CN101183584A - MnZn ferrite material and magnetic core for energy-saving lamp and electronic ballast - Google Patents
MnZn ferrite material and magnetic core for energy-saving lamp and electronic ballast Download PDFInfo
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- CN101183584A CN101183584A CNA2006101470546A CN200610147054A CN101183584A CN 101183584 A CN101183584 A CN 101183584A CN A2006101470546 A CNA2006101470546 A CN A2006101470546A CN 200610147054 A CN200610147054 A CN 200610147054A CN 101183584 A CN101183584 A CN 101183584A
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- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 title claims abstract description 20
- 230000004907 flux Effects 0.000 claims description 14
- 239000000470 constituent Substances 0.000 claims description 12
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000005338 frosted glass Substances 0.000 description 10
- 239000004615 ingredient Substances 0.000 description 10
- 239000011236 particulate material Substances 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 238000005303 weighing Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 7
- 238000005286 illumination Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 238000000498 ball milling Methods 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000002270 dispersing agent Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 238000001694 spray drying Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910006404 SnO 2 Inorganic materials 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000002075 main ingredient Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- -1 WO 3 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013409 condiments Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
The invention relates to a MnZn soft magnetic ferrite material and a magnetic core for an integrated energy-saving lamp and an electronic ballast, wherein the main component of the soft magnetic ferrite material is Fe with the mol percent of 49-532O3And 34-40 mol% of MnO, and the balance of ZnO. Adding CaCO as the first sub-component to the main component3A second subcomponent SiO2、WO3One or two or a third subcomponent SnO2、TiO2、Nb2O5、V2O5One, but not limited to, CoO. The MnZn soft magnetic ferrite magnetic core can be used in the fields of integrated energy-saving lamps, electronic ballast devices and the like.
Description
Technical field
The present invention relates to technical field of electronic materials, more specifically relate to the ferrite magnetic material that is used for electricity-saving lamp and electric ballast and association area thereof.
Background technology
In normal lighting, often use incandescent lamp and inductance type ballast fluorescent lamp.But these two kinds of illuminations have its shortcoming: incandescent lamp is mainly luminous by the heating tungsten filament, and 90% of electric energy is used for producing unwanted heat, has only 10% the Conversion of energy luminous energy for needs, obtains the energy consumption height of unit luminous flux; For the inductance type ballast fluorescent lamp, inductance type ballast expend a large amount of copper materials, volume big and heavy, also can produce the noise of people's ear audible, nearly 1/4 of electric energy is consumed by inductance type ballast, the luminous efficiency of electric energy is low.
Based on the above shortcoming of traditional lighting instrument, integrated energy-saving lamp and electric ballast replace incandescent lamp, inductance type ballast just becomes the representative that green lighting technique is risen.The luminous efficiency of integrated energy-saving lamp is nearly 5 times of incandescent lamp, and weight, the amount of copper consuming of electric ballast obviously reduce, and energy consumption is also less than 1/10 of inductance type ballast.
No matter be integrated energy-saving lamp, or electric ballast, all need the civil power of power frequency is converted into high-frequency current by special circuit.In conversion circuit, all need to use pulse transformer, the in turn conducting that comes the power controlling switching tube with pulse transformer with close.And pulse transformer must be used magnetic core, and the selected soft magnetism power consumption Ferrite Material of this magnetic core should reach following performance requirement:
(1) is suitable for the saturation flux density that electricity-saving lamp is used.In the energy-saving illumination field, direct current is converted into high-frequency current closes in turn with conducting " cutting " direct current by switching tube and realize.If the saturation flux density of magnetic core is too high, may cause the undersaturation of pulse transformer to take place, cause that switching tube can not in time close and conducting, make that the lamp operating current increases, the switching tube heating increases, cause when serious that a series of unfavorable conditions such as " burning machines " occur; If the saturation flux density of magnetic core is low excessively, then pulse transformer can be saturated soon, can cause that the switching tube operating frequency accelerates, with a series of improper phenomenons such as other electron component mismatch.
(2) Curie temperature height.In integrated energy-saving lamp or various electric ballast, some elements in the course of the work can the evolution of heat, makes that near the temperature the pulse transformer raises.Generally can reach 80～120 ℃, hot localised points even can reach more than 120 ℃.μ-T curve of considering magnetic material has jumping phenomenon near Curie temperature, require the Curie temperature of magnetic core part to be not less than 140 ℃ in the general energy-saving illumination, not even less than 180 ℃.
(3) power loss is low.The power loss of magnetic core part is low more, and caloric value is more little, and reliability is high more, and is energy-conservation more, and this also is the important feature of high-quality magnetic material.
(4) inductance value temperature curve and switching tube are complementary.If the magnetic permeability of magnetic core is a bigger positive temperature coefficient, that is to say that along with the rising of temperature, it is big that magnetic permeability becomes.Like this, superimposed with the positive temperature characterisitic of switching tube, can make the operating current of lamp become bigger, lamp power is higher, can make operating ambient temperature higher again, and this is a vicious circle.If the magnetic core in the pulse transformer is little positive temperature coefficient or negative temperature coefficient, the rough sledding that the lamp operating current is risen with temperature is alleviated or compensation is revised.
The used magnetic core of current electricity-saving lamp and electric ballast, generally select for use the higher relatively high μ material of common soft magnetism power consumption Ferrite Material or Curie temperature to make, because these materials not for electricity-saving lamp or electric ballast carry out special design optimization, are difficult to reach simultaneously above-mentioned performance requirement.As propose the MnZn ferrite of a kind of main prescription through optimizing in patent application CN02138280.8, its Main Ingredients and Appearance is 52～55mol% Fe
2O
3The MnO of 36～38mol%; The ZnO of 7～12mol%, and adopt nano-scale oxide as additive.This invention obtains lower power loss 260KW/m
3(100 ℃, 100kHz, 200mT) and higher saturation flux density 425mT (100 ℃), this invention will be added nano level superfine oxide as additive, can increase material cost to a certain extent; In addition, the saturation flux density in the time of its 100 ℃ is higher, in integrated energy-saving lamp or electric ballast, Bs is not high more good more, if be not complementary with circuit, will bring the generation of pulsed drive magnetic core of transformer " undersaturation " phenomenon, can not the driven switching tube in time close or conducting.In patent application CN 200510033614.0, propose at main formula Mn
0.629Zn
0.30Fe
2.071O
4An amount of V of middle interpolation
2O
5, CoO, Bi
2O
3Deng additive, prepare low-loss MnZn soft magnetic ferrite, its Curie temperature is about about 200 ℃, and saturation flux density is up to 500mT, but also there is the higher problem of saturation flux density in it, is not the material that is well suited for as the energy-saving illumination field.
Summary of the invention
The present invention is directed to above problem, adopt preferred prescription and suitable additive, design a kind of MnZn soft magnetic ferrite that integrated energy-saving lamp and electric ballast and association area thereof are used that is suitable for.
For achieving the above object, the present invention takes following technical scheme:
Adopt corresponding oxide raw material to prepare a kind of MnZn series soft magnetic ferrite material, principal crystalline phase is the spinelle phase, and its main component prescription is:
Fe
2O
3：49～53mol％
MnO：34～40mol％
Its surplus is ZnO.
The auxiliary composition that adds has:
The first accessory constituent CaCO
3, addition 50-800ppm
Second accessory constituent contains SiO
2, WO
3In one or both, the interpolation total amount is 50-400ppm
The 3rd accessory constituent contains SnO
2, TiO
2, Nb
2O
5, V
2O
5, at least a among the CoO, the interpolation total amount is 310-6200ppm.
In the above-mentioned MnZn soft magnetic ferrite prescription, Fe
2O
3Can be preferably 50～52.7mol%, MnO is preferably 37.6～40mol%;
Additive in the above-mentioned Main Ingredients and Appearance can be preferably:
The first accessory constituent CaCO
3, addition 300-600ppm is (with CaCO
3Meter)
Second accessory constituent contains SiO
2, WO
3In one or both, the interpolation total amount is 80-200ppm
The 3rd accessory constituent contains SnO
2, TiO
2, Nb
2O
5, V
2O
5, at least a among the CoO, add total amount 2000-4500ppm.
The invention provides a kind of MnZn magnetic ferrite magnetic core, it should be used as optimization at energy-saving illumination and ballast field specially, has following performance:
(1) is suitable for the saturation flux density that electricity-saving lamp and ballast are used.At 1kHz, to test under the condition of 550A/m, saturation flux density is 400 ± 20mT in the time of 25 ℃; In the time of 100 ℃ 320 ± 20mT.
(2) Curie temperature is not less than 220 ℃.Require the Curie temperature of magnetic core part to be not less than 140 ℃ in the general energy-saving illumination, requiring higher is 180 ℃, and the material that the present invention is prepared and the Curie temperature of magnetic core can reach more than 220 ℃.
(3) power loss is low.Under 25kHz, 200mT test condition, power loss is not more than 90kW/m in the time of 100 ℃
3In the time of 120 ℃, be not more than 85kW/m
3(as shown in Figure 1).
(4) the inductance value temperature curve that is complementary with switching tube.As shown in Figure 2, in 50 ℃ of-120 ℃ of scopes, the magnetic core of pulse transformer is a negative temperature coefficient.
The invention provides a kind of MnZn magnetic ferrite magnetic core that electricity-saving lamp and electric ballast and association area thereof are used that is suitable for, this magnetic core adopts described MnZn Ferrite Material to make, and is generally ring-type but is not limited only to ring-type, as be excellent type, E type, U type etc.This magnetic core can be used for but is not limited only to integrated energy-saving lamp and electronics suppression stream device, also can be used for as association areas such as choke, electronic transformer, power inductances.
The present invention compared with prior art has following beneficial effect:
All raw materials all adopt common oxide, and production cost is lower, help producing in batches.
Because MnZn ferrite material material formula condiments is optimized,, magnetic core of transformer is operated under 50 ℃ of-120 ℃ of temperature has suitable magnetic flux density and lower loss as the suitable scope (2.0-5.0) of control Mn/Zn mol ratio.
CaCO
3, SiO
2, WO
3, SnO
2, TiO
2, Nb
2O
5, V
2O
5, oxide such as CoO adding changed the microstructure of material, reduced the size of crystal grain, improved resistivity, reduce the eddy current loss of FERRITE CORE.
Mix high valence elements, can make Fe
2+Amount increases, and lowest loss point moves to the low temperature direction; Mix element at a low price, can make Fe
2+Amount increases, and lowest loss point moves to the low temperature direction.Therefore, the present invention can regulate the minimum temperature of power loss easily by the selection of blast blending.
MnZn Ferrite Material of the present invention is applicable to applications such as integrated energy-saving lamp and electric ballast, can be used for the driving switch pipe take turns conducting with close.
Description of drawings
The graph of a relation of Fig. 1 power loss and temperature
The graph of a relation of Fig. 2 magnetic permeability and temperature
Following embodiment is with bright embodiment of the present invention for instance, therefore, should not constitute limitation of the scope of the invention.
Embodiment
Embodiment 1
By prescription Fe
2O
3: MnO: ZnO=51.2: 39.5: 9.3mol%, taking by weighing three kinds of raw materials drops in the agitator tank, and the dispersant of adding 10wt% and the deionized water of 45wt%, stirring and evenly mixing 30 minutes, be evacuated in the ball mill, the concentration that adds the 10wt% ingredients by weight is 9% PVA solution, grinds after 3 hours, carries out spray drying.The red powder that drying is good pre-burning 1 hour under 700～1000 ℃ temperature obtains pre-imitation frosted glass.Take by weighing pre-imitation frosted glass and add in the ball mill, by weight the SiO that adds 100ppm, 500ppm, 600ppm, 2000ppm respectively
2, CaCO
3, V
2O
5, TiO
2Auxiliary small powder, and the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, ball milling 5 hours, mist projection granulating obtains particulate material.Is 29.6mm with press with particulate material material compacting external diameter, and internal diameter is 17.8mm, and thickness is the annular green compact of 8.9mm.Annular green compact are placed under 1340 ℃ the temperature heat preservation sintering 4 hours, and obtained toroidal core.
Under 25 ℃ and 100kHz condition, measure the power loss of various magnet rings; The saturation flux density of the various magnet rings of test under 1kHz and 550A/m condition; And test the Curie temperature T of various magnet rings
cIts test result is listed in table 1.
From table 1. as can be seen, prepared various magnet rings have high Curie temperature (T
C=226 ℃), moderate saturation flux density (25 ℃, B
s=405; 100 ℃, B
s=326), lower power loss (25 ℃, P
Cv=161; 120 ℃, P
Cv=79), and the magnetic permeability of this magnetic core is negative temperature coefficient at 25 ℃-120 ℃, can be applicable in integrated energy-saving etc. and applications such as electric ballast.
Embodiment 2
By prescription Fe
2O
3: MnO: ZnO=51.0: 39.6: 9.4mol%, taking by weighing three kinds of raw materials drops in the agitator tank, and the dispersant of adding 10wt% and the deionized water of 45wt%, stirring and evenly mixing 30 minutes, be evacuated in the ball mill, the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, grinds after 3 hours, carries out spray drying.The red powder that drying is good pre-burning 1.5 hours under 700～1000 ℃ temperature obtains pre-imitation frosted glass.Take by weighing pre-imitation frosted glass and add in the ball mill, by weight the SiO that adds 100ppm, 600ppm, 3000ppm, 800ppm respectively
2, CaCO
3, SnO
2, Nb
2O
5Auxiliary small powder, and the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, ball milling 5 hours, mist projection granulating obtains particulate material.With press particulate material being suppressed external diameter is 29.6mm, and internal diameter is 17.8mm, and thickness is the annular green compact of 8.9mm.Annular green compact are placed under 1340 ℃ the temperature heat preservation sintering 4 hours, and obtained toroidal core.
Magnetic core is tested every electromagnetic performance lists in the subordinate list 1.As can be seen from Table 1, can draw the conclusion that is similar to embodiment 1.
Embodiment 3
By prescription Fe
2O
3: MnO: ZnO=52.5: 38.6: 8.9mol%, taking by weighing three kinds of raw materials drops in the agitator tank, and the dispersant of adding 10wt% and the deionized water of 45wt%, stirring and evenly mixing 30 minutes, be evacuated in the ball mill, the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, grinds after 3 hours, carries out spray drying.The red powder that drying is good pre-burning 1.5 hours under 700～1000 ℃ temperature obtains pre-imitation frosted glass.Take by weighing pre-imitation frosted glass and add in the ball mill, by weight the SiO that adds 80ppm, 600ppm, 3000ppm respectively
2, CaCO
3, the auxiliary small powder of CoO, and the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, ball milling 5 hours, mist projection granulating obtains particulate material.With press particulate material being suppressed external diameter is 29.6mm, and internal diameter is 17.8mm, and thickness is the annular green compact of 8.9mm.Annular green compact are placed under 1340 ℃ the temperature heat preservation sintering 4 hours, and obtained toroidal core.
Magnetic core is tested every electromagnetic performance list in subordinate list 1.As can be seen from Table 1, can draw the conclusion that is similar to embodiment 1.
Embodiment 4
By prescription Fe
2O
3: MnO: ZnO=52.7: 37.6: 9.7mol%, taking by weighing three kinds of raw materials drops in the agitator tank, and the dispersant of adding 10wt% and the deionized water of 45wt%, stirring and evenly mixing 30 minutes, be evacuated in the ball mill, the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, grinds after 3 hours, carries out spray drying.The red powder that drying is good pre-burning 1.5 hours under 700～1000 ℃ temperature obtains pre-imitation frosted glass.Take by weighing pre-imitation frosted glass and add in the ball mill, by weight the WO that adds 80ppm, 600ppm, 3000ppm respectively
3, CaCO
3, the auxiliary small powder of CoO, and the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, ball milling 5 hours, mist projection granulating obtains particulate material.With press particulate material being suppressed external diameter is 29.6mm, and internal diameter is 17.8mm, and thickness is the annular green compact of 8.9mm.Annular green compact are placed under 1340 ℃ the temperature heat preservation sintering 4 hours, and obtained toroidal core.
Magnetic core is tested every electromagnetic performance list in subordinate list 1.As can be seen from Table 1, can draw the conclusion that is similar to embodiment 1.
Embodiment 5
By prescription Fe
2O
3: MnO: ZnO=52.7: 37.6: 9.7mol%, taking by weighing three kinds of raw materials drops in the agitator tank, and the dispersant of adding 10wt% and the deionized water of 45wt%, stirring and evenly mixing 30 minutes, be evacuated in the ball mill, the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, grinds after 3 hours, carries out spray drying.The red powder that drying is good pre-burning 1.5 hours under 700～1000 ℃ temperature obtains pre-imitation frosted glass.Take by weighing pre-imitation frosted glass and add in the ball mill, by weight the SiO that adds 120ppm, 600ppm, 700ppm, 2000ppm respectively
2, CaCO
3, Nb
2O
5, the auxiliary small powder of CoO, and the concentration that adds the 10wt% ingredients by weight is 9%PVA solution, ball milling 5 hours, mist projection granulating obtains particulate material.With press particulate material being suppressed external diameter is 29.6mm, and internal diameter is 17.8mm, and thickness is the annular green compact of 8.9mm.Annular green compact are placed under 1340 ℃ the temperature heat preservation sintering 4 hours, and obtained toroidal core.
Magnetic core is tested every electromagnetic performance list in subordinate list 1.As can be seen from Table 1, can draw the conclusion that is similar to embodiment 1.
Table 1
Claims (6)
1. MnZn series soft magnetic ferrite material, its principal component is the Fe of 49～53mol%
2O
3With the MnO of 34～40mol%, its surplus is ZnO; In principal component, add the 50-800ppm first accessory constituent CaCO by weight
3, the 50-400ppm second accessory constituent SiO by weight
2, WO
3In one or both, 310-6200ppm the 3rd accessory constituent SnO by weight
2, TiO
2, Nb
2O
5, V
2O
5, at least a among the CoO.
2. MnZn soft magnetic ferrite according to claim 1, wherein, described principal component Fe
2O
3Content is 51～52.7mol%, and MnO content is 37.6～40mol%.
3. MnZn soft magnetic ferrite according to claim 1 wherein, adds the 300-600ppm first accessory constituent CaCO by weight in principal component
3, the 80-200ppm second accessory constituent SiO by weight
2, WO
3In one or both, 2000-4500ppm the 3rd accessory constituent SnO by weight
2, TiO
2, Nb
2O
5, V
2O
5, at least a among the CoO.
4. according to each MnZn soft magnetic ferrite among the claim 1-3, wherein, its performance is: at 1kHz, test under the condition of 550A/m, saturation flux density is 400 ± 20mT in the time of 25 ℃, is 320 ± 20mT in the time of 100 ℃; Curie temperature is not less than 220 ℃; Under 25kHz, 200mT test condition, the low 90kW/m that is not more than of power loss in the time of 100 ℃
3, be not more than 85kW/m in the time of 120 ℃
3
5. MnZn magnetic ferrite magnetic core, wherein, described magnetic core adopts and makes as the described MnZn soft magnetic ferrite of claim 1-4, and magnetic core is ring-type, excellent type, E type or U type.
6. electricity-saving lamp or electric ballast wherein, include the described MnZn magnetic ferrite magnetic core of claim 5.
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|---|---|---|---|
| CNA2006101470546A CN101183584A (en) | 2006-11-13 | 2006-11-13 | MnZn ferrite material and magnetic core for energy-saving lamp and electronic ballast |
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|---|---|---|---|
| CNA2006101470546A CN101183584A (en) | 2006-11-13 | 2006-11-13 | MnZn ferrite material and magnetic core for energy-saving lamp and electronic ballast |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694801B (en) * | 2009-09-22 | 2012-04-25 | 福建省福晶磁性材料有限公司 | Novel high performance magnetic material for energy-saving lamps |
| CN104163624A (en) * | 2014-08-18 | 2014-11-26 | 无锡斯贝尔磁性材料有限公司 | Production method of high-Q-value manganese-zinc ferrite powder |
| CN104593666A (en) * | 2015-01-09 | 2015-05-06 | 梁玲 | Preparation method of lanthanum-doped iron-cobalt-base soft magnetic material |
| CN104817317A (en) * | 2015-04-14 | 2015-08-05 | 安徽祈艾特电子科技有限公司 | Good-flexibility nonperishable soft-magnetic ferrite material and preparation method thereof |
| CN108059451A (en) * | 2017-12-07 | 2018-05-22 | 天长市昭田磁电科技有限公司 | A kind of high frequency power soft magnetic ferrite and preparation method thereof |
| CN109704749A (en) * | 2019-02-12 | 2019-05-03 | 湖北华磁电子科技有限公司 | The preparation method and application of hyperfrequency low loss soft magnetic ferrite material and magnetic core |
| CN112358289A (en) * | 2020-11-12 | 2021-02-12 | 南通三优佳磁业有限公司 | Preparation method of manganese-zinc ferrite material for power supply |
-
2006
- 2006-11-13 CN CNA2006101470546A patent/CN101183584A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694801B (en) * | 2009-09-22 | 2012-04-25 | 福建省福晶磁性材料有限公司 | Novel high performance magnetic material for energy-saving lamps |
| CN104163624A (en) * | 2014-08-18 | 2014-11-26 | 无锡斯贝尔磁性材料有限公司 | Production method of high-Q-value manganese-zinc ferrite powder |
| CN104593666A (en) * | 2015-01-09 | 2015-05-06 | 梁玲 | Preparation method of lanthanum-doped iron-cobalt-base soft magnetic material |
| CN104817317A (en) * | 2015-04-14 | 2015-08-05 | 安徽祈艾特电子科技有限公司 | Good-flexibility nonperishable soft-magnetic ferrite material and preparation method thereof |
| CN108059451A (en) * | 2017-12-07 | 2018-05-22 | 天长市昭田磁电科技有限公司 | A kind of high frequency power soft magnetic ferrite and preparation method thereof |
| CN109704749A (en) * | 2019-02-12 | 2019-05-03 | 湖北华磁电子科技有限公司 | The preparation method and application of hyperfrequency low loss soft magnetic ferrite material and magnetic core |
| CN112358289A (en) * | 2020-11-12 | 2021-02-12 | 南通三优佳磁业有限公司 | Preparation method of manganese-zinc ferrite material for power supply |
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Application publication date: 20080521 |