CN112542285B - High-entropy soft magnetic material with self-oxidation core-shell structure and preparation method thereof - Google Patents
High-entropy soft magnetic material with self-oxidation core-shell structure and preparation method thereof Download PDFInfo
- Publication number
- CN112542285B CN112542285B CN202011180551.2A CN202011180551A CN112542285B CN 112542285 B CN112542285 B CN 112542285B CN 202011180551 A CN202011180551 A CN 202011180551A CN 112542285 B CN112542285 B CN 112542285B
- Authority
- CN
- China
- Prior art keywords
- soft magnetic
- entropy
- core
- entropy alloy
- 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.)
- Active
Links
- 239000011258 core-shell material Substances 0.000 title claims abstract description 18
- 239000000696 magnetic material Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 title claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 49
- 239000000956 alloy Substances 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 13
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006701 autoxidation reaction Methods 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000013078 crystal Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 4
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 4
- 229910000420 cerium oxide Inorganic materials 0.000 claims abstract description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000001238 wet grinding Methods 0.000 claims description 13
- 238000009837 dry grinding Methods 0.000 claims description 11
- 238000000498 ball milling Methods 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910002545 FeCoNi Inorganic materials 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000006247 magnetic powder Substances 0.000 abstract description 5
- 238000000713 high-energy ball milling Methods 0.000 abstract description 3
- 229910020630 Co Ni Inorganic materials 0.000 abstract description 2
- 229910002440 Co–Ni Inorganic materials 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical group 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910019233 CoFeNi Inorganic materials 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 238000005551 mechanical alloying Methods 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- H01F1/12—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 soft-magnetic materials
- H01F1/33—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 soft-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a high-entropy soft magnetic material with a core-shell structure generated by autoxidation and a preparation method thereof, wherein soft magnetic nano iron cobalt nickel principal element high-entropy alloy is taken as a core, rare earth cerium autoxidized CeO 2 is taken as a shell, and an autoxidized CeO 2 coated nano high-entropy alloy magnetic crystal powder material is formed. The preparation method comprises designing a high-entropy alloy system with soft magnetic property, and performing vacuum high-energy ball milling according to the proportion to prepare micro-nano magnetic high-entropy alloy powder taking Fe-Co-Ni as a principal component; and preparing the core-shell structure magnetic powder with cerium oxide as a shell and micro-nano high-entropy alloy as a core by adopting a rare earth cerium autoxidation method. The soft magnetic powder material obtained by the invention has higher magnetic saturation resistance and lower coercive force, and can reduce iron loss.
Description
Technical Field
The invention belongs to the technical field of magnetic materials, and particularly relates to a high-entropy soft magnetic material with a core-shell structure generated by autoxidation and a preparation method thereof.
Background
High-entropy alloys (HEAs) have a range of excellent mechanical properties, different from conventional crystalline alloys, with high strength, high hardness, low elastic modulus, and large elastic strain limit, making them considered as extremely potential structural materials. However, the magnetic properties, especially the soft magnetic properties, of the high-entropy alloy are not effectively researched and developed, and the practical engineering application of the functional high-entropy alloy is severely restricted. Therefore, how to utilize the magnetic insulation effect to improve the magnetic saturation strength of the high-entropy alloy and reduce the iron loss, and prepare the high-entropy alloy powder material with excellent soft magnetic performance is a hot spot problem for further research of the high-entropy alloy. The resistivity of the electrical pure iron is lower, and the resistivity of Fe-Si, fe-Al, fe-Ni and Fe-Co soft magnetic alloy is generally higher than that of the pure iron by several times, and the Fe-16% Al alloy reaches 150uΩ cm. The resistivity of the amorphous alloy is generally above 100uΩ cm, which is obviously higher than that of the general crystalline alloy. The magnetic powder core is mixed with dielectric medium with good insulativity, alloy powder is coated as far as possible, isolation is realized, and the volume resistivity is remarkably improved. The Fe-Co-Ni-based high-entropy alloy (FeCoNi-HEA) has good soft magnetic performance and mechanical property, and can obtain the balance relation between the optimal soft magnetic performance and the iron loss performance through the content regulation and control of alloy elements, thereby being expected to become a potential magnetic functional material.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-entropy soft magnetic material with a core-shell structure generated by autoxidation and a preparation method thereof.
In order to solve the technical problems, the invention provides a high-entropy soft magnetic material with a core-shell structure formed by autoxidation, which is a powder material formed by taking soft magnetic nano iron cobalt nickel principal element high-entropy alloy as a core and taking rare earth cerium autoxidized CeO 2 as a shell to form an autoxidized CeO 2 coated nano high-entropy alloy magnetic crystal.
Preferably, the soft magnetic nanometer iron cobalt nickel principal element high entropy alloy component is (FeCoNi) XAyBz, the FeCoNi content x is more than or equal to 0.8, the elements A and B are one of Cu, mn, al, cr, si, and y+z is less than or equal to 0.2; wherein the content of each element is the mole ratio.
Preferably, the soft magnetic nano iron cobalt nickel principal element high-entropy alloy is alloy nano powder obtained after vacuum high-energy ball milling.
Preferably, the purity of raw material powder adopted by the soft magnetic nano iron-cobalt-nickel principal component high-entropy alloy is more than 99.99 percent, and the granularity is less than or equal to 45 mu m.
Preferably, the size of the soft magnetic nanometer iron-cobalt-nickel principal component high-entropy alloy is 80-150nm, and the thickness of a CeO 2 shell layer is 3-8nm.
The invention also provides a preparation method of the high-entropy soft magnetic material with the self-oxidation core-shell structure, which comprises the following steps:
selecting raw materials Al, fe, cr, co, ni, cu, mn, si, and preparing according to the alloy system;
According to the designed alloy system, placing the weighed pure metal powder in proportion into a vacuum stainless steel ball grinding tank, vacuumizing, and filling high-purity argon shielding gas; opening the ball mill to mechanically alloy, wherein the dry grinding time is not less than 40 hours; adding cerium powder and absolute ethyl alcohol for wet grinding for not less than 5 hours, wherein the process is completed under the vacuum of a glove box;
opening a vacuum ball milling tank in a glove box, fully drying, and filling argon-oxygen mixed gas with the volume ratio of 200:1 to complete cerium powder autoxidation, thereby obtaining the nano soft magnetic high-entropy alloy magnetic crystal powder material of a core-shell structure (FeCoNi) XAyBz system formed by cerium autoxidation.
Preferably, the feedstock Al, fe, cr, co, ni, cu, mn, si metal powder has a purity of >99.9% and a particle size of 45 μm or less.
Preferably, the dry grinding rotating speed is 300-500r/min, and the dry grinding time is 40-50h.
Preferably, the wet milling time is 5-10h, and the wet milling rotating speed is 300r/min.
Preferably, the vacuum drying is carried out for 24-36 hours.
The invention has the beneficial effects that:
The high-entropy alloy soft magnetic material is prepared by component design and a preparation process, and the high-entropy alloy obtained by high-energy ball milling is nano or superfine magnetic crystals; the non-magnetic metal oxide core-shell structure powder prepared by the metal cerium self-oxidation method has the advantages of short flow, easy operation, easy control of shell thickness and uniformity and the like. The CeO 2 magnetic insulating layer isolates the direct contact of metal, the resistance between magnetic crystals is improved, and the iron loss and eddy current loss of the soft magnetic material in application can be reduced.
Drawings
FIG. 1 is an SEM morphology of a high entropy alloy powder without cerium added;
FIG. 2 is a TEM analysis of the auto-oxidized high-entropy alloy magnetic powder material of example 1;
FIG. 3 is a graph comparing the high entropy alloy VSM with cerium-doped and cerium-free auto-oxidized high entropy alloy powder of example 1.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Selecting raw materials: weighing metal powder such as Fe, co, ni, al, mn with purity of 99.99%, and the granularity is less than or equal to 45 μm.
Example 1
(1) Preparing composite powder: mechanically alloying the prepared powder (with the subscript of mole ratio) in a high-energy ball mill, wherein the dry grinding rotating speed is 400r/min, the wet grinding time is 5h after the dry grinding is 40h, and the wet grinding rotating speed is 300r/min, so as to prepare the high-entropy alloy (CoFeNi) 0.8Mn0.1Al0.1 powder. The method comprises the following specific steps:
a) And placing the powder to be ball-milled into a stainless steel milling tank, and ball-milling by taking stainless steel balls as milling bodies according to the ball powder mass ratio of not less than 10:1. Before ball milling, vacuumizing for 3min by using a vacuum machine, and then filling argon with the pressure of 0.5MPa as a protective gas; the rotation speed of the ball mill is 400r/min, and the rotation direction needs to be adjusted every 60 min.
B) Absolute ethanol was added to the powder ball milled for 45h for wet milling for 5h. After ball milling is finished, the ball milling tank is taken out, the vacuum drying oven is opened, then the tank cover of the ball milling tank is opened, a certain gap is reserved, and the ball milling tank is put into the drying oven and then the oven door is closed. And (5) vacuumizing by a vacuum machine, regulating the temperature to 50 ℃, drying for 24 hours, and taking out. And (3) putting the dried powder into a ball mill, ball-milling for 2 hours (dry milling) at a rotating speed of 150r/min, sieving the obtained high-entropy alloy composite powder, and taking out for later use, wherein the SEM morphology is shown in figure 1.
C) The operation was completed in a vacuum inert gas glove box. Placing the weighed metal powder of the alloy system into a stainless steel vacuum grinding tank, vacuumizing, filling high-purity argon shielding gas, performing mechanical alloying in a high-energy ball mill, wherein the dry grinding speed is 300-500 r/min, the dry grinding time is 40-50 h, adding cerium powder and absolute ethyl alcohol, and the wet grinding time is 5-10h, wherein the wet grinding speed is 300r/min; after wet grinding, vacuum drying is carried out for 24-36 h;
d) Preparing core-shell magnetic powder: and (3) in a vacuum inert gas glove box, opening the high-entropy alloy powder vacuum ball milling tank obtained in the step (2), and filling argon-oxygen mixed gas with the volume ratio of 200:1 to complete cerium powder self-oxidation and generate the high-entropy soft magnetic material with the core-shell structure.
(2) And (3) structural and performance characterization, wherein equipment such as TEM, VSM and the like is adopted to test the sample. TEM analysis in FIG. 2 shows that the dark high-entropy alloy particles are wrapped by an oxide layer, and a metal oxide shell layer is formed on the surface of the high-entropy alloy powder; FIG. 3 is a graph showing magnetic properties before and after coating, and comparing the two curves, it can be seen that the saturation induction intensity of the high-entropy alloy of the CeO layer introduced is reduced from 133emu/g to 118emu/g, the coercive force of the CeO layer and the CeO layer is not obviously reduced due to the introduction of cerium oxide, and the coercive force of the CeO layer and the CeO layer is 16Oe; the resistivity of the block material after pressing was increased from 0.48X10 -6. OMEGA.m to 475. OMEGA.m before coating.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. A high-entropy soft magnetic material with a core-shell structure is formed by autoxidation, which is characterized in that soft magnetic nano iron cobalt nickel principal element high-entropy alloy is taken as a core, rare earth cerium autoxidized CeO 2 is taken as a shell, and an autoxidized CeO 2 coated nano high-entropy alloy magnetic crystal powder material is formed; the soft magnetic nanometer iron cobalt nickel principal element high entropy alloy comprises (FeCoNi) XAyBz, wherein the FeCoNi content x is more than or equal to 0.8, the elements A and B are one of Cu, mn, al, cr, si, and y+z is less than or equal to 0.2; wherein the content of each element is the mole ratio;
The preparation method of the high-entropy soft magnetic material with the self-oxidation core-shell structure comprises the following steps:
selecting one or two of raw materials of Fe, co, ni and Al, cr, cu, mn, si for combination, and preparing according to alloy components;
According to the designed alloy components, placing the weighed pure metal powder in proportion into a vacuum stainless steel ball grinding tank, vacuumizing, and filling high-purity argon shielding gas; opening the ball mill to mechanically alloy, wherein the dry grinding time is not less than 40 hours; adding cerium powder and absolute ethyl alcohol for wet grinding for at least 5 hours, and performing vacuum drying after wet grinding, wherein the process is completed under the vacuum of a glove box;
opening a vacuum ball milling tank in a glove box, fully drying, and filling argon-oxygen mixed gas with the volume ratio of 200:1 to finish the self-oxidation of cerium powder, thereby obtaining the powder material of the self-oxidized cerium oxide coated nano high-entropy alloy magnetic crystal.
2. The high-entropy soft magnetic material with the self-oxidation core-shell structure according to claim 1, wherein the purity of raw material powder adopted by the soft magnetic nano iron cobalt nickel principal element high-entropy alloy is more than 99.99%, and the granularity is less than or equal to 45 mu m.
3. The high-entropy soft magnetic material with the self-oxidation core-shell structure according to claim 1, wherein the size of the soft magnetic nano iron cobalt nickel principal element high-entropy alloy is 80-150nm, and the thickness of a CeO 2 shell layer is 3-8nm.
4. The high-entropy soft magnetic material with the self-oxidation core-shell structure according to claim 1, wherein the dry grinding rotating speed is 300-500r/min, and the dry grinding time is 40-50h.
5. The high-entropy soft magnetic material with the self-oxidation core-shell structure according to claim 1, wherein the wet milling time is 5-10h, and the wet milling rotating speed is 300r/min.
6. The high entropy soft magnetic material of claim 1, wherein the vacuum dries for 24-36 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180551.2A CN112542285B (en) | 2020-10-29 | 2020-10-29 | High-entropy soft magnetic material with self-oxidation core-shell structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180551.2A CN112542285B (en) | 2020-10-29 | 2020-10-29 | High-entropy soft magnetic material with self-oxidation core-shell structure and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112542285A CN112542285A (en) | 2021-03-23 |
| CN112542285B true CN112542285B (en) | 2024-04-19 |
Family
ID=75014920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011180551.2A Active CN112542285B (en) | 2020-10-29 | 2020-10-29 | High-entropy soft magnetic material with self-oxidation core-shell structure and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112542285B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113652616B (en) * | 2021-07-01 | 2022-08-09 | 中国电子科技集团公司第九研究所 | High-performance soft magnetic amorphous coating and preparation method thereof |
| CN115505812B (en) * | 2022-09-16 | 2023-07-28 | 华东理工大学 | Soft magnetic medium-entropy alloy and preparation method and application thereof |
| CN116180124B (en) * | 2023-03-22 | 2023-12-12 | 哈尔滨工业大学 | Preparation method and application of high-entropy alloy electrocatalytic electrode with core-shell structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140100347A (en) * | 2013-02-06 | 2014-08-14 | 건국대학교 산학협력단 | Metal-ceramic core-shell structured magnetic materials powder prepared by gas phase process and the preparation method thereof |
| CN110373596A (en) * | 2019-07-08 | 2019-10-25 | 南京工程学院 | A kind of soft magnetism high entropy alloy material of island magnetocrystalline structure and preparation method thereof |
-
2020
- 2020-10-29 CN CN202011180551.2A patent/CN112542285B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140100347A (en) * | 2013-02-06 | 2014-08-14 | 건국대학교 산학협력단 | Metal-ceramic core-shell structured magnetic materials powder prepared by gas phase process and the preparation method thereof |
| CN110373596A (en) * | 2019-07-08 | 2019-10-25 | 南京工程学院 | A kind of soft magnetism high entropy alloy material of island magnetocrystalline structure and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| CeO_2对AlCoCrFeMn高熵合金组织与性能的影响;王志新;赵量;周家臣;马明星;;热加工工艺;20200430;第49卷(第08期);37-40页 * |
| Microstructure and Properties of Al0.4FeCrNiCo1.5Ti0.3 High Entropy Alloy Prepared by MA-HP Technique;Yang Shaofeng等;《Rare Metal Materials and Engineering》;20141231;第43卷(第12期);2948-2952页 * |
| Microstructure and properties of CeO2-doped CoCrFeMnNi high entropy alloy fabricated by laser mental deposition;Roman Savinov等;《Journal of Manifacturing Processes》;20200420;1245-1251页 * |
| 高熵合金及其他高熵材料研究新进展;王晓鹏等;《航空材料学报》;20191129;第39卷(第6期);1-19页 * |
| 高熵合金的研究进展及发展趋势;周航等;《热加工工艺》;20180930;第47卷(第18期);5-9页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112542285A (en) | 2021-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112542285B (en) | High-entropy soft magnetic material with self-oxidation core-shell structure and preparation method thereof | |
| KR101060091B1 (en) | Method of manufacturing magnetic core and induction element with magnetic core and magnetic core | |
| CN110373596B (en) | Soft magnetic high-entropy alloy material with island-shaped magnetic crystal structure and preparation method thereof | |
| CN100486738C (en) | Manufacturing method of Fe-6.5Si alloy powder and manufacturing method of magnetic powder core | |
| CN104087833B (en) | Fe-based nanocrystalline magnetically soft alloy that high frequency performance is excellent and preparation method thereof | |
| AU2020103177A4 (en) | Method For Preparing FeSiBCr/SiO2 Nanocrystalline Soft Magnetic Composite Iron Core | |
| JP5305126B2 (en) | Soft magnetic powder, method of manufacturing a dust core, dust core, and magnetic component | |
| JP2008028162A (en) | Soft magnetic material, manufacturing method therefor, and dust core | |
| CN101246773A (en) | High-efficiency soft magnetic material and method for producing the same | |
| CN102136331A (en) | High-efficiency soft magnetic composite material and preparation method thereof | |
| CN101145420A (en) | Fe based large block amorphous nano-crystal magnetic element preparation method | |
| Zhu et al. | Highly efficient inorganic-coated FeSiAl/biotite soft magnetic composites | |
| CN110670001A (en) | Preparation method of silicon-rich P-containing iron-based amorphous nanocrystalline alloy and iron-based amorphous alloy nanocrystalline magnetic core | |
| CN111230127A (en) | Preparation method of composite magnetic powder | |
| WO2021218700A1 (en) | Neodymium-iron-boron magnet material, raw material composition, preparation method therefor and use thereof | |
| CN107829036B (en) | Powder hot-pressing sintering manufacturing method of high-silicon steel thin strip | |
| CN113593873A (en) | High-coercivity mixed rare earth permanent magnet material and preparation method thereof | |
| CN109175384A (en) | A kind of preparation method of flake micron grade iron aluminum silicon powder | |
| WO2024077966A1 (en) | Core-shell structure r-t-b rare earth permanent magnet having gd-rich core for use in high-temperature environment and preparation method therefor | |
| CN104036903B (en) | A kind of preparation method of ferrum tantnickel powder core | |
| CN105256260B (en) | Method for improving intensity of aluminum-based amorphous alloy | |
| CN101691637A (en) | Mo-doped FeCo-based soft magnetic alloy | |
| Lv et al. | Coercivity enhancement in Dy-free HDDR Nd-Fe-B powders by the grain boundary diffusion of Zn | |
| CN108511143A (en) | A kind of high-performance electromagnet | |
| CN109243745B (en) | High-temperature-resistant corrosion-resistant monocrystalline magnetic powder and preparation method and application thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |