropic radially-oriented magnet

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20170922

WW01 Invention patent application withdrawn after publication