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CN103172360A - Plumbite type yttrium permanent magnetic ferrite material and preparation method thereof - Google Patents

Plumbite type yttrium permanent magnetic ferrite material and preparation method thereof Download PDF

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CN103172360A
CN103172360A CN2013100000539A CN201310000053A CN103172360A CN 103172360 A CN103172360 A CN 103172360A CN 2013100000539 A CN2013100000539 A CN 2013100000539A CN 201310000053 A CN201310000053 A CN 201310000053A CN 103172360 A CN103172360 A CN 103172360A
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高尚
刘先松
金大利
冯双久
张战军
黄风
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Anhui University
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Anhui University
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Abstract

The invention discloses a plumbite type yttrium permanent magnetic ferrite material and a preparation method thereof. The plumbite type yttrium permanent magnetic ferrite material is a hexagonal system, the chemical structural formula of which is R1-x-yYxLayO.nFe(12-z)/nCoz/nO3, wherein x is less than or equal to 0.5 but greater than or equal to 0.01, y is less than or equal to 0.75 but greater than or equal to 0.1, z is less than or equal to 0.082 but greater than or equal to 0.07, n is less than or equal to 6.5 but greater than or equal to 5.0, and (1-x-y) is less than or equal to 0.5 but greater than or equal to 0. R is Ca, Ba, Sr or one, two and three of Ce, Pr and Nd and Sm in lanthanide series exclusive of La. Compared with the conventional permanent magnetic ferrite, for the plumbite type yttrium permanent magnetic ferrite material, at the sintering temperature of 1150-1300 DEG C, the remanence Br value reaches 4.2-4.8kGs, the magnetic induction coercive force Hcb value reaches 4.2-5.2kOe, the intrinsic coercive force Hcj value reaches 4.5-6.0kOe, and the magnetic energy product value reaches 5.2-5.7MGOe. The plumbite type yttrium permanent magnetic ferrite material provided by the invention is high in remanence and intrinsic coercive force. When the sintered magnet becomes smaller and thinner, the high residual magnetic flux density is still maintained.

Description

A kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof
Technical field
The present invention relates to a kind of Magnetoplumbate-type permanent magnetic ferrite material and preparation method thereof, refer more particularly to a kind of novel Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof.
Background technology
Ferrite sintered body magnet and bonded permanent magnet are widely used in the every field of social life at present.As be applied to the starter motor of motorcycle, automobile, power window, ABS, fan etc.And ferrite permanent-magnet materials is widely used in audio frequency, video reproducing especially, the drive-motor of office automation, sound equipment and video recorder etc. etc.; In addition, ferrite permanent-magnet materials also can be used for washing machine, microwave oven, the household appliances and electric tools such as refrigerator etc.; The particularly important is, than other permanent magnet materials such as Nd-Fe-B permanent magnet, samarium cobalt permanent magnet body equimagnetic material has excellent cost performance.Have indispensable vital role therefore explore the ferrite permanent-magnet materials of research and development novel high-performance to improving the daily life level, be all one of emphasis of magneticsubstance research field all the time.
Traditional a few class Ferrite Materials have following a few class:
The first kind: the Ba of hexagonal structure or Sr ferrite, use AFe 12O 19Expression.Normally Ba or Sr in the A position, perhaps two kinds all have.Add additive A l 2O 3, Cr 2O 3, B 2O 3, SiO 2, CaCO 3Deng, magnetic parameter is adjusted, but total amount is no more than AFe 12O 191.5wt%.
Equations of The Second Kind: Sr (Ba) 1-xR xFe 12-yCo yO 19(atomic ratio) type ferrite.Wherein, element R is the pardon rare earth element of a kind of Y at least, and must comprise La in element R.X, y satisfy respectively following condition: 0＜x≤0.5,0.01≤y≤1.0.Add additive A l 2O 3, Cr 2O 3, B 2O 3, SiO 2, CaCO 3Deng, magnetic parameter is adjusted, but total amount is no more than Sr (Ba) 1-xR xFe 12-yCo yO 191.5wt%.
The 3rd class: by authorizing patent of invention (ZL200910251673.3) new calcium permanent-magnet ferrite, its chemical structural formula is R 1-x-yCa xLa yNFe 2-zCo z/nO 3, wherein, 0.01≤x≤0.4,0.1≤y≤0.75,0.07≤z≤0.82,5.0≤n≤6.5,0≤1-x-y≤0.5, R be in Ca, Ba, Sr or Ce, the Pr that does not comprise the group of the lanthanides of La and Nd and Sm a kind of, two kinds and three kinds; When R is Ba and Sr, the content of Ba and Sr≤0.2.Add additive A l 2O 3, Cr 2O 3, B 2O 3, SiO 2, CaCO 3Deng, magnetic parameter is adjusted, but total amount is no more than Sr (Ba) 1-xR xFe 12-yCo yO 191.5wt%.
Above first and second class is commonly referred to as Ba or Sr ferrite or part ion replaces (displacement) barium ferrite, strontium ferrites, and its shortcoming is all to be prepared into ferrite device can not be in sintering temperature≤1150 ℃ the time, and Br is difficult to reach 4.2～4.75kGs, H cjBe difficult to reach 4.5～5.0kOe.The 3rd class is called calcium based permanent magnet oxysome, is characterized in that calcium becomes the main occupy-place ion in A position, has made up the low shortcoming of the ferritic magnetic property of first and second class.
Summary of the invention
The invention provides a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof, a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite of the present invention has high remanent magnetism and HCJ, when sintered magnet diminishes, after attenuation, still can keep high residual flux density.
Technical scheme of the present invention is:
A kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof, it is characterized in that: preparation technology comprises the following steps:
(1) batch mixing: press chemical structural formula R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Composition requirement, will with contained component corresponding oxidation raw material, as La 2O 3, Y 2O 3, Fe 2O 3, Co 3O 4(or Co 2O 3), and carbonate, as CaCO 3, SrCO 3And BaCO 3Raw material powder mix after, with water, steel ball according to: material: water: ball=proportioning was mixed in 1: 1: 8; Subsequently, add additive A l 2O 3, Cr 2O 3, B 2O 3And SiO 2, its each component is added weight and is accounted for R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Structural weight per-cent is respectively 0.1%≤Al 2O 3≤ 2.0%, 0.1%≤Cr 2O 3≤ 2.0%, 0≤B 2O 3≤ 1.5%, 0≤SiO 2≤ 1.6%.Above-mentioned gained batching is carried out the ball milling mix and blend 1～20 hour, obtain the batch mixing that the suspended particle median size is 0.1～2.0 μ m.
(2) pre-burning: 1000～1500 ℃ of lower pre-burnings 0.5～6 hour, the preparation yttrium was M type permanent-magnet ferrite material Preburning material with gained batch mixing in step (1).
(3) powder process: being at first M type permanent-magnet ferrite material Preburning material with gained yttrium in step (2), is the powder of 0.1～5.0 μ m to median size with grinding of ball grinder.Secondly, add calglucon, glucose, sorbyl alcohol, xitix and oleic acid wherein the mixture more than 2 kinds or 2 kinds as tensio-active agent.The tensio-active agent gross weight accounts for R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Structural weight per-cent is 0.5～10%.At last, sneak into additive A l 2O 3, Cr 2O 3, B 2O 3(or H 3BO 3), SiO 2(or H 2SiO 3), each component of additive accounts for R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Structural weight per-cent is respectively 0.1%≤Al 2O 3≤ 2.0%, 0.1%≤Cr 2O 3≤ 2.0%, 0≤B 2O 3≤ 1.5%, 0≤SiO 2≤ 1.6%; Further adjust formula, with R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Batching, making the additive total amount account for the Preburning material weight percent is 0.01～10.0%.Then adopting weight ratio in water is water: material: ball=1: 1: 8 use ball mill (or sand mill), being milled to median size is 0.08～0.8 μ m.
(4) compacting green compact: according to actual operation requirements, control the size of mold shape, suppress green compact in magnetic field, pressing pressure is 0.1～0.5ton/cm 2, the magnetic field coercive force is 5～15kOe.
(5) sintering: green compact under 900～1300 ℃, are carried out sintering and get device (as watt shape and ring-type etc.) in atmospheric oxygen voltinism atmosphere, sintering time is 0.5～8 hour, and temperature rise rate is 30～500 ℃/h.
(6) grinding and measurement: the magnetic patch that is cooled to room temperature after sintering is cut and grinding, test, measure according to the GB/T3217-92 national standard.
Preferably, above-mentioned a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof is characterized in that: described yttrium is that M type permanent-magnet ferrite material is hexaplanar, and its chemical structural formula is R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3, wherein, 0.01≤x≤0.5,0.1≤y≤0.8,0.01≤z≤1.0,5.0≤n≤6.2,0≤1-x-y≤0.8, R be in Ca, Ba, Sr or Ce, the Pr that does not comprise the group of the lanthanides of La and Nd and Sm a kind of, two kinds and three kinds.If R is that more than two kinds, R need distinguish R in chemical formula simultaneously 1R 2R 3... R m, its chemical structural formula is (R 1R 2R 3... R m) 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3, wherein m is the integer greater than 1.
Preferably, above-mentioned a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof is characterized in that: described yttrium is except R in M type permanent-magnet ferrite material 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3, also include additive outward, the component of additive is Al 2O 3, Cr 2O 3, B 2O 3, SiO 2, its each component accounts for R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Structural weight per-cent is respectively 0.1%≤Al 2O 3≤ 2.0%, 0.1%≤Cr 2O 3≤ 2.0%, 0≤B 2O 3≤ 1.5%, 0≤SiO 2≤ 1.6%.
Preferably, above-mentioned a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof, it is characterized in that: Preburning material is incubated 2～4 hours under 1200～1350 ℃, and green compact are under 950～1150 ℃, and sintering time is 4～6 hours.
Preferably, above-mentioned a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof, it is characterized in that: the magnet rate of temperature fall after sintering is 30～50 ℃/h.
A kind of Magnetoplumbate-type yttrium based permanent magnet ferrite of the present invention can be when sintering temperature be 1150 ℃～1300 ℃, and the value of Br reaches 4.2～4.7kGs, and the value of Hcj reaches 4.5～5.2kOe.Plumbous stone type yttrium based permanent magnet oxysome R of the present invention 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Have higher remanent magnetism and HCJ, when sintered magnet diminishes, after attenuation, still can keep high residual flux density.Magnetoplumbate-type yttrium based permanent magnet ferrite of the present invention is compared with traditional strontium barium ferrite, has reduced sintering temperature, has saved energy consumption.By improving grinding technics, granularity is controlled at 0.4～0.7 μ m, has reduced the ultrafine powder particle less than 0.1 μ m, thereby avoided the magnetic spare difficult forming that causes because particle is meticulous, improved the efficient that manufactures a product.
For achieving the above object, the present invention determines that by X-ray diffractometer (XRD) phase forms, the content of element in X-fluorescence spectroscopic analysis sample piece, vibrating sample magnetometer (VSM) is measured the specific magnetization of material, measure the specific surface area of magnetic with the BET method, measure the permanent magnetism characteristic parameter with B-H magnetic property survey meter.
Description of drawings
Fig. 1 is the XRD diffractogram of Magnetoplumbate-type yttrium based permanent magnet oxysome of preparation gained in embodiment, a wherein, and b, c, d are followed successively by embodiment 1, and embodiment 2, and embodiment 3, and embodiment 4.
Fig. 2 is respectively the scanning electron microscope (SEM) photograph of Magnetoplumbate-type yttrium based permanent magnet oxysome in each embodiment, wherein Fig. 2-1 is isotropy yttrium based permanent magnet oxysome scanning electron microscope (SEM) photograph in embodiment 1, Fig. 2-2 are to adopt the alignment magnetic field moulding in embodiment 3, Magnetoplumbate-type yttrium based permanent magnet oxysome scanning electron microscope (SEM) photograph, Fig. 2-3 are separating twice yttrium based permanent magnet oxysome powder scanning electron microscope (SEM) photograph in embodiment 4.
Fig. 3 is respectively embodiment 1 in 1240 ℃ of sintering temperature art breading, the remanent magnetism of gained Magnetoplumbate-type yttrium based permanent magnet oxysome and coercive force schematic graph and embodiment 4 be in 1210 ℃ of sintering temperature art breading, remanent magnetism, coercive force and the maximum magnetic energy product schematic graph of gained Magnetoplumbate-type yttrium based permanent magnet oxysome.
Embodiment
For further describing the present invention, below in conjunction with embodiment, novel ferrite material of the present invention is described in further detail:
Embodiment 1
Main raw material is La 2O 3, Y 2O 3, Fe 2O 3And Co 3O 4, a small amount of SrCO 3, Al 2O 3, Cr 2O 3, B 2O 3, SiO 2, the chief component composition after sintering satisfies following mol ratio:
R 1-x-yY xLa yO·nFe (12-z)/nCo z/nO 3
Work as x=0.24, y=0.60, R 1Be Sr=0.16, z=0.27, during n=5.95,
According to above-mentioned mole of proportioning, raw material powder is immersed in the water, mixed in ball mill 3 hours, and obtained the batch mixing that the suspended particle particle diameter is 0.1～2.0 μ m, in air atmosphere in 1290 ℃ of pre-burnings 3 hours, XRD analysis determines to contain in phase the M phase of 95wt%, and its main grain-size is 9 μ m.
Until the median size size is less than or equal to 5.0 μ m, the specific surface area (acquisition of BET method) that obtains lapping powder is 7m in grinding in ball grinder 2/ g.
Be 700 ℃ in temperature, thermal treatment under air atmosphere is incubated 5 hours, obtains preburning powdered material one time.
Add subsequently additive, each component addition of additive and a preburning powdered material weight ratio are as follows respectively: 1%wt CaCO 3, 0.6wt%SiO 2, 0.7wt%Al 2O 3, 0.5wt% Ga 2O 3, adding tensio-active agent 1.6wt% calglucon, 10wt% adds oleic acid.Be milled to sand mill the powder that median size is 0.7 μ m, the specific surface area (BET method) that obtains lapping powder is 20m 2/ g, the sand milling powder process time is 10 hours.
Suppress green compact in 15kOe magnetic field and process, the pressure of compacting is 0.5ton/cm 2
Green compact are under 1150 ℃ in sintering temperature, and in atmospheric oxygen voltinism atmosphere, sintering got finished product in 3 hours, and temperature rise rate is 30 ℃/h.The M of finished product accounts for 99.5wt% mutually, remanent magnetism Br=4.64kGs, magneticinduction coercivity H b=4.35kOe, HCJ H CJ=4.77kOe, magnetic energy product (BH) max reaches 5.51MGOe.
Embodiment 2
Main raw material is La 2O 3, Y 2O 3, Fe 2O 3And Co 3O 4, a small amount of SrCO 3, Al 2O 3, Cr 2O 3, B 2O 3, SiO 2Chief component composition after sintering satisfies following mol ratio:
R 1-x-yY xLa yO·nFe (12-z)/nCo z/nO 3
Work as x=0.38, y=0.50, R 1Be Sr=0.12, z=0.45, n=6.0,
According to above-mentioned mole of proportioning with raw material powder in water, mixed in ball mill 5 hours, obtain the batch mixing that the suspended particle particle diameter is 1.5 μ m.1280 ℃ of lower pre-burnings are 2 hours in air atmosphere.The phase of determining XRD often contains the M phase of 90wt%, and its main crystal grain is 10 μ m.
At ball mill grinding, until median size becomes the powder less than or equal to 5.0 μ m, the specific surface area (acquisition of BET method) that obtains lapping powder is 9m 2/ g.
Heat-treat in air atmosphere, temperature is 800 ℃, is incubated 3 hours, obtains preburning powdered material one time.
Add subsequently additive, each component addition of additive and a preburning powdered material weight ratio are as follows respectively: 1%wtCaCO 3, 0.8wt%SiO 2, 0.9wt%Al 2O 3, 0.5wt% SnO 2, adding tensio-active agent 1.6wt% calglucon, 8wt% adds oleic acid.Being milled to median size with sand mill is 0.6 μ m, and the specific surface area (BET method) that obtains lapping powder is 22m 2/ g, the powder process time is 10 hours.
15000Oe suppresses green compact in magnetic field, and the pressure of compacting is about 0.5ton/cm 2
Green compact are under 1200 ℃ in sintering temperature, and in atmospheric oxygen voltinism atmosphere, sintering got finished product in 2.5 hours, and temperature rise rate is about 40 ℃/hour.The M of finished product is 99.5wt% mutually, remanent magnetism Br=4.65kGs, magneticinduction coercivity H b=4.33kOe, HCJ H CJ=5.05kOe, magnetic energy product (BH) max reaches 5.63MGOe.
Embodiment 3
Main raw material is La 2O 3, Y 2O 3, Ce 2O 3, Fe 2O 3And Co 2O 3, a small amount of SrCO 3, Al 2O 3, Cr 2O 3, B 2O 3, SiO 2Chief component composition after sintering satisfies following mol ratio:
R 1-x-yY xLa yO·nFe (12-z)/nCo z/nO 3
X=0.10, y=0.43, R 1Be Sr=0.26, R 2Be Ce=0.21, z=0.33, during n=6.1,
According to above-mentioned mole of proportioning with raw material powder in water, mixed in ball mill 5 hours, obtain the batch mixing that the suspended particle particle diameter is 1.5 μ m.1200 ℃ of lower pre-burnings are 2 hours in air atmosphere.The phase of determining XRD contains the M phase of 95wt%, and its main crystal grain is 10 μ m.
At ball mill grinding, until median size becomes the powder less than or equal to 5.0 μ m, the specific surface area (acquisition of BET method) that obtains lapping powder is 9m 2/ g.
Heat-treat under air atmosphere, temperature is 900 ℃, is incubated 2 hours, obtains preburning powdered material one time.
Add subsequently additive, each component addition of additive and a preburning powdered material weight ratio are as follows respectively: 1wt%CaCO 3, 0.4wt%SiO 2, 1.0wt%Al 2O 3, 5wt%La 2O 3, 3.0wt%Fe 2O 3In with 0.7wt% 2O 3, interpolation tensio-active agent 2wt% calglucon, 1.0wt% xitix, 8wt% add oleic acid, and being milled to median size with sand mill is 0.5 μ m, and the specific surface area (BET method) that obtains lapping powder is 22m 2/ g, the powder process time is 12 hours.
15kOe suppresses green compact in magnetic field, and the pressure of compacting is about 0.5ton/cm 2
Green compact are under 1240 ℃ in sintering temperature, and in atmospheric oxygen voltinism atmosphere, sintering got finished product in 2 hours, and temperature rise rate is about 40 ℃/h.The M of finished product is 100% mutually, remanent magnetism Br=4.41kGs, magneticinduction coercivity H b=4.73kOe, HCJ H cj=5.89kOe, magnetic energy product (BH) max reaches 5.26MGOe.
Embodiment 4
Main raw material is La 2O 3, Y 2O 3, BaCO 3, Fe 2O 3And Co 3O 4, a small amount of SrCO 3, Al 2O 3, CaCO 3, Cr 2O 3, B 2O 3, SiO 2Chief component composition after sintering satisfies following mol ratio:
R 1-x-yY xLa yO·nFe (12-z)/nCo z/nO 3
X=0.20, y=0.59, R 1Be Ba=0.21, z=0.33, during n=6.00,
According to above-mentioned mole of proportioning with raw material powder in water, mixed in ball mill 5 hours, obtain the batch mixing that the suspended particle particle diameter is 1 μ m.1285 ℃ of lower pre-burnings in air atmosphere are incubated 2 hours.The phase of determining XRD often contains 93% M phase, and its main crystal grain is 9 μ m.
At ball mill grinding, until median size becomes the powder less than or equal to 6.0 μ m, the specific surface area (acquisition of BET method) that obtains lapping powder is approximately 10m 2/ g.
Heat-treat under air atmosphere, temperature is 1000 ℃, is incubated 3 hours, obtains Preburning material one time.
Add subsequently additive, each component addition of additive and a preburning powdered material weight ratio are as follows respectively: 1.0wt%CaCO 3, 0.4wt%SiO 2, 1.0wt%Al 2O 3ZrO with 0.4wt% 2, add tensio-active agent 2.0wt% calglucon, the 1.0wt% xitix, 8.0wt% adds oleic acid, and being milled to median size with sand mill is 0.6 μ m, and the specific surface area (BET method) that obtains lapping powder is 25m 2/ g, the powder process time is 15 hours.
13000Oe suppresses green compact in magnetic field, and the pressure of compacting is about 0.5ton/cm 2
Green compact are under 1210 ℃ in sintering temperature, and in air, sintering got finished product in 2 hours, and temperature rise rate is about 35 ℃/h.The M of finished product is 100% mutually, remanent magnetism Br=4.65kGs, magneticinduction coercivity H b=4.37kOe, HCJ H cj=5.33kOe, magnetic energy product (BH) max reaches 5.5MGOe.

Claims (6)

1. Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof, it is characterized in that: preparation technology comprises the following steps:
(1) batch mixing: press chemical structural formula R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Composition requirement, will be with after the corresponding oxidation raw material of contained component and carbonate raw material powder mix, with water, steel ball is according to material: water: the weight ratio proportioning of ball=1: 1: 8 is mixed; Subsequently, add additive A l 2O 3, Cr 2O 3, B 2O 3And SiO 2, its each component is added weight and is accounted for R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Structural weight per-cent is respectively 0.1%≤Al 2O 3≤ 2.0%, 0.1%≤Cr 2O 3≤ 2.0%, 0≤B 2O 3≤ 1.5%, 0≤SiO 2≤ 1.6%, above-mentioned gained batching was carried out the ball milling mix and blend 1～20 hour, obtain the batch mixing that the suspended particle median size is 0.1～2.0 μ m;
(2) pre-burning: 1000～1500 ℃ of lower pre-burnings 0.5～6 hour, the preparation yttrium was M type permanent-magnet ferrite material Preburning material with gained batch mixing in step (1);
(3) powder process: being at first M type permanent-magnet ferrite material Preburning material with gained yttrium in step (2), is the powder of 0.1～5.0 μ m to median size with grinding of ball grinder, then adds tensio-active agent, and the weight of described tensio-active agent accounts for R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Structural weight per-cent is 0.5～10%, and is last, sneaks into additive A l 2O 3, Cr 2O 3, B 2O 3(or H 3BO 3), SiO 2(or H 2SiO 3), each component of additive accounts for R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Structural weight per-cent is respectively 0.1%≤Al 2O 3≤ 2.0%, 0.1%≤Cr 2O 3≤ 2.0%, 0≤B 2O 3≤ 1.5%, 0≤SiO 2≤ 1.6%; Further adjust formula, with R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Batching, making the additive total amount account for the Preburning material weight percent is 0.01～10.0%.Then adopting weight ratio is water: material: ball=1: 1: 8 use ball mill (or sand mill), and being milled to median size is 0.08～0.8 μ m;
(4) compacting green compact; According to actual operation requirements, control the size of mold shape, suppress green compact in magnetic field, pressing pressure is 0.1～0.5ton/cm 2, pulsed magnetic field intensity is 5.0～15.0kOe;
(5) sintering: green compact under 900～1300 ℃, are carried out sintering and get device (as watt shape and ring-type etc.) in atmospheric oxygen voltinism atmosphere, sintering time is 0.5～8 hour, and temperature rise rate is 30～500 ℃/h;
(6) grinding and measurement: the magnetic patch that is cooled to room temperature after sintering is cut and grinding, test, measure according to the GB/T3217-92 national standard.
2. a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite described according to claim 1 and preparation method thereof, wherein the oxide raw material described in step (1) comprises La 2O 3, Y 2O 3, Fe 2O 3, Co 3O 4, Co 2O 3, the carbonate raw material comprises CaCO 3, SrCO 3And BaCO 3, wherein the tensio-active agent described in step (3) is the mixture more than 2 kinds or 2 kinds in calglucon, glucose, sorbyl alcohol, xitix and oleic acid.
According to claim 1 and 2 in arbitrary described a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof, it is characterized in that: described yttrium is that M type permanent-magnet ferrite material is hexaplanar, and its chemical structural formula is R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3, wherein, 0.01≤x≤0.5,0.1≤y≤0.8,0.01≤z≤1.0,5.0≤n≤6.2,0≤1-x-y≤0.8, R be in Ca, Ba, Sr or Ce, the Pr that does not comprise the group of the lanthanides of La and Nd and Sm a kind of, two kinds and three kinds, if R is that more than two kinds, R need distinguish R in chemical formula simultaneously 1R 2R 3... R m, its chemical structural formula is (R 1R 2R 3... R m) 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3, wherein m is the integer greater than 1.
4. arbitrary described a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof according to claim 1 and 2 or 3, it is characterized in that: described yttrium is except R in M type permanent-magnet ferrite material 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3, also include additive outward, the component of additive is Al 2O 3, Cr 2O 3, B 2O 3, SiO 2, its each component accounts for R 1-x-yY xLa yOnFe (12-z)/nCo z/nO 3Structural weight per-cent is respectively 0.1%≤Al 2O 3≤ 2.0%, 0.1%≤Cr 2O 3≤ 2.0%, 0≤B 2O 3≤ 1.5%, 0≤SiO 2≤ 1.6%.
5. arbitrary described a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof according to claim 1 and 2 or 3, it is characterized in that: Preburning material is incubated 1～4 hour under 1200～1350 ℃, green compact are under 950～1300 ℃, and sintering time is 1～6 hour.
6. arbitrary described a kind of Magnetoplumbate-type yttrium based permanent magnet ferrite and preparation method thereof according to claim 1 and 2 or 3, it is characterized in that: the magnet rate of temperature fall after sintering is 30～50 ℃/h.
CN2013100000539A 2013-01-04 2013-01-04 Plumbite type yttrium permanent magnetic ferrite material and preparation method thereof Pending CN103172360A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103964829A (en) * 2014-05-07 2014-08-06 宿州学院 Preparation and sintering of single-aperture blank of oxygen self-supported permanent magnetic ferrite pre-sintering material
CN103964830A (en) * 2014-05-07 2014-08-06 宿州学院 Method for preparing permanent magnetic ferrite by low-temperature sintering
CN103964828A (en) * 2014-05-06 2014-08-06 安徽大学 High-performance permanent magnet ferrite material and preparing method thereof
CN104072124A (en) * 2014-06-30 2014-10-01 中钢天源(马鞍山)通力磁材有限公司 Method for preparing permanent ferrite magnet for direct-current variable frequency motor
CN104496443A (en) * 2014-01-22 2015-04-08 安徽大学 High magnetic-energy-product M type calcium series permanent magnetic ferrite material and preparation method thereof
CN104496453A (en) * 2015-01-09 2015-04-08 徐文萍 Preparation method of high-coercivity strontium-barium ferrite magnetic material
CN106182374A (en) * 2016-07-18 2016-12-07 上海华源磁业股份有限公司 A kind of preparation technology of slim ferrite sheet
CN107010937A (en) * 2017-04-26 2017-08-04 宿州学院 One kind contains Cu2+W-type ferrite material and its preparation
CN109836148A (en) * 2019-02-22 2019-06-04 横店集团东磁股份有限公司 One kind is without La, Co element permanent-magnet ferrite material and preparation method thereof

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JP2006203260A (en) * 1999-06-21 2006-08-03 Neomax Co Ltd Ferrite magnet
CN101786869A (en) * 2009-12-30 2010-07-28 安徽大学 Calcium permanent magnetic ferrite material and preparation method thereof
CN102249658A (en) * 2011-06-09 2011-11-23 安徽大学 Rare earth permanent ferrite material and preparation method thereof

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Publication number Priority date Publication date Assignee Title
JP2006203260A (en) * 1999-06-21 2006-08-03 Neomax Co Ltd Ferrite magnet
CN101786869A (en) * 2009-12-30 2010-07-28 安徽大学 Calcium permanent magnetic ferrite material and preparation method thereof
CN102249658A (en) * 2011-06-09 2011-11-23 安徽大学 Rare earth permanent ferrite material and preparation method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496443A (en) * 2014-01-22 2015-04-08 安徽大学 High magnetic-energy-product M type calcium series permanent magnetic ferrite material and preparation method thereof
CN103964828A (en) * 2014-05-06 2014-08-06 安徽大学 High-performance permanent magnet ferrite material and preparing method thereof
CN103964828B (en) * 2014-05-06 2016-04-27 安徽大学 A kind of high-performance permanent magnetic ferrite material and preparation method thereof
CN103964829A (en) * 2014-05-07 2014-08-06 宿州学院 Preparation and sintering of single-aperture blank of oxygen self-supported permanent magnetic ferrite pre-sintering material
CN103964830A (en) * 2014-05-07 2014-08-06 宿州学院 Method for preparing permanent magnetic ferrite by low-temperature sintering
CN104072124A (en) * 2014-06-30 2014-10-01 中钢天源(马鞍山)通力磁材有限公司 Method for preparing permanent ferrite magnet for direct-current variable frequency motor
CN104496453A (en) * 2015-01-09 2015-04-08 徐文萍 Preparation method of high-coercivity strontium-barium ferrite magnetic material
CN106182374A (en) * 2016-07-18 2016-12-07 上海华源磁业股份有限公司 A kind of preparation technology of slim ferrite sheet
CN107010937A (en) * 2017-04-26 2017-08-04 宿州学院 One kind contains Cu2+W-type ferrite material and its preparation
CN109836148A (en) * 2019-02-22 2019-06-04 横店集团东磁股份有限公司 One kind is without La, Co element permanent-magnet ferrite material and preparation method thereof
CN109836148B (en) * 2019-02-22 2021-04-20 横店集团东磁股份有限公司 Permanent magnetic ferrite material without La and Co elements and preparation method thereof

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Application publication date: 20130626