CN103408296A - Characterization analysis method for migration of lanthanum and cobalt ions in lanthanum-cobalt substituted strontium ferrite permanent magnet material - Google Patents
Characterization analysis method for migration of lanthanum and cobalt ions in lanthanum-cobalt substituted strontium ferrite permanent magnet material Download PDFInfo
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- CN103408296A CN103408296A CN2013103548193A CN201310354819A CN103408296A CN 103408296 A CN103408296 A CN 103408296A CN 2013103548193 A CN2013103548193 A CN 2013103548193A CN 201310354819 A CN201310354819 A CN 201310354819A CN 103408296 A CN103408296 A CN 103408296A
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Abstract
The invention provides a characterization analysis method for migration of lanthanum and cobalt ions in a lanthanum-cobalt substituted strontium ferrite permanent magnet material. The method comprises the following steps: mixing a strontium-containing ferrite pre-sintering material with a secondarily added auxiliary agent containing lanthanum and cobalt and with a secondarily added auxiliary agent not containing lanthanum and cobalt in a ball mill, respectively and subjecting obtained mixtures to ball milling in the ball mill; preparing a circular green body from separated and dehydrated slurry not containing lanthanum and cobalt through wet molding, then taking the green body out, adding slurry containing lanthanum and cobalt in a press groove, placing the compacted green body above the slurry containing lanthanum and cobalt, carrying out compaction to prepare a mixed circular green body, allowing the molded green body to enter into a tunnel furnace and carrying out sintering according to a certain process system so as to obtain a sintered mixed strontium ferrite permanent magnet material; polishing the surface of a sample from top to bottom layer by layer so as to remove 1 to 2 mm of the sample and analyzing the surface by using an X-ray fluorescent spectrum analyzer so as to obtain the content of elemental lanthanum and elemental cobalt in a plurality of surfaces; and finally drafting a diagram showing changes of the content of elemental lanthanum and elemental cobalt with migration distance so as to visually display migration of lanthanum and cobalt ions in the strontium ferrite permanent magnet material.
Description
Technical field
The invention belongs to the materialogy field, relate in particular to the Sr-ferrite magnetic material that a kind of lanthanum cobalt replaces, is a kind of phenetic analysis method that lanthanum cobalt replaces lanthanum cobalt ion migration in iron strontium oxide permanent magnetic material specifically.
Background technology
M type hexagonal ferrite polycrystal forms by take the several oxide compound of ferric ion as main cationic components, owing to having its higher cost performance, suitable magnetic property and higher chemical stability thereby being used widely.Along with the fast development of domestic and international economy, more and more large to ferritic throughput requirements, and performance requriements is more and more high.To the improvement of ferrite magnetic performance from two aspects: one, process aspect, by the optimization to processing parameters such as ferritic ball-milling technology, moulding process and sintering process, improve magnetic property; Two, by ferrite is carried out to new ionic replacement, optimizing tissue composition and phase structure, thus improve magnetic property.
In the field of permanent-magnet ferrite magneticsubstance, ionic replacement is effective a kind of method of studying at present high-performance permanent-magnet ferrite.In recent years, H.Mocuta has studied rear earth element nd and has replaced the impact of Sr on the ferrite magnetic performance, finds the increase along with the neodymium doping, and remanent magnetism and the saturation magnetization of material all almost remain unchanged, and coercive force changes.Luojuhua has studied the impact of rear earth element nd replacement iron ion on the ferrite magnetic performance simultaneously, finds the increase along with the neodymium doping, and the coercive force of material also increases and the saturation magnetization reduction.The people such as Wandee Onreabroy have studied respectively rare-earth elements of lanthanum and have replaced the impact of Sr on the ferrite magnetic performance.Y.Q. the people such as Li has studied rare-earth elements of lanthanum and has replaced the impact of iron ion on strontium ferrites thin slice magnetic property, and the people such as G. Asghar have studied the impact of Cr – Zn doped and substituted iron ion on magnetic properties of strontium ferrite.The people such as Liu Xiansong have studied La
2+-Co
2+Combine replacement and prepare high coercitive force strontium ferrite, the people such as Takeyuki Kikuchi are also to La
2+-Co
2+Combine the impact replaced the magnetism of material energy and be studied, find along with La
2+-Co
2+The increase of replacement amount, the coercive force of material is significantly improved.The people such as N.Rezlescu have studied rare-earth elements La, Gd and Er replaces the impact on the magnetism of material energy, the result demonstration has obtained maximum coercivity value when lanthanum replaces, when doping x=0.2 sintering temperature is 1000 ℃, obtain remanent magnetism and saturation magnetization maximum value.Most of researchists focus on studying affect this result of ionic replacement on the iron strontium oxide permanent magnetic material magnetic property, but rarely have research for the rule of ionic replacement process intermediate ion migration.
Summary of the invention
For the defect existed in above-mentioned prior art, technical problem to be solved by this invention is to provide a kind of phenetic analysis method that lanthanum cobalt replaces lanthanum cobalt ion migration in iron strontium oxide permanent magnetic material, for further further investigation ionic replacement provides strong technical basis to the mechanism that affects of iron strontium oxide permanent magnetic material magnetic property.
The invention provides a kind of phenetic analysis method that lanthanum cobalt replaces lanthanum cobalt ion migration in iron strontium oxide permanent magnetic material, concrete steps comprise:
(1) contain the ferrite prefiring material of strontium and mix in ball mill with the auxiliary agent that does not contain the interpolation of lanthanum cobalt secondary, reach 0.6-1.0 μ m through wet ball grinding disposed slurry mean particle size, qualified rear dehydration separates, and the slurry water ratio after requiring to dewater is between 25-40%;
Wherein, the described ferrite prefiring material chemical formula that contains strontium is SrFe
12O
L9The auxiliary agent that the described secondary that does not contain the lanthanum cobalt adds is by Al
2O
3, CaCO
3, SiO
2And H
3BO
3Form, described strontium ferrites Preburning material is 1:0.027 with the mass ratio of the auxiliary agent that does not contain the interpolation of lanthanum cobalt secondary;
(2) ferrite prefiring material that contains strontium mixes in ball mill with the auxiliary agent that the secondary that contains the lanthanum cobalt adds, and reaches 0.6-1.0 μ m through wet ball grinding disposed slurry mean particle size, and qualified rear dehydration separates, and the slurry water ratio after requiring to dewater is between 25-40%;
Wherein, the described ferrite prefiring material chemical formula that contains strontium is SrFe
12O
L9The auxiliary agent that the described secondary that contains the lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3BO
3, La
2O
3With CoO, form, described strontium ferrites Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains the lanthanum cobalt adds;
(3) adopting wet moulding to be prepared into diameter the slip that does not contain the lanthanum cobalt of the separating and dehydrating of step (1) gained is 25-40mm, thickness is the base substrate of 4-6mm, then base substrate is taken out, in the press groove, add step (2) gained contain the lanthanum cobalt slip and will before the base substrate that suppress be positioned over the slip top to be pressed into diameter be 25-40mm, thickness is the mixing base substrate of 8-12mm;
(4) base substrate that step (3) moulding is qualified in physical environment, place 24-48 hour air-dry, then the tunnel furnace of putting into continuous propelling carries out high temperature sintering, the sintering temperature of sintering process is 950-1245 ℃, sintering time 20-30 hour, finally obtain the mixing iron strontium oxide permanent magnetic material sintered;
(5) above iron strontium oxide permanent magnetic material right cylinder step (4) sintered and bottom surface polishes flat;
(6) right cylinder of step (5) being handled well carries out the element qualitative and quantitative analysis with X-ray fluorescence spectrometer to upper and lower two surfaces of right cylinder;
(7) the cylindrical surface without lanthanum cobalt part of step (6) having been detected grinds off 1-2mm, then with X-ray fluorescence spectrometer, the element qualitative and quantitative analysis is carried out in this surface, again successively grind off successively 1-2mm, with X-ray fluorescence spectrometer, the element qualitative and quantitative analysis is carried out in this surface simultaneously, and then obtain the lanthanum cobalt element content of 4-11 face, last drafting pattern, characterized the rule of the iron strontium oxide permanent magnetic material intermediate ion migration that the lanthanum cobalt replaces intuitively.
Further, in the auxiliary agent that the described secondary that does not contain the lanthanum cobalt adds, Al
2O
3, CaCO
3, SiO
2And H
3BO
3Mass ratio be 9:8:2:4.
Further, the described auxiliary agent that contains the secondary interpolation of lanthanum cobalt is iron oxide red, CaCO
3, SiO
2, H
3BO
3, La
2O
3With the mass ratio of CoO be 20:6:2:1:12:5.
Further, manufacturing the process of base substrate, the molding technological condition of idiosome is: material feeding time 10-20sec, electric current magnetizes > 30A, dwell time 10-20sec, forming pressure 15-20MPa.
Further, the technical indicator of X-ray fluorescence spectrometer is: X-ray tube 4KW thin window, beryllium window, Rh target, tube current 140mA.
The X-ray fluorescence spectrometer principle is as follows:
Usually x-ray bombardment on material and the secondary X-ray produced XRF (X-Ray Fluorescence), and the X ray that handle is used for irradiating is simple X ray.
When with electronics bombardment plate target, producing X ray, it is found that, the X ray that several intensity is very high is arranged, its energy does not change with the high pressure that the acceleration electronics is used, and the target of different elements, the energy of the X ray that it is special is also different, and people call characteristic X-ray to it, and it is that every kind of element is peculiar.Mo Sailai (Moseley) has found the relation of X ray energy and ordination number.
E is the characteristic X-ray energy, and Z is ordination number,
It is modifying factor.
Famous Moseley's law that Here it is, it has opened up the application of X-ray analysis in ultimate analysis.
X ray is for ultimate analysis, it is a kind of new analytical technology, but after the exploration through two more than ten years, fully matured now, become a kind of new analytical technology that is widely used in the every field such as metallurgy, geology, coloured, building materials, commodity inspection, environmental protection, health.
The intensity of the characteristic X-ray of each element is except outside the Pass with the energy of excitaton source and intensity, having, also relevant with the content of this element in sample, means with following formula
Ii =f（C
1,C
2…C
i…) i=1,2…
Ii is the intensity of the characteristic X-ray of i element in sample, C
1, C
2The content of each element in sample..
Therefore, according to the intensity of the characteristic X-ray of each element, just can obtain the content information of each element, the ultimate principle of x-ray fluorescence analysis that Here it is.
The present invention compares with prior art, and its technical progress is significant.The present invention is a kind of method of utilizing X-ray fluorescence spectrometer (XRF) qualitative and quantitative analysis lanthanum cobalt to replace lanthanum cobalt ion partitioning in iron strontium oxide permanent magnetic material.The rule that has solved for a long time the iron strontium oxide permanent magnetic material intermediate ion migration replaced for sign lanthanum cobalt directly perceived lacks the technical problem of research, for further further investigation ionic replacement provides strong technical basis to the mechanism that affects of iron strontium oxide permanent magnetic material magnetic property.
The accompanying drawing explanation
Fig. 1 is iron strontium oxide permanent magnetic material right cylinder overall schematic.
Fig. 2 is for cutting apart figure, (being followed successively by from top to bottom a, b, c, separation surface, d, e and f face).
Fig. 3 is respectively the lanthanum cobalt ion content distribution figure of sample in embodiment 1.
Fig. 4 is respectively the lanthanum cobalt ion content distribution figure of sample in embodiment 2.
Fig. 5 is respectively the lanthanum cobalt ion content distribution figure of sample in embodiment 3.
Embodiment
Below by embodiment, also by reference to the accompanying drawings the present invention is further set forth, but do not limit the present invention.
The preparation of XRF specimen: smooth with sand papering, rinse well with raw spirit on surface, keeps dry pollution-free.
In embodiment, X-ray fluorescence spectrometer used (XRF) is the XRF-1800 type of Japanese Shimadzu company.
A kind of lanthanum cobalt replaces the phenetic analysis method of iron strontium oxide permanent magnetic material intermediate ion migration, and it comprises the following steps:
(1) contain the ferrite prefiring material of strontium and mix in ball mill with the auxiliary agent that the secondary that does not contain the lanthanum cobalt adds, reach 0.9 μ m through wet ball grinding disposed slurry mean particle size, qualified rear dehydration separates, and the slurry water ratio after requiring to dewater is 35%;
Wherein said strontium ferrites Preburning material chemical formula is SrFe
12O
L9
The auxiliary agent that the wherein said secondary that does not contain the lanthanum cobalt adds is by Al
2O
3, CaCO
3, SiO
2And H
3BO
3Form, the strontium ferrites Preburning material is 1:0.027 with the mass ratio of the auxiliary agent that the secondary that does not contain the lanthanum cobalt adds;
(2) ferrite prefiring material that contains strontium mixes in ball mill with the auxiliary agent that the secondary that contains the lanthanum cobalt adds, and reaches 0.9 μ m through wet ball grinding disposed slurry mean particle size, and qualified rear dehydration separates, and the slurry water ratio after requiring to dewater is 35%;
Wherein said strontium ferrites Preburning material chemical formula is SrFe
12O
L9
The auxiliary agent that the wherein said secondary that contains the lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3BO
3, La
2O
3With CoO, form, the strontium ferrites Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains the lanthanum cobalt adds;
(3) adopt wet moulding to be prepared into the base substrate that thickness is φ 30 * 5mm left and right the slip that does not contain the lanthanum cobalt of the separating and dehydrating of step (1) gained, then base substrate is taken out, the base substrate that adds the slip that contains the lanthanum cobalt of step (2) gained and will suppress before in the press groove is positioned over the slip top and is pressed into the mixing base substrate that thickness is φ 30 * 10mm left and right, and main molding technological condition is: material feeding time 18sec, the electric current 110A that magnetizes, dwell time 19sec, forming pressure 19MPa;
(4) base substrate that step (3) moulding is qualified is placed 48 hours natural air dryings in physical environment, then the tunnel furnace of putting into continuous propelling carries out high temperature sintering, the sintering temperature of sintering process is 950 ℃, sintering time 25 hours, finally obtain the mixing iron strontium oxide permanent magnetic material sintered;
(5) iron strontium oxide permanent magnetic material nahlock upper and lower surface step (4) sintered polishes flat;
(6) nahlock of step (5) being handled well carries out the element qualitative and quantitative analysis with X-ray fluorescence spectrometer (XRF) to upper and lower two surfaces of nahlock, and technical indicator is: X-ray tube 4KW thin window, beryllium window, Rh target, tube current 140mA;
(7) sample piece step (6) detected has lanthanum cobalt part not process, without the lanthanum cobalt, partly grind off the 1mm left and right, then use X-ray fluorescence spectrometer (XRF) to carry out the element qualitative and quantitative analysis to this surface, analytical procedure is identical with step (6), with this, successively grind off 1mm, with X-ray fluorescence spectrometer (XRF), element left and right qualitative and quantitative analysis is carried out in this surface, and then can obtain the lanthanum cobalt element content of a in Fig. 2, b, c and d face, last drafting pattern.The lanthanum cobalt ion of sample distributes and sees Fig. 3.
A kind of lanthanum cobalt replaces the phenetic analysis method of iron strontium oxide permanent magnetic material intermediate ion migration, and it comprises the following steps:
(1) contain the ferrite prefiring material of strontium and mix in ball mill with the auxiliary agent that the secondary that does not contain the lanthanum cobalt adds, reach 0.8 μ m through wet ball grinding disposed slurry mean particle size, qualified rear dehydration separates, and the slurry water ratio after requiring to dewater is 30%;
Wherein said strontium ferrites Preburning material chemical formula is SrFe
12O
L9
The auxiliary agent that the wherein said secondary that does not contain the lanthanum cobalt adds is by Al
2O
3, CaCO
3, SiO
2And H
3BO
3Form, the strontium ferrites Preburning material is 1:0.027 with the mass ratio of the auxiliary agent that the secondary that does not contain the lanthanum cobalt adds;
(2) ferrite prefiring material that contains strontium mixes in ball mill with the auxiliary agent that the secondary that contains the lanthanum cobalt adds, and reaches 0.8 μ m through wet ball grinding disposed slurry mean particle size, and qualified rear dehydration separates, and the slurry water ratio after requiring to dewater is 30%;
Wherein said strontium ferrites Preburning material chemical formula is SrFe
12O
L9
The auxiliary agent that the wherein said secondary that contains the lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3BO
3, La
2O
3With CoO, form, the strontium ferrites Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains the lanthanum cobalt adds;
(3) adopt wet moulding to be prepared into the base substrate that thickness is φ 30 * 5mm left and right the slip that does not contain the lanthanum cobalt of the separating and dehydrating of step (1) gained, then base substrate is taken out, the base substrate that adds the slip that contains the lanthanum cobalt of step (2) gained and will suppress before in the press groove is positioned over the slip top and is pressed into the mixing base substrate that thickness is φ 30 * 10mm left and right, and main molding technological condition is: material feeding time 15sec, the electric current 100A that magnetizes, dwell time 15sec, forming pressure 18MPa;
(4) base substrate that step (3) moulding is qualified is placed 48 hours natural air dryings in physical environment, then the tunnel furnace of putting into continuous propelling carries out high temperature sintering, the sintering temperature of sintering process is 1100 ℃, sintering time 25 hours, finally obtain the mixing iron strontium oxide permanent magnetic material sintered;
(5) iron strontium oxide permanent magnetic material nahlock upper and lower surface step (4) sintered polishes flat;
(6) nahlock of step (5) being handled well carries out the element qualitative and quantitative analysis with X-ray fluorescence spectrometer (XRF) to upper and lower two surfaces of nahlock, and technical indicator is: X-ray tube 4KW thin window, beryllium window, Rh target, tube current 140mA;
(7) sample piece step (6) detected has lanthanum cobalt part not process, without the lanthanum cobalt, partly grind off the 1mm left and right, then use X-ray fluorescence spectrometer (XRF) to carry out the element qualitative and quantitative analysis to this surface, analytical procedure is identical with step (6), with this, successively grind off the 1mm left and right, with X-ray fluorescence spectrometer (XRF), the element qualitative and quantitative analysis is carried out in this surface, and then can obtain the lanthanum cobalt element content of a in Fig. 2, b, c and d face, last drafting pattern.The lanthanum cobalt ion of sample distributes and sees Fig. 4.
A kind of lanthanum cobalt replaces the analytical procedure of iron strontium oxide permanent magnetic material intermediate ion migration, and it comprises the following steps:
(1) contain the ferrite prefiring material of strontium and mix in ball mill with the auxiliary agent that the secondary that does not contain the lanthanum cobalt adds, reach 1.0 μ m through wet ball grinding disposed slurry mean particle size, qualified rear dehydration separates, and the slurry water ratio after requiring to dewater is 40%;
Wherein said strontium ferrites Preburning material chemical formula is SrFe
12O
L9
The auxiliary agent that the wherein said secondary that does not contain the lanthanum cobalt adds is by Al
2O
3, CaCO
3, SiO
2And H
3BO
3Form, the strontium ferrites Preburning material is 1:0.027 with the mass ratio of the auxiliary agent that the secondary that does not contain the lanthanum cobalt adds;
(2) ferrite prefiring material that contains strontium mixes in ball mill with the auxiliary agent that the secondary that contains the lanthanum cobalt adds, and reaches 1.0 μ m through wet ball grinding disposed slurry mean particle size, and qualified rear dehydration separates, and the slurry water ratio after requiring to dewater is 40%;
Wherein said strontium ferrites Preburning material chemical formula is SrFe
12O
L9
The auxiliary agent that the wherein said secondary that contains the lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3BO
3, La
2O
3With CoO, form; The strontium ferrites Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains the lanthanum cobalt adds;
(3) adopt wet moulding to be prepared into the base substrate that thickness is φ 30 * 5mm left and right the slip that does not contain the lanthanum cobalt of the separating and dehydrating of step (1) gained, then base substrate is taken out, the base substrate that adds the slip that contains the lanthanum cobalt of step (2) gained and will suppress before in the press groove is positioned over the slip top and is pressed into the mixing base substrate that thickness is φ 30 * 10mm left and right, and main molding technological condition is: material feeding time 18sec, the electric current 120A that magnetizes, dwell time 20sec, forming pressure 20MPa;
(4) base substrate that step (3) moulding is qualified is placed 48 hours natural air dryings in physical environment, then the tunnel furnace of putting into continuous propelling carries out high temperature sintering, the sintering temperature of sintering process is 1245 ℃, sintering time 25 hours, finally obtain the mixing iron strontium oxide permanent magnetic material sintered;
(5) iron strontium oxide permanent magnetic material nahlock upper and lower surface step (4) sintered polishes flat;
(6) nahlock of step (5) being handled well carries out the element qualitative and quantitative analysis with X-ray fluorescence spectrometer (XRF) to upper and lower two surfaces of nahlock, and technical indicator is: X-ray tube 4KW thin window, beryllium window, Rh target, tube current 140mA;
(7) sample piece step (6) detected has lanthanum cobalt part not process, without the lanthanum cobalt, partly grind off the 1mm left and right, then use X-ray fluorescence spectrometer (XRF) to carry out the element qualitative and quantitative analysis to this surface, analytical procedure is identical with step (6), with this, successively grind off 1mm, with X-ray fluorescence spectrometer (XRF), element left and right qualitative and quantitative analysis is carried out in this surface, and then can obtain the lanthanum cobalt element content of a in Fig. 2, b, c and d face, last drafting pattern.The lanthanum cobalt ion of sample distributes and sees Fig. 5.Mass percent refers to lanthanum cobalt element mass percent example in all elements in sample.By XRF analysis, can clearly demonstrate the lanthanum cobalt and replace the ion migration in iron strontium oxide permanent magnetic material.
Claims (5)
1. a lanthanum cobalt replaces the phenetic analysis method that in iron strontium oxide permanent magnetic material, the lanthanum cobalt ion moves, and it is characterized in that concrete steps comprise:
(1) contain the ferrite prefiring material of strontium and mix in ball mill with the auxiliary agent that does not contain the interpolation of lanthanum cobalt secondary, reach 0.6-1.0 μ m through wet ball grinding disposed slurry mean particle size, qualified rear dehydration separates, and the slurry water ratio after dehydration is between 25-40%;
Wherein, the described ferrite prefiring material chemical formula that contains strontium is SrFe
12O
L9The auxiliary agent that the described secondary that does not contain the lanthanum cobalt adds is by Al
2O
3, CaCO
3, SiO
2And H
3BO
3Form, described strontium ferrites Preburning material is 1:0.027 with the mass ratio of the auxiliary agent that does not contain the interpolation of lanthanum cobalt secondary;
(2) ferrite prefiring material that contains strontium mixes in ball mill with the auxiliary agent that the secondary that contains the lanthanum cobalt adds, and reaches 0.6-1.0 μ m through wet ball grinding disposed slurry mean particle size, and qualified rear dehydration separates, and the slurry water ratio after dehydration is between 25-40%;
Wherein, the described ferrite prefiring material chemical formula that contains strontium is SrFe
12O
L9The auxiliary agent that the described secondary that contains the lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3BO
3, La
2O
3With CoO, form, described strontium ferrites Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains the lanthanum cobalt adds;
(3) adopting wet moulding to be prepared into diameter the slip that does not contain the lanthanum cobalt of the separating and dehydrating of step (1) gained is 25-40mm, thickness is the base substrate of 4-6mm, then base substrate is taken out, in the press groove, add step (2) gained contain the lanthanum cobalt slip and will before the base substrate that suppress be positioned over the slip top to be pressed into diameter be 25-40mm, thickness is the mixing base substrate of 8-12mm;
(4) base substrate that step (3) moulding is qualified in physical environment, place 24-48 hour air-dry, then the tunnel furnace of putting into continuous propelling carries out high temperature sintering, the sintering temperature of sintering process is 950-1245 ℃, sintering time 20-30 hour, finally obtain the mixing iron strontium oxide permanent magnetic material sintered;
(5) above iron strontium oxide permanent magnetic material right cylinder step (4) sintered and bottom surface polishes flat;
(6) right cylinder of step (5) being handled well carries out the element qualitative and quantitative analysis with X-ray fluorescence spectrometer to upper and lower two surfaces of right cylinder;
(7) the cylindrical surface without lanthanum cobalt part of step (6) having been detected grinds off 1-2mm, then with X-ray fluorescence spectrometer, the element qualitative and quantitative analysis is carried out in this surface, again successively grind off successively 1-2mm, with X-ray fluorescence spectrometer, the element qualitative and quantitative analysis is carried out in this surface simultaneously, and then obtain the lanthanum cobalt element content of 4-11 face, last drafting pattern, characterized the rule of the iron strontium oxide permanent magnetic material intermediate ion migration that the lanthanum cobalt replaces intuitively.
2. a kind of lanthanum cobalt as claimed in claim 1 replaces the phenetic analysis method of lanthanum cobalt ion migration in iron strontium oxide permanent magnetic material, it is characterized in that: in the auxiliary agent that the described secondary that does not contain the lanthanum cobalt adds, and Al
2O
3, CaCO
3, SiO
2And H
3BO
3Mass ratio be 9:8:2:4.
3. a kind of lanthanum cobalt as claimed in claim 1 replaces the phenetic analysis method of lanthanum cobalt ion migration in iron strontium oxide permanent magnetic material, it is characterized in that: the auxiliary agent that the described secondary that contains the lanthanum cobalt adds is iron oxide red, CaCO
3, SiO
2, H
3BO
3, La
2O
3With the mass ratio of CoO be 20:6:2:1:12:5.
4. a kind of lanthanum cobalt as claimed in claim 1 replaces the phenetic analysis method of lanthanum cobalt ion migration in iron strontium oxide permanent magnetic material, it is characterized in that: manufacturing the process of base substrate, material feeding time 10-20sec, electric current magnetizes > 30A, dwell time 10-20sec, forming pressure 15-20MPa.
5. a kind of lanthanum cobalt as claimed in claim 1 replaces the phenetic analysis method of lanthanum cobalt ion migration in iron strontium oxide permanent magnetic material, it is characterized in that: the technical indicator of X-ray fluorescence spectrometer is: X-ray tube 4KW thin window, the beryllium window, Rh target, tube current 140mA.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004103909A1 (en) * | 2003-05-21 | 2004-12-02 | Pacific Metals Co., Ltd. | Magnetoplumbite type ferrite particle, anisotropic sintered magnet, and producing method of the same |
| CN101712556A (en) * | 2009-10-28 | 2010-05-26 | 上海应用技术学院 | Method for synthesizing presintering hard ferrite material |
| CN101870579A (en) * | 2010-06-10 | 2010-10-27 | 上海应用技术学院 | Permanently magnetic strontium ferrite material and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004103909A1 (en) * | 2003-05-21 | 2004-12-02 | Pacific Metals Co., Ltd. | Magnetoplumbite type ferrite particle, anisotropic sintered magnet, and producing method of the same |
| CN101712556A (en) * | 2009-10-28 | 2010-05-26 | 上海应用技术学院 | Method for synthesizing presintering hard ferrite material |
| CN101870579A (en) * | 2010-06-10 | 2010-10-27 | 上海应用技术学院 | Permanently magnetic strontium ferrite material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| MINGLIN JIN等: "X-Ray Pole Figure Analysis and Magnetic Properties of Microwave Sintered Sr-M-type Hexagonal Ferrites", 《J SUPERCOND NOV MAGN》 * |
| 肖国拾等: "Ｘ射线荧光光谱测定稀土铁氧体的方法研究", 《世界地质》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114591074A (en) * | 2022-03-28 | 2022-06-07 | 电子科技大学 | Preparation technology of high-remanence M-type barium ferrite for self-biased circulator |
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