CN107195415A - A kind of magnetic material and preparation method thereof - Google Patents
A kind of magnetic material and preparation method thereof Download PDFInfo
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—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
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- 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
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys 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
- H01F1/0575—Alloys 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
- H01F1/0576—Alloys 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
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.
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Citations (5)
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 |
-
2017
- 2017-06-19 CN CN201710465571.6A patent/CN107195415A/en not_active Withdrawn
Patent Citations (5)
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)
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 * |
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