CN104876563A - Ferrite magnetic-isolating material - Google Patents
Ferrite magnetic-isolating material Download PDFInfo
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- CN104876563A CN104876563A CN201510196126.5A CN201510196126A CN104876563A CN 104876563 A CN104876563 A CN 104876563A CN 201510196126 A CN201510196126 A CN 201510196126A CN 104876563 A CN104876563 A CN 104876563A
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Abstract
The invention relates to a ferrite magnetic-isolating material, which comprises main components Fe2O3, BaO and SrO and trace additives. The ferrite magnetic-isolating material is characterized by comprising the following main components by molar ratio: 50%-55% of Fe2O3, 20%-25% of BaO and 22%-28% of SrO; and the trace additives is one or more of the following main components by molar ratio: 0.08%-0.20% of La, 0.15%-0.30% of Co and 3%-8% of talcum powder. The ferrite magnetic-isolating material has a resistance value of 3-5 gigaohms, is a relatively good insulator, and does not generate a vortex phenomenon when working in a magnetic field. In addition, electromagnetic directional processing is carried out during compaction; magnetic crystal growth is formed in the firing process; the ferrite magnetic-isolating material belongs to a magnetocrystalline chain which is formed by uniaxial magnetocrystalline; the uniaxial magnetocrystalline chain has a hindering effect on a magnetic line, and is high in magnetic reluctivity; and the magnetic reluctivity of a magnetocrystalline clearance named a magnetic wall is low, so that the magnetic line can generate a polarization effect by the uniaxial magnetocrystalline chain.
Description
Technical field
The present invention relates to a kind of ferrite NULL.
Background technology
Common metal and non-metallic material all can not be accomplished every magnetic, need magnetic line of force short circuit, and form magnetic shielding every magnetic, as lead can isolate X-ray, but can not every magnetic; Current high-power permanent magnet motor for vehicles, rotor magnetic Circuit Design, in order to Eliminate highter harmonic, adopts air every magnetic, up to the present, does not also have ideal NULL.
Summary of the invention
The invention provides every the good NULL of magnetic effect, the technical scheme taked is: a kind of ferrite NULL, comprises main component Fe
2o
3,baO, SrO and micro-additive, is characterized in that: the mol ratio of described main component content is, Fe
2o
3: 50-55%, BaO:20-25%, SrO:22-28%, described micro-additive is one or more in following composition, and with described three kinds of main component weight sum mol ratios is: La:0.08-0.20%, Co:0.15-0.30%, talcum powder: 3-8%.
As one of the preferred version of such scheme, the mol ratio of described main component content is Fe
2o
3: 51-53%, BaO:21-24%, SrO:23-25%.
As one of the preferred version of such scheme, the mol ratio of described main component content is Fe
2o
3: 53%, BaO:22%, SrO:25%.
As one of the preferred version of such scheme, described micro-additive and main component weight sum mol ratio are La:0.10-0.15%, Co:0.18-0.25%, talcum powder: 4-6%.
As one of the preferred version of such scheme, described micro-additive and main component weight sum mol ratio are La:0.1%, Co:0.2%, talcum powder: 5%.
Described a kind of ferrite NULL preparation method, is characterized in that: comprise following preparation process:
The first step, batching: the mol ratio taking main component content: Fe
2o
3: 50-55%, BaO:20-25%, SrO:22-28%, described micro-additive is one or more in following composition, and with described three kinds of main component weight sum mol ratios is: La:0.08-0.20%, Co:0.15-0.30%, talcum powder: 3-8%; Then mix;
Second step, ball milling: by the first step gained material powder ball milling 1-2 hour in ball mill, make material powder particles even;
3rd step, slurrying pressed compact, adds water second step gained material powder and stirs into slurry, take hydropress pressed compact, in pressed compact process, carry out magnetic field orientating to slurry;
4th step, sintering: the 3rd step gained blank is burnt 7-10 hour in about 780 DEG C stoves; Fire 1-3 hour for 780-1020 DEG C; When pressing 100-120 DEG C/h of cooling 4-6 again, close stove Temperature fall, form ferrite NULL.
As one of the preferred version of such scheme, under the state that described magnetic field orientating is in pine dress completely at powder granule, carry out magnetic field orientating.
Described ferrite NULL, the plastics for magnetic power apparatus, magnetic switch, anti-electromagnetic radiation add filler, motor magnetic circuit.
The Ferrite Material obtained according to above-mentioned condition has the resistance value of 3-5 megaohm, and be a kind of isolator preferably, it works and can not produce vortex phenomenon in magnetic field; In addition, owing to having carried out electromagnetic oriented process when pressed compact, magnetocrystalline growth is formed in sintering procedure, belong to uniaxial magnetic crystalline substance and form magnetocrystalline chain, single shaft magnetocrystalline chain has inhibition to magnetic line of force, its specific reluctance is high, and the specific reluctance being called magnetic wall in magnetocrystalline gap is low, so single shaft magnetocrystalline chain can make magnetic line of force produce polarization.
Experiment prove, when the single shaft magnetocrystalline chain of two pieces of NULL becomes 90 degree to intersect than time parallel every magnetic efficiency raising 30%.
Embodiment:
Embodiment 1:
A kind of ferrite NULL, comprises main component Fe
2o
3,baO, SrO and micro-additive, the mol ratio of described main component content is, Fe
2o
3: 55%, BaO:20%, SrO:25%, described micro-additive and described three kinds of main component weight sum mol ratios are: La:0.08%, Co:0.15%, talcum powder: 3%.
The preparation method of above-mentioned ferrite NULL, the steps include:
The first step, the molar ratio ingredient by following component and content: Fe
2o
3: 53%, BaO:20%, SrO:25%, add micro-additive in addition, described micro-additive and described three kinds of main component weight sum mol ratios are: La:0.08%, Co:0.15%, talcum powder: 3%, then mix.
Second step, ball milling: by the first step gained material powder ball milling 2 hours in ball mill, make material powder particles even;
3rd step, slurrying pressed compact, adds water second step gained material powder and stirs into slurry, take hydropress pressed compact, in pressed compact process, carry out magnetic field orientating to slurry; In orientation process, particle is in the state of pine dress completely.
4th step, sintering: the 3rd step gained blank is burnt 10 hours in about 780 DEG C stoves; Fire 3 hours for 780 DEG C; Again by 120 DEG C/h of coolings 6 hours, close stove Temperature fall, form ferrite magnetic isolation board.
Described ferrite NULL, the plastics for magnetic power apparatus, magnetic switch, anti-electromagnetic radiation add filler, the process of motor magnetic circuit every magnetic.
Embodiment 2:
A kind of ferrite NULL, comprises main component Fe
2o
3,baO, SrO and micro-additive, the mol ratio of described main component content is, Fe
2o
3: 50%, BaO:22%, SrO:28%, described micro-additive and described three kinds of main component weight sum mol ratios are: La:0.18%, Co:0.30%, talcum powder: 8%.
The preparation method of above-mentioned ferrite NULL, the steps include:
The first step, the molar ratio ingredient by following component and content: Fe
2o
3: 50%, BaO:22%, SrO:28%, add micro-additive in addition, described micro-additive and described three kinds of main component weight sum mol ratios are: La:0.18%, Co:0.30%, talcum powder: 8%, then mix.
Second step, ball milling: by the first step gained material powder ball milling 1.5 hours in ball mill, make material powder particles even;
3rd step, slurrying pressed compact, adds water second step gained material powder and stirs into slurry, take hydropress pressed compact, in pressed compact process, carry out magnetic field orientating to slurry; In orientation process, particle is in the state of pine dress completely.
4th step, sintering: the 3rd step gained blank is burnt 8 hours in about 780 DEG C stoves; Fire 1 hour for 1000 DEG C; Again by 100 DEG C/h of coolings 4 hours, close stove Temperature fall, form ferrite magnetic isolation board.
Embodiment 3:
A kind of ferrite NULL, comprises main component Fe
2o
3,baO, SrO and micro-additive, the mol ratio of described main component content is, Fe
2o
3: 53%, BaO:22%, SrO:25%, described micro-additive and described three kinds of main component weight sum mol ratios are: La:0.1%, Co:0.2%, talcum powder: 4%.
The preparation method of above-mentioned ferrite NULL, the steps include:
The first step, the molar ratio ingredient by following component and content: Fe
2o
3: 53%, BaO:22%, SrO:25%, add micro-additive in addition, described micro-additive and described three kinds of main component weight sum mol ratios are: La:0.1%, Co:0.2%, talcum powder: 4%, then mix.
Second step, ball milling: by the first step gained material powder ball milling 1.5 hours in ball mill, make material powder particles even;
3rd step, slurrying pressed compact, adds water second step gained material powder and stirs into slurry, take hydropress pressed compact, in pressed compact process, carry out magnetic field orientating to slurry; In orientation process, particle is in the state of pine dress completely.
4th step, sintering: the 3rd step gained blank is burnt 8 hours in about 780 DEG C stoves; Fire 1 hour for 1000 DEG C; Again by 100 DEG C/h of coolings 4 hours, close stove Temperature fall, form ferrite magnetic isolation board.
Technique effect of the present invention:
According to the ferrite NULL that above-mentioned three kinds of embodiments are obtained, get that the wide * of the long * of magnetic isolation board is thick is of a size of 50*30*3 centimetre, then magnet is placed in both sides, and when not placing magnetic isolation board of the present invention, recording magneticstrength is 110 Gausses;
Place the present embodiment 1 gained magnetic isolation board, detecting magneticstrength is 100 Gausses; Parallel placement two panels magnetic isolation board, detecting magneticstrength is 96 Gausses;
Place the present embodiment 2 gained magnetic isolation board, detecting magneticstrength is 98 Gausses; Parallel placement two panels magnetic isolation board, detecting magneticstrength is 93 Gausses;
Place the present embodiment 3 gained magnetic isolation board, detecting magneticstrength is 95 Gausses; Parallel placement two panels magnetic isolation board, detecting magneticstrength is 90 Gausses.
As can be seen from the above data, NULL of the present invention have about 10% every magnetic effect.
In sum, above-mentioned embodiment is not restricted embodiment of the present invention, and the modification that all those skilled in the art carry out on the basis of flesh and blood of the present invention or equivalent deformation, all at technology category of the present invention.
Claims (8)
1. a ferrite NULL, comprises main component Fe
2o
3,baO, SrO and micro-additive, is characterized in that: the mol ratio of described main component content is, Fe
2o
3: 50-55%, BaO:20-25%, SrO:22-28%, described micro-additive is one or more in following composition, and with described three kinds of main component weight sum mol ratios is: La:0.08-0.20%, Co:0.15-0.30%, talcum powder: 3-8%.
2. a kind of ferrite NULL as claimed in claim 1, is characterized in that: the mol ratio of described main component content is Fe
2o
3: 51-53%, BaO:21-24%, SrO:23-25%.
3. a kind of ferrite NULL as claimed in claim 1 or 2, is characterized in that: the mol ratio of described main component content is Fe
2o
3: 53%, BaO:22%, SrO:25%.
4. a kind of ferrite NULL as claimed in claim 1, is characterized in that: described micro-additive and main component weight sum mol ratio are La:0.10-0.15%, Co:0.18-0.25%, talcum powder: 4-6%.
5. a kind of ferrite NULL as claimed in claim 1, is characterized in that: described micro-additive and main component weight sum mol ratio are La:0.1%, Co:0.2%, talcum powder: 5%.
6. a kind of ferrite NULL preparation method as claimed in claim 1, is characterized in that: comprise following preparation process:
The first step, batching: the mol ratio taking main component content: Fe
2o
3: 50-55%, BaO:20-25%, SrO:22-28%, described micro-additive is one or more in following composition, and with described three kinds of main component weight sum mol ratios is: La:0.08-0.20%, Co:0.15-0.30%, talcum powder: 3-8%; Then mix;
Second step, ball milling: by the first step gained material powder ball milling 1-2 hour in ball mill, make material powder particles even;
3rd step, slurrying pressed compact, adds water second step gained material powder and stirs into slurry, take hydropress pressed compact, in pressed compact process, carry out magnetic field orientating to slurry;
4th step, sintering: the 3rd step gained blank is burnt 7-10 hour in about 780 DEG C stoves; Fire 1-3 hour for 780-1020 DEG C; When pressing 100-120 DEG C/h of cooling 4-6 again, close stove Temperature fall, form ferrite NULL.
7. a kind of ferrite NULL preparation method as claimed in claim 6, is characterized in that: described magnetic field orientating carries out magnetic field orientating under powder granule is in the state that pine fills completely.
8. a kind of ferrite NULL as described in claim 1 or 6, is characterized in that: described ferrite NULL, and the plastics for magnetic power apparatus, magnetic switch, anti-electromagnetic radiation add filler, motor magnetic circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196126.5A CN104876563B (en) | 2015-04-23 | 2015-04-23 | A kind of ferrite NULL |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196126.5A CN104876563B (en) | 2015-04-23 | 2015-04-23 | A kind of ferrite NULL |
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| Publication Number | Publication Date |
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| CN104876563A true CN104876563A (en) | 2015-09-02 |
| CN104876563B CN104876563B (en) | 2018-02-06 |
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ID=53944286
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| CN201510196126.5A Expired - Fee Related CN104876563B (en) | 2015-04-23 | 2015-04-23 | A kind of ferrite NULL |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105142048A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Loudspeaker system |
| CN105142049A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Loudspeaker box |
| CN105142066A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Vibration reduction loudspeaker box system |
| CN105163229A (en) * | 2015-09-25 | 2015-12-16 | 宁波中荣声学科技有限公司 | Vibration-damping sound box |
| CN105163230A (en) * | 2015-09-25 | 2015-12-16 | 宁波中荣声学科技有限公司 | Vibration attenuation sound box |
| CN105245982A (en) * | 2015-09-25 | 2016-01-13 | 宁波中荣声学科技有限公司 | Vibration-reducing loudspeaker box system |
| CN105837193A (en) * | 2016-03-14 | 2016-08-10 | 安徽天宇磁业有限公司 | Ferrite and preparation method thereof |
| CN107564654A (en) * | 2017-09-15 | 2018-01-09 | 安徽信息工程学院 | A kind of inorganic composite materials IV for magnetic composite and preparation method thereof |
| CN107564652A (en) * | 2017-09-15 | 2018-01-09 | 安徽信息工程学院 | A kind of inorganic composite materials IV for permanent-magnet material and preparation method thereof |
| CN108539941A (en) * | 2018-05-23 | 2018-09-14 | 安徽机电职业技术学院 | A kind of preparation method of magnetic force variable speed permanent magnetism motor and its magnetism-isolating loop |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496452A (en) * | 2014-12-31 | 2015-04-08 | 北矿磁材科技股份有限公司 | Ferrite preparation method and prepared ferrite thereby |
-
2015
- 2015-04-23 CN CN201510196126.5A patent/CN104876563B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496452A (en) * | 2014-12-31 | 2015-04-08 | 北矿磁材科技股份有限公司 | Ferrite preparation method and prepared ferrite thereby |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163229B (en) * | 2015-09-25 | 2018-08-24 | 宁波中荣声学科技有限公司 | Vibration-damping speaker |
| CN105163230A (en) * | 2015-09-25 | 2015-12-16 | 宁波中荣声学科技有限公司 | Vibration attenuation sound box |
| CN105142048B (en) * | 2015-09-25 | 2018-08-24 | 宁波中荣声学科技有限公司 | A kind of sound box system |
| CN105163229A (en) * | 2015-09-25 | 2015-12-16 | 宁波中荣声学科技有限公司 | Vibration-damping sound box |
| CN105142066B (en) * | 2015-09-25 | 2018-04-10 | 宁波中荣声学科技有限公司 | Vibration-damping speaker system |
| CN105245982A (en) * | 2015-09-25 | 2016-01-13 | 宁波中荣声学科技有限公司 | Vibration-reducing loudspeaker box system |
| CN105163230B (en) * | 2015-09-25 | 2018-08-24 | 宁波中荣声学科技有限公司 | A kind of vibration-damping speaker |
| CN105142049B (en) * | 2015-09-25 | 2018-04-10 | 宁波中荣声学科技有限公司 | A kind of audio amplifier |
| CN105142066A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Vibration reduction loudspeaker box system |
| CN105142049A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Loudspeaker box |
| CN105142048A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Loudspeaker system |
| CN105245982B (en) * | 2015-09-25 | 2018-08-24 | 宁波中荣声学科技有限公司 | A kind of vibration-damping speaker system |
| CN105837193A (en) * | 2016-03-14 | 2016-08-10 | 安徽天宇磁业有限公司 | Ferrite and preparation method thereof |
| CN107564654A (en) * | 2017-09-15 | 2018-01-09 | 安徽信息工程学院 | A kind of inorganic composite materials IV for magnetic composite and preparation method thereof |
| CN107564652A (en) * | 2017-09-15 | 2018-01-09 | 安徽信息工程学院 | A kind of inorganic composite materials IV for permanent-magnet material and preparation method thereof |
| CN108539941A (en) * | 2018-05-23 | 2018-09-14 | 安徽机电职业技术学院 | A kind of preparation method of magnetic force variable speed permanent magnetism motor and its magnetism-isolating loop |
| CN108539941B (en) * | 2018-05-23 | 2022-12-20 | 安徽机电职业技术学院 | Preparation method of magnetism isolating ring of magnetic variable-speed permanent magnet motor |
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| CN104876563B (en) | 2018-02-06 |
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