CN113024236A - Lanthanum-copper doped sintered permanent magnetic ferrite material and magnet prepared from same - Google Patents
Lanthanum-copper doped sintered permanent magnetic ferrite material and magnet prepared from same Download PDFInfo
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- CN113024236A CN113024236A CN202110244930.1A CN202110244930A CN113024236A CN 113024236 A CN113024236 A CN 113024236A CN 202110244930 A CN202110244930 A CN 202110244930A CN 113024236 A CN113024236 A CN 113024236A
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- lanthanum
- sintered permanent
- ferrite material
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- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 title claims abstract description 38
- FQVNUZAZHHOJOH-UHFFFAOYSA-N copper lanthanum Chemical compound [Cu].[La] FQVNUZAZHHOJOH-UHFFFAOYSA-N 0.000 title claims description 14
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 9
- 230000004907 flux Effects 0.000 claims abstract description 7
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims abstract description 3
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 11
- 238000000465 moulding Methods 0.000 description 9
- 238000005245 sintering Methods 0.000 description 9
- 238000010304 firing Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 239000011575 calcium Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910000018 strontium carbonate Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910002402 SrFe12O19 Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
- C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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Abstract
The invention discloses a lanthanum-copper-doped sintered permanent magnetic ferrite material and a magnet prepared from the same, wherein the sintered permanent magnetic ferrite material takes M-type Sr ferrite with a hexagonal structure as a main phase; 0.05 to 1.2 mass% of CuO, and Fe2O387 to 90 mass% of SrO 9 to 10 mass% and La2O3The content of the rare earth oxide in the alloy is 0.1-2.4 mass%; when the content of the rare earth element is expressed in terms of mol as M1 and the content of Cu is expressed in terms of mol as M2, M1/M2 is 0.5 or more. The invention has high residual magnetic flux density Br and intrinsic coercive force HcJ and low cost.
Description
Technical Field
The invention relates to the field of sintered permanent magnetic ferrite materials, in particular to a lanthanum-copper-doped sintered permanent magnetic ferrite material and a magnet prepared from the same.
Background
As magnetic materials used for sintering permanent magnetic ferrite materials, Ba ferrite, Sr ferrite, and Ca ferrite having a hexagonal crystal structure are known. In recent years, as a magnet material for a motor or the like, a magnetoplumbite-type (M-type) Sr ferrite has been mainly used. M-type ferrites, for example from AFe12O19Is represented by the general formula (II). The Sr ferrite has Sr at the a site of the crystal structure.
As such an M-type Sr ferrite, a material containing Ca and Si as components is widely used. In such Sr ferrite, the remanence (Br) tends to be increased but the squareness ratio (Hk/HcJ) tends to be decreased if Ca is increased, and the squareness ratio (Hk/HcJ) tends to be improved but the remanence (Br) tends to be decreased if Si is increased, and the obtained magnetic characteristics are naturally limited, and therefore, attempts have been made to improve the magnetic characteristics.
For example, patent document No. CN101013622A discloses a technique for improving magnetic properties by replacing a part of a site and B site with a specific amount of a rare earth element and Co. However, the above-described technique requires the use of a component more expensive than the raw material mainly composed of Fe, Sr, or the like, and has a problem that the cost of the raw material increases as compared with the conventional Sr ferrite. For example, components such as La (rare earth element) and Co have been increasing in price in recent years, and are significantly more expensive than raw materials mainly containing Fe, Sr, or the like.
As a technique for improving the magnetic properties, patent documents CN104900362A and CN102898129A have been doped with Zn instead of Co in the Sr ferrite to improve the performance and reduce the cost, and combined substitution with La — Zn can significantly improve the remanence but has a large influence on the coercive force of the magnet.
Patent document CN1988066A proposes that the combined doping of La-Cu is used to obtain low-cost high-performance permanent magnetic ferrite magnetic powder, which is chemically synthesized by self-propagating sintering method, and is difficult to be industrialized.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide a sintered permanent magnetic ferrite material having a high residual magnetic flux density (Br) and a low cost, and a magnet produced therefrom.
The gist of the present invention for solving such a problem is as follows.
A lanthanum-copper-doped sintered permanent magnetic ferrite material is a ferrite material which takes M type Sr ferrite with a hexagonal structure as a main phase; 0.05 to 1.2 mass% of CuO, and Fe2O387 to 90 mass% of SrO 9 to 10 mass% and La2O3The content of the rare earth oxide in the alloy is 0.1-2.4 mass%; when the content of the rare earth element is expressed in terms of mol as M1 and the content of Cu is expressed in terms of mol as M2, M1/M2 is 0.5 or more.
Preferably, the lanthanum-copper doped sintered permanent magnetic ferrite material comprises the following components in percentage by mass: na (Na)2O is not more than 0.1 mass%, and Al2O3Not more than 0.5 mass%, SiO2Not more than 1.0 mass%, P2O5Not more than 0.5 mass%, K2O is less than or equal to 0.1 mass percent, CaO is less than or equal to 0.5 mass percent, and TiO2Not more than 0.1% by mass, Cr2O3Less than or equal to 0.5 percent by mass, less than or equal to 0.5 percent by mass of MnO, less than or equal to 0.5 percent by mass of BaO, and less than or equal to 0.5 percent by mass of Cl.
Preferably, the average particle size of the Sr ferrite fine powder is 0.6 μm to 1.0 μm.
Preferably, the residual magnetic flux density Br of the lanthanum-copper-doped sintered permanent magnetic ferrite material is more than 420mT, and the intrinsic coercive force HcJ is more than 240 kA/m.
A magnet is prepared by adopting the lanthanum-copper doped sintered permanent magnetic ferrite material.
According to the present invention, a sintered permanent magnetic ferrite material having a high remanence (Br) and a high intrinsic coercivity (HcJ) can be obtained.
Detailed Description
The technical solutions in the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The lanthanum-copper doped sintered permanent magnetic ferrite material and the magnet prepared therefrom provided by the present invention are described in detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
In the lanthanum-copper doped sintered permanent magnetic ferrite material provided by the invention, M-type Sr ferrite with a hexagonal crystal structure is used as a main phase.
Such an M-type Sr ferrite can be represented by, for example, the following formula (1).
SrFe12O19 (1)
In the M-type Sr ferrite of formula (1), Sr at the a-site and Fe at the B-site may be partially replaced with impurities or intentionally added elements.
Such an M-type Sr ferrite can be represented by, for example, the following general formula (2).
RxSr1-x(Fe12-yMy)zO19 (2)
In the above formula (2), x and y are, for example, 0.01 to 0.5, and z is, for example, 0.7 to 1.2. In addition, M in the formula (2) may include, for example, 1 or more elements selected from Cu (copper), Zn (zinc), Co (cobalt), Ni (nickel), Mn (manganese), Al (aluminum), and Cr (chromium). R in the formula (2) is a rare earth element, and examples thereof include 1 or more elements selected from La (lanthanum), Ce (cerium), Pr (praseodymium), Nd (neodymium), and Sm (samarium).
In addition, the ratio of the a site and the B site in the above formulas (1) and (2) or the ratio of oxygen (O) actually shows a value slightly deviating from the above range, and therefore, may be slightly deviating from the above numerical value.
Preferably, the M-type Sr ferrite in the lanthanum-copper-doped sintered permanent magnetic ferrite material is represented by the above formula (2), and M contains at least Cu (copper). More preferably, R is La.
In addition, the lanthanum-copper-doped sintered permanent magnetic ferrite material contains a component different from the M-type Sr ferrite as a sub-component. As the subcomponent, a component existing as a grain boundary component or a heterogeneous phase can be cited. Examples of such a component include an oxide, and specifically, examples of the constituent element include an oxide and a composite oxide containing at least one element selected from R (rare earth element), Na (sodium), Si (silicon), Ca (calcium), Sr (strontium), Ba (barium), Fe (iron), Co (cobalt), Mn (manganese), Cu (copper), Zn (zinc), Cr (chromium), and Al (aluminum). Examples of such an oxide include SiO2、Na2O、CaO、La2O3、CuO、ZnO、Fe2O3MnO, etc. In addition, silicate glass may be contained.
The preparation method of the lanthanum-copper doped sintered permanent magnetic ferrite material provided by the invention comprises a material mixing process, a pre-sintering process, a crushing process, a molding process in a magnetic field and a sintering process. The respective steps are described in detail below.
The mixing step is a step of preparing a mixed powder for pre-firing. In the mixing step, the starting materials are first weighed and mixed at a predetermined ratio, and then mixed and pulverized with a dry mixer, a wet ball mill, or the like for about 1 to 2 hours. In the mixing step, SiO may be added2、CaCO3、Na2CO3And oxides containing rare earth elements as constituent elements (e.g., La)2O3) And powders such as CuO, and the compound having Cu as a constituent element is not limited to oxides.
The calcination step is a step of calcining the raw material composition obtained in the mixing step. The calcination may be performed in an oxidizing atmosphere such as air. The pre-sintering temperature is preferably 1200-1300 ℃, and the pre-sintering time at the pre-sintering temperature is preferably 1-3 hours.
The grinding step is a step of obtaining ferrite magnet powder by grinding the calcined material. The pulverization step may be performed in one stage or may be performed in two stages, i.e., a coarse pulverization step and a fine pulverization step. Since the calcined material is usually in the form of granules or blocks, it is preferable to first perform a coarse grinding step. In the coarse grinding step, the powder is ground in a dry manner using a vibrating rod mill, a dry ball mill or the like, thereby preparing a ground powder having an average particle diameter of 3.0 to 6.0. mu.m. The pulverized powder thus prepared is pulverized in a wet manner by a wet ball mill, a vertical mill or the like to obtain a fine powder having an average particle diameter of 0.6 to 0.8 μm.
In the pulverizing step except SiO2、Na2CO3And powder of CuO, CaCO may be added3、SrCO3、BaCO3And oxides containing rare earth elements as constituent elements (e.g., La)2O3) And the like. By adding such a component, sinterability can be improved and magnetic properties can be improved. In addition, since these components may flow out together with the solvent of the slurry in the case of wet molding, it is preferable to blend more than the target content in the sintered permanent magnetic ferrite material.
The in-magnetic-field forming step is a step of forming the fine powder obtained in the pulverizing step in a magnetic field to produce a formed body. The molding step in the magnetic field may be performed by either dry molding or wet molding. From the viewpoint of improving the degree of magnetic orientation, wet molding is preferred. The molding pressure is, for example, 0.3 to 0.5 ton/cm2The applied magnetic field is, for example, 8 to 15 kOe.
The firing step is a step of firing the molded body to obtain a sintered body. The firing step is usually performed in an oxidizing atmosphere such as air. The firing temperature is preferably 1200-1250 ℃. The firing time at the firing temperature is 1.0 to 2.0 hours. The sintered permanent magnetic ferrite material as the sintered body can be obtained by the above-described steps.
In order to more clearly show the technical solutions and the technical effects provided by the present invention, the lanthanum-copper doped sintered permanent magnetic ferrite material and the magnet prepared therefrom provided by the present invention are described in detail with specific embodiments below.
First, the following starting materials were prepared:
·Fe2O3powder (primary particle size: 0.8 μm)
·SrCO3Powder (a)Secondary particle size: 2.0 μm)
·SiO2Powder (primary particle size: 1.2 μm)
·CaCO3Powder of
CuO powder
·La2O3Powder of
Example 1
Crushing and mixing 1000g of Fe with a dry high-speed mill2O3Powder, 161g of SrCO3Powder and 3.5g of SiO2Powdering and granulating. The powder thus obtained was calcined in air at 1260 ℃ for 2 hours to obtain a granulated calcined substance. The calcined material was coarsely pulverized by a dry pulverizer to obtain a coarse powder having an average particle size of 3 μm.
A predetermined amount of SiO was added to 300g of the coarse powder2Powder, CaCO3Powder, La2O3The powder and CuO powder were wet-pulverized for 12 hours by a ball mill to obtain a slurry. The molded article was obtained by molding in an applied magnetic field of 14kOe using a wet magnetic field molding machine. 3 such molded articles were produced. These molded bodies were fired in air at 1210 ℃, 1225 ℃ and 1240 ℃ for 2 hours, respectively, to obtain 3 kinds of cylindrical sintered permanent magnetic ferrite materials having different firing temperatures.
Examples 2 to 9 and comparative examples 1 to 3 having different compositions from example 1 were prepared in the same manner as in example 1 except that the amount of powder added was changed, and magnetic properties were measured to obtain the following table 1:
TABLE 1
As can be seen from table 1 above: the examples 1 to 3 of the present invention have the best magnetic performance, and compared with the comparative examples 1 to 3, the remanence Br is significantly increased without the intrinsic coercivity HcJ being significantly decreased, and the remanence Br is decreased after the doping ratio is increased in the subsequent examples 4 to 9.
Undoped ferrite, the residual magnetic flux density Br increases monotonically with sintering temperature; after La-Cu doping, the optimal sintering temperature is 1225 ℃, and the residual magnetic flux density Br is reduced above or below the temperature.
The embodiment of the invention has the characteristics of low cost, simple process and easy industrial production, and the lanthanum-copper doped sintered permanent magnetic ferrite material prepared by the method has excellent magnetic property.
In summary, the remanent magnetic flux density Br and intrinsic coercivity HcJ of the embodiments of the present invention are high and low in cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A lanthanum-copper-doped sintered permanent magnetic ferrite material is characterized in that the lanthanum-copper-doped sintered permanent magnetic ferrite material is a sintered permanent magnetic ferrite material with M type Sr ferrite having a hexagonal structure as a main phase;
the CuO content is 0.05 to 1.2 mass%,
Fe2O3the content is 87 to 90 mass%,
the SrO content is 9-10% by mass,
comprising La2O3The content of the rare earth oxide in the alloy is 0.1-2.4 mass%;
when the content of the rare earth element is expressed in terms of mol as M1 and the content of Cu is expressed in terms of mol as M2, M1/M2 is 0.5 or more.
2. The lanthanum copper doped sintered permanent magnetic ferrite material according to claim 1, characterized in that the lanthanum copper doped sintered permanent magnetic ferrite material comprises the following components in percentage by mass:
Na2o is less than or equal to 0.1 mass percent,
Al2O3less than or equal to 0.5 percent by mass,
SiO2less than or equal to 1.0 percent by mass,
P2O5less than or equal to 0.5 percent by mass,
K2o is less than or equal to 0.1 mass percent,
CaO is less than or equal to 0.5 mass percent,
TiO2less than or equal to 0.1 percent by mass,
Cr2O3less than or equal to 0.5 percent by mass,
MnO is less than or equal to 0.5 mass percent,
BaO is less than or equal to 0.5 percent by mass,
cl is less than or equal to 0.5 mass percent.
3. The lanthanum copper doped sintered permanent magnetic ferrite material according to claim 1 or 2, characterized in that the Sr ferrite has an average grain size of 0.6 μ ι η to 1.0 μ ι η.
4. The lanthanum-copper doped sintered permanent magnetic ferrite material according to claim 1 or 2, characterized in that the remanent magnetic flux density Br is above 420mT and the intrinsic coercivity HcJ is above 240 kA/m.
5. A magnet, characterized in that it is prepared from a lanthanum copper doped sintered permanent magnetic ferrite material according to any of the preceding claims 1 to 4.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11224812A (en) * | 1997-09-19 | 1999-08-17 | Tdk Corp | Magnet powder, sintered magnet, their manufacture, bonded magnet, and magnetic record medium |
| JP2002334803A (en) * | 2001-05-08 | 2002-11-22 | Sumitomo Special Metals Co Ltd | Permanent magnet and manufacturing method therefor |
| WO2014087932A1 (en) * | 2012-12-03 | 2014-06-12 | Tdk株式会社 | METHOD FOR PRODUCING Sr FERRITE SINTERED MAGNET |
| CN104900362A (en) * | 2014-03-07 | 2015-09-09 | Tdk株式会社 | Sintered ferrite magnet and motor provided therewith |
-
2021
- 2021-03-05 CN CN202110244930.1A patent/CN113024236A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11224812A (en) * | 1997-09-19 | 1999-08-17 | Tdk Corp | Magnet powder, sintered magnet, their manufacture, bonded magnet, and magnetic record medium |
| JP2002334803A (en) * | 2001-05-08 | 2002-11-22 | Sumitomo Special Metals Co Ltd | Permanent magnet and manufacturing method therefor |
| WO2014087932A1 (en) * | 2012-12-03 | 2014-06-12 | Tdk株式会社 | METHOD FOR PRODUCING Sr FERRITE SINTERED MAGNET |
| CN104900362A (en) * | 2014-03-07 | 2015-09-09 | Tdk株式会社 | Sintered ferrite magnet and motor provided therewith |
Non-Patent Citations (3)
| Title |
|---|
| AILIN XIA 等: "M-type SrFe12O19 ferrites obtained by using cubic or spindle-like a-Fe2O3 as Fe sources: A comparative study", 《M-TYPE SRFE12O19 FERRITES OBTAINED BY USING CUBIC OR SPINDLE-LIKE A-FE2O3 AS FE SOURCES: A COMPARATIVE STUDY》 * |
| KYOUNG-SEOK MOON等: "Effect of Ca and La substitution on the structure and magnetic properties of M-type Sr-hexaferrites", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
| 钉宫公一等: "电子陶瓷材料", 《陶瓷研究与职业教育》 * |
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