CN103408296B - 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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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 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 ions migration in iron strontium oxide permanent magnetic material specifically.
Background technology
M type hexagonal ferrite polycrystal forms by take the several oxide that ferric ion is 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 requirement is more and more high.The improvement of ferrite magnetic performance is started with from two aspects: one, process aspect, by the optimization to technological parameters such as ferritic ball-milling technology, moulding process and sintering process, improves magnetic property; Two, by being carried out to new ion, ferrite replaces, optimizing tissue composition and phase structure, thus improve magnetic property.
In the field of permanent-magnet ferrite magnetic material, it is effective a kind of method of studying at present high-performance permanent-magnet ferrite that ion replaces.In recent years, H.Mocuta has studied rear earth element nd and has replaced the impact of Sr on ferrite magnetic performance, finds the increase along with 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 ferric ion on ferrite magnetic performance simultaneously, finds the increase along with neodymium doping, and the coercive force of material also increases and 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 ferrite magnetic performance.Y.Q. the people such as Li has studied rare-earth elements of lanthanum and has replaced the impact of ferric ion on strontium ferrite thin slice magnetic property, and the people such as G. Asghar have studied the impact of Cr – Zn doped and substituted ferric ion on magnetic properties of strontium ferrite.The people such as Liu Xiansong have studied La
2+-Co
2+combine to replace and prepare high coercitive force strontium ferrite, the people such as Takeyuki Kikuchi are also to La
2+-Co
2+combine the impact replacing 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 magnetism of material energy, result demonstration has obtained maximum coercivity value when lanthanum replaces, and when doping x=0.2 sintering temperature is 1000 ℃, obtains remanent magnetism and saturation magnetization maximal value.Most of researchists focus on studying ion and replace this result that affects on iron strontium oxide permanent magnetic material magnetic property, but rarely have research for the rule of ion replacement process intermediate ion migration.
Summary of the invention
For the defect existing in above-mentioned prior art, technical matters to be solved by this invention is to provide a kind of phenetic analysis method that lanthanum cobalt replaces lanthanum cobalt ions migration in iron strontium oxide permanent magnetic material, for further furtheing investigate ion replacement, on the mechanism that affects of iron strontium oxide permanent magnetic material magnetic property, provides strong technical basis.
The invention provides a kind of phenetic analysis method that lanthanum cobalt replaces lanthanum cobalt ions migration in iron strontium oxide permanent magnetic material, concrete steps comprise:
(1) containing the ferrite prefiring material of strontium, mix in bowl mill with the auxiliary agent not adding containing lanthanum cobalt secondary, through wet ball grinding disposed slurry particle mean size, reach 0.6-1.0 μ m, qualified rear dehydration is separated, and the slurry water percentage after requirement dehydration is between 25-40%;
Wherein, the described ferrite prefiring material chemical formula containing strontium is SrFe
12o
l9; The auxiliary agent that the described secondary that does not contain lanthanum cobalt adds is by Al
2o
3, CaCO
3, SiO
2and H
3bO
3form, described strontium ferrite Preburning material is 1:0.027 with the mass ratio of the auxiliary agent not adding containing lanthanum cobalt secondary;
(2) ferrite prefiring material containing strontium mixes in bowl mill with the auxiliary agent that the secondary that contains lanthanum cobalt adds, and through wet ball grinding disposed slurry particle mean size, reaches 0.6-1.0 μ m, and qualified rear dehydration is separated, and the slurry water percentage after requirement dehydration is between 25-40%;
Wherein, the described ferrite prefiring material chemical formula containing strontium is SrFe
12o
l9; The auxiliary agent that the described secondary containing lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3bO
3, La
2o
3form with CoO, described strontium ferrite Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains lanthanum cobalt adds;
(3) adopting wet moulding to be prepared into diameter the slip that does not contain 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 press groove, add step (2) gained containing the slip of lanthanum cobalt and the base substrate suppressing be before positioned over to slip top that to be pressed into diameter be 25-40mm, the mixing base substrate that thickness is 8-12mm;
(4) the qualified base substrate of step (3) moulding is placed in physical environment 24-48 hour air-dry, then the tunnel cave 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 obtains the mixing iron strontium oxide permanent magnetic material sintering;
(5) above iron strontium oxide permanent magnetic material right cylinder step (4) being sintered and bottom surface polishes flat;
(6) right cylinder of step (5) being handled well carries out 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, element qualitative and quantitative analysis is carried out in this surface, again successively grind off successively 1-2mm, with X-ray fluorescence spectrometer, 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, has characterized the rule of the iron strontium oxide permanent magnetic material intermediate ion migration that lanthanum cobalt replaces intuitively.
Further, in the auxiliary agent that the described secondary that does not contain lanthanum cobalt adds, Al
2o
3, CaCO
3, SiO
2and H
3bO
3mass ratio be 9:8:2:4.
Further, the auxiliary agent that the described secondary containing 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.
Further, in the process of manufacturing base substrate, the molding technological condition of idiosome is: material feeding time 10-20sec, the electric current >30A that magnetizes, 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.
X-ray fluorescence spectrometer principle is as follows:
Conventionally x-ray bombardment on material and the secondary X-ray producing XRF (X-Ray Fluorescence), and being used for the X ray of irradiation simple X ray.
When producing X ray with electronics bombardment plate target, it is found that, there is the X ray that several intensity is very high, the high pressure that its energy is not used with acceleration electronics changes, 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 it, and it is that every kind of element is peculiar.Mo Sailai (Moseley) has found the relation of X ray energy and atomic number.
E is characteristic X-ray energy, and Z is atomic number,
it is modifying factor.
Famous Moseley 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, full maturity now, has 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 having with the energy of excitaton source and intensity, also relevant with the content of this element in sample, with following formula, represents
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 ions partitioning in iron strontium oxide permanent magnetic material.The rule that has solved the iron strontium oxide permanent magnetic material intermediate ion migration replacing for sign lanthanum cobalt directly perceived for a long time lacks the technical matters of research, for further further investigation ion replaces, on the mechanism that affects of iron strontium oxide permanent magnetic material magnetic property, provides strong technical basis.
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, interphase, d, e and f face).
Fig. 3 is respectively the lanthanum cobalt ions content distribution figure of sample in embodiment 1.
Fig. 4 is respectively the lanthanum cobalt ions content distribution figure of sample in embodiment 2.
Fig. 5 is respectively the lanthanum cobalt ions 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 test sample: smooth with sand papering, rinse well with anhydrous alcohol on surface, keeps dry pollution-free.
In embodiment, X-ray fluorescence spectrometer used (XRF) is the XRF-1800 type of Japanese Shimadzu company.
embodiment 1
Lanthanum cobalt replaces a phenetic analysis method for iron strontium oxide permanent magnetic material intermediate ion migration, and it comprises the following steps:
(1) containing the ferrite prefiring material of strontium, mix in bowl mill with the auxiliary agent that the secondary that does not contain lanthanum cobalt adds, through wet ball grinding disposed slurry particle mean size, reach 0.9 μ m, qualified rear dehydration is separated, and the slurry water percentage after requirement dehydration is 35%;
Wherein said strontium ferrite Preburning material chemical formula is SrFe
12o
l9;
The auxiliary agent that the wherein said secondary that does not contain lanthanum cobalt adds is by Al
2o
3, CaCO
3, SiO
2and H
3bO
3form, strontium ferrite Preburning material is 1:0.027 with the mass ratio of the auxiliary agent that the secondary that does not contain lanthanum cobalt adds;
(2) ferrite prefiring material containing strontium mixes in bowl mill with the auxiliary agent that the secondary that contains lanthanum cobalt adds, and through wet ball grinding disposed slurry particle mean size, reaches 0.9 μ m, and qualified rear dehydration is separated, and the slurry water percentage after requirement dehydration is 35%;
Wherein said strontium ferrite Preburning material chemical formula is SrFe
12o
l9;
The auxiliary agent that the wherein said secondary containing lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3bO
3, La
2o
3form with CoO, strontium ferrite Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains 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 lanthanum cobalt of the separating and dehydrating of step (1) gained, then base substrate is taken out, in press groove, add the slip containing lanthanum cobalt of step (2) gained and the base substrate suppressing is before positioned over to slip top being pressed into the mixing base substrate that thickness is φ 30 * 10mm left and right, main molding technological condition is: material feeding time 18sec, the electric current 110A that magnetizes, dwell time 19sec, forming pressure 19MPa;
(4) the qualified base substrate of step (3) moulding is placed to 48 hours natural air dryings in physical environment, then the tunnel cave of putting into continuous propelling carries out high temperature sintering, the sintering temperature of sintering process is 950 ℃, sintering time 25 hours, finally obtains the mixing iron strontium oxide permanent magnetic material sintering;
(5) iron strontium oxide permanent magnetic material nahlock upper and lower surface step (4) being sintered polishes flat;
(6) X-ray fluorescence spectrometer for nahlock (XRF) of step (5) being handled well carries out element qualitative and quantitative analysis 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) having been detected has lanthanum cobalt part not process, without lanthanum cobalt, partly grind off 1mm left and right, then use X-ray fluorescence spectrometer (XRF) to carry out element qualitative and quantitative analysis to this surface, analytical approach is identical with step (6), with this, successively grind off X-ray fluorescence spectrometer for 1mm (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 ions of sample distributes and sees Fig. 3.
embodiment 2
Lanthanum cobalt replaces a phenetic analysis method for iron strontium oxide permanent magnetic material intermediate ion migration, and it comprises the following steps:
(1) containing the ferrite prefiring material of strontium, mix in bowl mill with the auxiliary agent that the secondary that does not contain lanthanum cobalt adds, through wet ball grinding disposed slurry particle mean size, reach 0.8 μ m, qualified rear dehydration is separated, and the slurry water percentage after requirement dehydration is 30%;
Wherein said strontium ferrite Preburning material chemical formula is SrFe
12o
l9;
The auxiliary agent that the wherein said secondary that does not contain lanthanum cobalt adds is by Al
2o
3, CaCO
3, SiO
2and H
3bO
3form, strontium ferrite Preburning material is 1:0.027 with the mass ratio of the auxiliary agent that the secondary that does not contain lanthanum cobalt adds;
(2) ferrite prefiring material containing strontium mixes in bowl mill with the auxiliary agent that the secondary that contains lanthanum cobalt adds, and through wet ball grinding disposed slurry particle mean size, reaches 0.8 μ m, and qualified rear dehydration is separated, and the slurry water percentage after requirement dehydration is 30%;
Wherein said strontium ferrite Preburning material chemical formula is SrFe
12o
l9;
The auxiliary agent that the wherein said secondary containing lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3bO
3, La
2o
3form with CoO, strontium ferrite Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains 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 lanthanum cobalt of the separating and dehydrating of step (1) gained, then base substrate is taken out, in press groove, add the slip containing lanthanum cobalt of step (2) gained and the base substrate suppressing is before positioned over to slip top being pressed into the mixing base substrate that thickness is φ 30 * 10mm left and right, main molding technological condition is: material feeding time 15sec, the electric current 100A that magnetizes, dwell time 15sec, forming pressure 18MPa;
(4) the qualified base substrate of step (3) moulding is placed to 48 hours natural air dryings in physical environment, then the tunnel cave of putting into continuous propelling carries out high temperature sintering, the sintering temperature of sintering process is 1100 ℃, sintering time 25 hours, finally obtains the mixing iron strontium oxide permanent magnetic material sintering;
(5) iron strontium oxide permanent magnetic material nahlock upper and lower surface step (4) being sintered polishes flat;
(6) X-ray fluorescence spectrometer for nahlock (XRF) of step (5) being handled well carries out element qualitative and quantitative analysis 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) having been detected has lanthanum cobalt part not process, without lanthanum cobalt, partly grind off 1mm left and right, then use X-ray fluorescence spectrometer (XRF) to carry out element qualitative and quantitative analysis to this surface, analytical approach is identical with step (6), with this, successively grind off 1mm left and right, with X-ray fluorescence spectrometer (XRF), 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 ions of sample distributes and sees Fig. 4.
embodiment 3
Lanthanum cobalt replaces an analytical approach for iron strontium oxide permanent magnetic material intermediate ion migration, and it comprises the following steps:
(1) containing the ferrite prefiring material of strontium, mix in bowl mill with the auxiliary agent that the secondary that does not contain lanthanum cobalt adds, through wet ball grinding disposed slurry particle mean size, reach 1.0 μ m, qualified rear dehydration is separated, and the slurry water percentage after requirement dehydration is 40%;
Wherein said strontium ferrite Preburning material chemical formula is SrFe
12o
l9;
The auxiliary agent that the wherein said secondary that does not contain lanthanum cobalt adds is by Al
2o
3, CaCO
3, SiO
2and H
3bO
3form, strontium ferrite Preburning material is 1:0.027 with the mass ratio of the auxiliary agent that the secondary that does not contain lanthanum cobalt adds;
(2) ferrite prefiring material containing strontium mixes in bowl mill with the auxiliary agent that the secondary that contains lanthanum cobalt adds, and through wet ball grinding disposed slurry particle mean size, reaches 1.0 μ m, and qualified rear dehydration is separated, and the slurry water percentage after requirement dehydration is 40%;
Wherein said strontium ferrite Preburning material chemical formula is SrFe
12o
l9;
The auxiliary agent that the wherein said secondary containing lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3bO
3, La
2o
3form with CoO; Strontium ferrite Preburning material is 1:0.142 with the mass ratio of the auxiliary agent that the secondary that contains 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 lanthanum cobalt of the separating and dehydrating of step (1) gained, then base substrate is taken out, in press groove, add the slip containing lanthanum cobalt of step (2) gained and the base substrate suppressing is before positioned over to slip top being pressed into the mixing base substrate that thickness is φ 30 * 10mm left and right, main molding technological condition is: material feeding time 18sec, the electric current 120A that magnetizes, dwell time 20sec, forming pressure 20MPa;
(4) the qualified base substrate of step (3) moulding is placed to 48 hours natural air dryings in physical environment, then the tunnel cave of putting into continuous propelling carries out high temperature sintering, the sintering temperature of sintering process is 1245 ℃, sintering time 25 hours, finally obtains the mixing iron strontium oxide permanent magnetic material sintering;
(5) iron strontium oxide permanent magnetic material nahlock upper and lower surface step (4) being sintered polishes flat;
(6) X-ray fluorescence spectrometer for nahlock (XRF) of step (5) being handled well carries out element qualitative and quantitative analysis 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) having been detected has lanthanum cobalt part not process, without lanthanum cobalt, partly grind off 1mm left and right, then use X-ray fluorescence spectrometer (XRF) to carry out element qualitative and quantitative analysis to this surface, analytical approach is identical with step (6), with this, successively grind off X-ray fluorescence spectrometer for 1mm (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 ions of sample distributes and sees Fig. 5.Mass percent refers to lanthanum cobalt element example of the mass percent in all elements in sample.By XRF analysis, can clearly demonstrate lanthanum cobalt and replace the ion migration in iron strontium oxide permanent magnetic material.
Claims (3)
1. lanthanum cobalt replaces a phenetic analysis method for lanthanum cobalt ions migration in iron strontium oxide permanent magnetic material, it is characterized in that concrete steps comprise:
(1) containing the ferrite prefiring material of strontium, mix in bowl mill with the auxiliary agent not adding containing lanthanum cobalt secondary, through wet ball grinding disposed slurry particle mean size, reach 0.6-1.0 μ m, qualified rear dehydration is separated, and the slurry water percentage after dehydration is between 25-40%;
Wherein, the described ferrite prefiring material chemical formula containing strontium is SrFe
12o
l9; The auxiliary agent that the described secondary that does not contain lanthanum cobalt adds is by Al
2o
3, CaCO
3, SiO
2and H
3bO
3form Al
2o
3, CaCO
3, SiO
2and H
3bO
3mass ratio be 9:8:2:4, described is 1:0.027 containing the ferrite prefiring material of strontium with the mass ratio of the auxiliary agent not adding containing lanthanum cobalt secondary;
(2) ferrite prefiring material containing strontium mixes in bowl mill with the auxiliary agent that the secondary that contains lanthanum cobalt adds, and through wet ball grinding disposed slurry particle mean size, reaches 0.6-1.0 μ m, and qualified rear dehydration is separated, and the slurry water percentage after dehydration is between 25-40%;
Wherein, the described ferrite prefiring material chemical formula containing strontium is SrFe
12o
l9; The auxiliary agent that the described secondary containing lanthanum cobalt adds is by iron oxide red, CaCO
3, SiO
2, H
3bO
3, La
2o
3form described iron oxide red, CaCO with CoO
3, SiO
2, H
3bO
3, La
2o
3with the mass ratio of CoO be 20:6:2:1:12:5, the described ferrite prefiring material containing strontium is 1:0.142 with the mass ratio of the auxiliary agent that secondary containing lanthanum cobalt adds;
(3) adopting wet moulding to be prepared into diameter the slip that does not contain 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 press groove, add step (2) gained containing the slip of lanthanum cobalt and the base substrate suppressing be before positioned over to slip top that to be pressed into diameter be 25-40mm, the mixing base substrate that thickness is 8-12mm;
(4) the qualified base substrate of step (3) moulding is placed in physical environment 24-48 hour air-dry, then the tunnel cave 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 obtains the mixing iron strontium oxide permanent magnetic material sintering;
(5) above iron strontium oxide permanent magnetic material right cylinder step (4) being sintered and bottom surface polishes flat;
(6) right cylinder of step (5) being handled well carries out 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, element qualitative and quantitative analysis is carried out in this surface, again successively grind off successively 1-2mm, with X-ray fluorescence spectrometer, 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, has characterized the rule of the iron strontium oxide permanent magnetic material intermediate ion migration that lanthanum cobalt replaces intuitively.
2. a kind of lanthanum cobalt as claimed in claim 1 replaces the phenetic analysis method of lanthanum cobalt ions migration in iron strontium oxide permanent magnetic material, it is characterized in that: at the process of manufacturing base substrate, material feeding time 10-20sec, the electric current >30A that magnetizes, dwell time 10-20sec, forming pressure 15-20MPa.
3. a kind of lanthanum cobalt as claimed in claim 1 replaces the phenetic analysis method of lanthanum cobalt ions 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, beryllium window, Rh target, tube current 140mA.
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| CN101712556A (en) * | 2009-10-28 | 2010-05-26 | 上海应用技术学院 | Method for synthesizing presintering hard ferrite material |
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| Minglin Jin等.X-Ray Pole Figure Analysis and Magnetic Properties of Microwave Sintered Sr-M-type Hexagonal Ferrites.《J Supercond Nov Magn》.2013,第26卷2779-2783. |
| X-Ray Pole Figure Analysis and Magnetic Properties of Microwave Sintered Sr-M-type Hexagonal Ferrites;Minglin Jin等;《J Supercond Nov Magn》;20130210;第26卷;2779–2783 * |
| 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》.2008,第27卷(第3期), * |
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