CN103214233A - High Tc, wide temperature ultrahigh Bs MnZn ferrite material and preparation method - Google Patents
High Tc, wide temperature ultrahigh Bs MnZn ferrite material and preparation method Download PDFInfo
- Publication number
- CN103214233A CN103214233A CN2013100922739A CN201310092273A CN103214233A CN 103214233 A CN103214233 A CN 103214233A CN 2013100922739 A CN2013100922739 A CN 2013100922739A CN 201310092273 A CN201310092273 A CN 201310092273A CN 103214233 A CN103214233 A CN 103214233A
- Authority
- CN
- China
- Prior art keywords
- ferrite material
- mnzn ferrite
- temperature
- gained
- ball milling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Magnetic Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Belonging to the technical field of ferrite material preparation, the invention relates to a high Tc, wide temperature ultrahigh Bs MnZn ferrite material and a preparation method. The ferrite material provided in the invention is composed of main materials and doping agents. The ferrite material is characterized in that, the main materials include: 58.0-62.0mol% of Fe2O3, 10.0-15.0mol% of ZnO, 4.0-6.0mol% of NiO, and the balance MnO; and by weight percentage, with the pre-sintered main materials as reference and in terms of oxides, the doping agents include: 0.001-0.30wt% of MoO3, 0.01-0.40wt% of Bi2O3, 0.001-0.05wt% of SnO2, 0.001-0.05wt% of Nb2O5, and 0.001-0.20wt% of Ta2O5. The MnZn ferrite material provided in the invention has the characteristics of high Curie temperature (with Tc greater than or equal to 320DEG C), high wide temperature BBs (at 25DEG C, with BBs being greater than or equal to 600mT; at 100DEG C, with BBs being greater than or equal to 490mT), and low loss (100DEG C, 100kHz200mT, with PL being smaller than or equal to 800kW/m<3>), etc.
Description
Technical field
Present technique belongs to the Ferrite Material preparing technical field, particularly high-curie temperature (T
c), wide temperature super-high saturated magnetic flux density (BB
s) the MnZn Ferrite Material and preparation method thereof.
Background technology
The stable working temperature of switching mode power supply transformer magnetic core is under 80 ℃-120 ℃ high temperature.Under hot conditions, the BBs of Ferrite Material is than there being one significantly to descend under the normal temperature.Simultaneously, many electronic devices and components such as HID lamp ballast, power supply on vehicle magnetic cores etc. that are applied under the big current condition of high temperature need to satisfy at least: (1) can export enough big power, and (2) can bear the big electric current of temporary impact when starting.Reach the performance that this requires to depend on to a great extent ferrite magnetic material.Because high output rating means big electric current output, if the electric current of coil is excessive, then may cause the magnetic core magnetization to saturated, thereby its magnetic conduction ability (inductance value) is descended, the inductance value of magnetic core can be increased to a maximum value earlier along with the increase of magnetizing current in the coil, descends then, and this moment, magnetic core just " saturated ", and to make the electron device works better, the subtracting of magnetic core inductance value falls must be less than a definite value.Under big electric current, if the BB of magnetic core
sBe worth highly more, its antisaturation ability is just strong more, inductance value subtract fall just more little.Simultaneously, the power consumption of material is unsuitable too high, if the power consumption height of magnetic core self, magnetic spare heating itself is increased, and energy transmission efficiency reduces, in case working temperature is higher than the power consumption valley point, can cause temperature to raise, the loss of magnetic core is big more, forms the higher vicious cycle of magnetic spare temperature, and then influences the works better of device.In addition, though metal soft magnetic material has higher saturation induction density, its cost is higher, resistivity is lower, and its erosion resistance is relatively poor, does not satisfy the original intention of design high-performance and low-cost, low-loss material.It should be noted that, high Curie temperature is the essential condition that magnetic device is worked in wide temperature range, especially the limited occasion of heat-dissipating space, the reliability what is more important that improves magnetic device and electronic system can guarantee that material has high BB in wide temperature range
sAnd high BB
sThen can improve the current load amount of electronic system, improve power density, realize miniaturization, therefore, develop a kind of high-curie temperature, wide temperature superelevation BB of having concurrently
sThe MnZn Ferrite Material of characteristic has boundless market application foreground.
In recent years, high-curie temperature (T
c), wide temperature high saturated magnetic induction (BB
s) power ferrite material become the focus that magnetic material industry is paid close attention to.In the disclosed patent CN1294099A of China, the high BB of a kind of high temperature is disclosed
sPower ferrite material, it replaces the BB that MnO improves material by NiO
sBut, the BB under its 100 ℃, 1194A/m
sOnly be 440mT.Patent CN101090016A has announced that a kind of mode by temperature rate, soaking time and oxygen partial pressure size in the adjusting sintering process reaches raising material B B
sPurpose, the BB under its 100 ℃, 1194A/m
sReach 450mT, still less.Patent CN101429016A discloses a kind of MnZn power ferrite material, and its Curie temperature is 280 ℃, the BB under 100 ℃, 1194A/m
sBeing 460mT, is T in the current material
cAnd BB
sAll higher material has the stronger market competitiveness.A kind of high temperature superelevation BB is disclosed among the patent CN1890197A
sThe MnZn power ferrite material, its main formula is: Fe
2O
3: 63-80mol%, ZnO:3-15mol%, surplus is MnO, ancillary component comprises CaO, SiO
2, be incubated 8 hours down at 1175 ℃.The Ferrite Material performance that obtains is: under 100 ℃, and BB
sBe 520mT, but its loss is too high, at 50kHz, the loss under the 150mT is up to 1100kW/m
3In addition, the MB1H magneticsubstance that JFE company releases, the BB under its 25 ℃ and 100 ℃
sBe respectively 540mT and 460mT, Curie temperature is 300 ℃.The 4H47 material of FDK company, the BB under its 25 ℃ and 100 ℃
sBe respectively 530mT and 470mT, Curie temperature is about 200 ℃.The BH7 material that NEC/TOKIN company releases, the BB under its 25 ℃ and 100 ℃
sBe respectively 600mT and 490mT, 100 ℃, the loss of 100kHz200mT are up to 1350kW/m
3The BM40 material of NICERA company, the BB under its 25 ℃ and 100 ℃
sBe respectively 530mT and 470mT, Curie temperature is up to 300 ℃.
Summary of the invention
Technical problem to be solved by this invention is that a kind of high T is provided
c, wide temperature superelevation Bs MnZn Ferrite Material and preparation method, its material has high-curie temperature (T
c〉=320 ℃), the high BB of wide temperature
s(25 ℃, BB
s〉=600mT; 100 ℃, BB
s〉=490mT) reach than low-loss (100 ℃, 100kHz200mT, PL≤800kW/m
3) etc. characteristic.
The technical scheme that the present invention solve the technical problem employing is high T
c, wide temperature superelevation Bs MnZn Ferrite Material, form by major ingredient and doping agent, it is characterized in that major ingredient comprises:
58.0-62.0mol%Fe
2O
3, 10.0-15.0mol%ZnO, 4.0-6.0mol%NiO, surplus is MnO;
By weight percentage, and be reference data, calculate that doping agent comprises: 0.001-0.30wt%MoO with oxide compound with the major ingredient after the pre-burning
3, 0.01-0.40wt%Bi
2O
3, 0.001-0.05wt%SnO
2, 0.001-0.05wt%Nb
2O
5, 0.001-0.20wt%Ta
2O
5
High T of the present invention
c, wide temperature superelevation Bs MnZn Ferrite Material the preparation method may further comprise the steps:
1) prescription
Adopt 58.0-62.0mol%Fe
2O
3, 10.0-15.0mol%ZnO, 4.0-6.0mol%NiO, surplus is MnO;
2) ball milling
The material powder of above prescription is mixed ball milling;
3) pre-burning
With step 2) oven dry of gained ball milling material, under 60-100MPa, suppress, and at 800-1000 ℃ of pre-burning 1-3 hour;
4) mix
Step 3) gained material powder is added following doping agent: 0.001-0.30wt%MoO by weight
3, 0.01-0.40wt%Bi
2O
3, 0.001-0.05wt%SnO
2, 0.001-0.05wt%Nb
2O
5, 0.001-0.20wt%Ta
2O
5Described weight ratio is a doping agent: the material powder.
5) secondary ball milling
With the material powder that obtains in the step 4) in ball mill ball milling 4-8 hour;
6) moulding
Step 5) gained material powder is added the 8-12wt% organic binder bond by weight, and mixing after the granulation, is pressed into blank with granular powder on press;
7) sintering
Step 6) gained blank is placed sintering in the atmosphere sintering furnace.
Described step 7) is: step 6) gained blank is placed sintering in the atmosphere sintering furnace, at 1000 ℃ of-1300 ℃ of temperature sections, volume ratio O
2/ N
2=1/999; At 1300 ℃ of-1400 ℃ of temperature sections, O
2/ N
2=4/96, be incubated 4-6 hour; Carry out the balanced atmosphere sintering at temperature descending section.
8) test
Step 7) gained sample is carried out the electromagnetic performance test.
With inductance L, suitably adjust coiling both end voltage value U with the accurate LCR tester of favour TH2828 specimen
sIt is satisfied: U
s=4.44NfA
eB, the initial permeability of sample is calculated according to following formula:
Wherein L is the inductance of sample, and N is a number of turns, and h is a thickness of sample, and D is the sample external diameter, and d is the sample internal diameter, A
eNet sectional area for sample.Test condition is: frequency f=10kHz, magnetic induction density B≤0.25mT.Draw μ in conjunction with temperature control box
i-T graphic representation uses epitaxial method to determine Curie temperature T
c
With the magnetic hysteresis loop of IWATSU SY-8232B-H analyser specimen, test condition is: f=0.1kHz, H=1200A/m.
With the loss of IWATSU SY-8232B-H analyser specimen, test condition is: f=100kHz, BB
m=200mT, T=25 ℃-120 ℃.
The technology of preparing of MnZn Ferrite Material of the present invention, its technical indicator is as follows:
Initial permeability μ
i: 1500 ± 20%
Saturation induction density BB
s: 〉=600mT(25 ℃); 〉=490mT(100 ℃); 〉=460mT(120 ℃)
Curie temperature T
c: 〉=320 ℃
Loss P
L(100kHz200mT) :≤1100kW/m
3(25 ℃); ≤ 800kW/m
3(100 ℃); ≤ 1000kW/m
3(120 ℃);
Density d m: 〉=5.0g/cm
3
High-curie temperature (Tc 〉=320 ℃), the high BB of wide temperature
s(25 ℃, BB
s〉=600mT; 100 ℃, BB
s〉=490mT) reach than low-loss (100 ℃, 100kHz200mT, P
L≤ 800kW/m
3) etc. characteristic.
Embodiment
The present invention is primarily aimed at the existing high-curie temperature of MnZn ferrite and the high BB of wide temperature of prior art design
sTwo technical barriers that key parameter is difficult to satisfy simultaneously provide a kind of high-curie temperature and high BB of wide temperature of having concurrently
sMnZn Ferrite Material of characteristic and preparation method thereof.
Core concept of the present invention is: adopt the rich iron formula of MnZn ferrite, strengthen magnetic ion quantity in A, B the lattice, the superexchange interaction of strongthener, though can improve the Curie temperature of material, but increased inevitably the magnetocrystalline anisotropy constant of material and magnetostriction coefficient (on the occasion of), increased the magnetization resistance, be unfavorable for improving magnetic permeability and reduce the wastage; Therefore, the present invention adopts an amount of NiO to substitute MnO, on the one hand the NiFe that is formed by NiO
2O
4Ferritic Curie temperature is significantly higher than the MnFe that is formed by MnO
2O
4Ferritic Curie temperature can improve the Curie temperature of material after the replacement, improve the reliability of magnetic device, on the other hand the NiFe that forms of NiO
2O
4Ferritic magnetocrystalline anisotropy constant and magnetostriction coefficient (negative value) are lower than the MnFe that MnO forms
2O
4Ferritic anisotropic crystalline constant and magnetostriction coefficient (negative value) after NiO partly replaces MnO, can form positive and negative compensation with the just magnetization resistance that rich iron partly forms, and then the magnetization resistance is had than low value, can improve magnetic permeability, reduce the wastage.Simultaneously, in prescription, reduce ZnO content as far as possible, and then guarantee that material has high Curie temperature.
On doping agent, adopt MoO
3, Bi
2O
3, SnO
2, Nb
2O
5, Ta
2O
5Fluxing and hinder brilliant two property effects Deng doping agent, realize composite mixed dose of interactive control, improve sintered density on the one hand, improve saturation induction density, reduce the magnetization resistance, improve magnetic permeability, on the other hand, the control grain-size is unsuitable excessive, and the crystal grain of control material/crystal boundary characteristic reduces spillage of material.Aspect sintering process, in conjunction with extraordinary high reactivity submicron powder preparation technology, preparation high reactivity submicron powder by the two property effects of composite additive, is used secondary reduction technology in sintering process, realize the high-density even grained sintering of material.That is: by rich iron formula and Ni replacement technique, strengthen the superexchange interaction of A, B para-crystal compartment, realize the high Curie temperature of MnZn Ferrite Material; The occupy-place of regulation and control magnetic/non magnetic ion in inferior lattice distributes, increase the Net magnetic moment of material, realize the high saturation induction density of material, rely on high-curie temperature, but the temperature variant Brillouin's attenuation characteristic of passivating material saturation induction density is so that material still has high BB when high temperature
sIn conjunction with the effect of two property and the secondary reduction sintering technology of composite additive, the crystal grain of control material/crystal boundary characteristic obtains uniform microstructure, and then improves the magnetic permeability of material, reduces the wastage.
At having high-curie temperature T at present both at home and abroad concurrently
c, wide temperature high saturated magnetic induction BB
sAnd than low-loss P
LThe technological gap and the market requirement of the MnZn Ferrite Material of characteristic the invention provides high T
c, the high BB of wide temperature
sAnd low P
LMnZn Ferrite Material of characteristic and preparation method thereof.Its guiding theory is: strong superexchange interaction, height magnetization power and low magnetization resistance, leading crystal grain/crystal boundary characteristic and the densification sintering technology of even microstructure.At first, by preferred highly purified Fe
2O
3, Mn
3O
4, ZnO and NiO be starting material, in depth analyzed the superexchange interaction, magnetization power and the magnetization resistance that exist in the MnZn Ferrite Material, adopts rich iron, low ZnO, an amount of NiO to replace Mn
3O
4Take thought as the leading factor, formulate optimum formula range; Secondly, analyse in depth the different sorts doping agent, studied doping agent MoO the microstructural interaction mechanism of MnZn Ferrite Material
3, Bi
2O
3, SnO
2, Nb
2O
5, Ta
2O
5Deng influence, formulate optimum doping agent prescription to MnZn Ferrite Material crystal boundary, grain properties; Then, select and prepare by a certain percentage the superhard ball-milling medium of different diameter size for use, dispersion agent ball milling powder to the 0.5 μ m-0.9 μ m in conjunction with suitable has prepared the high reactivity powder; At last, under the prerequisite of above-mentioned prescription, doping agent and powder preparing process optimization,, prepared and had high-curie temperature T in conjunction with densification sintering technology
c, wide temperature high saturated magnetic induction BB
sAnd than low-loss P
LThe MnZn Ferrite Material of characteristic.
MnZn Ferrite Material principal constituent of the present invention is calculated with oxide compound by mole per-cent; The doping agent composition calculates with oxide compound by weight percentage.High-curie temperature T of the present invention
c, wide temperature high saturated magnetic induction BB
sAnd than low-loss P
LThe MnZn Ferrite Material of characteristic is made up of major ingredient and doping agent, and major ingredient comprises: 58.0-62.0mol%Fe
2O
3, 10.0-15.0mol%ZnO, 4.0-6.0mol%NiO, surplus is MnO;
With the major ingredient after the pre-burning is reference data, by weight percentage, calculates with oxide compound, and doping agent comprises: 0.001-0.30wt%MoO
3, 0.01-0.40wt%Bi
2O
3, 0.001-0.05wt%SnO
2, 0.001-0.05wt%Nb
2O
5, 0.001-0.20wt%Ta
2O
5For example, if the major ingredient quality after the pre-burning is a gram, then MoO
3Quality be the wt% of a * (0.001-0.30) gram.
Preparation method of the present invention may further comprise the steps:
1, prescription
Adopt 58.0-62.0mol%Fe
2O
3, 10.0-15.0mol%ZnO, 4.0-6.0mol%NiO, surplus is MnO;
2, ball milling
To in ball mill, mix time 1-3 hour with the material loading powder;
3, pre-burning
With step 2 gained ball milling material oven dry, under 60-100MPa, be pressed into cake, and in 800-1000 ℃ of stove pre-burning 1-3 hour;
4, mix
Step 3 gained material powder is added following doping agent: 0.001-0.30wt%MoO by weight
3, 0.01-0.40wt%Bi
2O
3, 0.001-0.05wt%SnO
2, 0.001-0.05wt%Nb
2O
5, 0.001-0.20wt%Ta
2O
5
5, secondary ball milling
In ball mill, prepare the superhard ball-milling medium of different diameter size by a certain percentage, with the material powder that obtains in the step 4 according to certain pellet mixed, in ball mill ball milling 4-8 hour;
6, moulding
Step 5 gained material powder is added the 8-12wt% organic binder bond by weight, and mixing after the granulation, is pressed into blank with granular powder on press;
7, sintering
Step 6 gained blank is placed sintering in the atmosphere sintering furnace, at 1000 ℃ of-1300 ℃ of temperature sections, volume ratio O
2/ N
2=1/999, at 1300 ℃ of-1400 ℃ of temperature sections, O
2/ N
2=4/96, be incubated 4-6 hour; Carry out the balanced atmosphere sintering at temperature descending section.
8, test
Step 7 gained sample is carried out the electromagnetic performance test.
With inductance L, suitably adjust coiling both end voltage value U with the accurate LCR tester of favour TH2828 specimen
sIt is satisfied: U
s=4.44NfA
eB, the initial permeability of sample is calculated according to following formula:
Wherein L is the inductance of sample, and N is a number of turns, and h is a thickness of sample, and D is the sample external diameter, and d is the sample internal diameter, A
eNet sectional area for sample.Test condition is: frequency f=10kHz, magnetic induction density B≤0.25mT.Draw μ in conjunction with temperature control box
i-T graphic representation uses epitaxial method to determine Curie temperature T
c
With the magnetic hysteresis loop of IWATSU SY-8232B-H analyser specimen, test condition is: f=0.1kHz, H=1200A/m.
With the loss of IWATSU SY-8232B-H analyser specimen, test condition is: f=100kHz, BB
m=200mT, T=25 ℃-120 ℃.
Specific embodiment:
Embodiment 1-4: a kind of high-curie temperature T
c, wide temperature high saturated magnetic induction BB
sAnd than low-loss P
LMnZn Ferrite Material of characteristic and preparation method thereof may further comprise the steps:
1, prescription
Embodiment 1-4 major ingredient prescription sees the following form:
2, ball milling
To in ball mill, mix 2 hours time with the material loading powder;
3, pre-burning
With step 2 gained ball milling material oven dry, under 60MPa, be pressed into cake, and pre-burning 2 hours in 850 ℃ of stoves;
4, mix
Step 3 gained material powder is added doping agent shown in the following table by weight:
5, secondary ball milling
Prepare the superhard ball-milling medium of different diameter size in ball mill by a certain percentage, according to certain pellet mixed, ball milling is 6 hours in ball mill with the material powder that obtains in the step 4;
6, moulding
Step 5 gained material powder is added the 10wt% organic binder bond by weight, and mixing after the granulation, is pressed into blank with granular powder on press;
7, sintering
Step 6 gained blank is placed sintering in the atmosphere sintering furnace, at 1000 ℃ of-1300 ℃ of temperature sections, volume ratio O
2/ N
2=1/999, at 1360 ℃ of insulations 5 hours, O
2/ N
2=4/96; Carry out the balanced atmosphere sintering at temperature descending section.
The high-curie temperature T that the above prepared of process goes out
c, wide temperature high saturated magnetic induction BB
sAnd than low-loss P
LThe MnZn Ferrite Material of characteristic, its performance index are as follows:
Embodiment 1-4 test result is as follows:
Claims (4)
1. high T
c, wide temperature superelevation B
sThe MnZn Ferrite Material is made up of major ingredient and doping agent, it is characterized in that major ingredient comprises: 58.0-62.0mol%Fe
2O
3, 10.0-15.0mol%ZnO, 4.0-6.0mol%NiO, surplus is MnO;
By weight percentage, and be reference data, calculate that doping agent comprises: 0.001-0.30wt%MoO with oxide compound with the major ingredient after the pre-burning
3, 0.01-0.40wt%Bi
2O
3, 0.001-0.05wt%SnO
2, 0.001-0.05wt%Nb
2O
5, 0.001-0.20wt%Ta
2O
5
2. high T
c, wide temperature superelevation B
sMnZn ferrite material preparation method for material is characterized in that, may further comprise the steps:
1) prescription
Adopt 58.0-62.0mol%Fe
2O
3, 10.0-15.0mol%ZnO, 4.0-6.0mol%NiO, surplus is MnO;
2) ball milling
The material powder of above prescription is mixed ball milling;
3) pre-burning
With step 2) oven dry of gained ball milling material, under 60-100MPa, suppress, and at 800-1000 ℃ of pre-burning 1-3 hour;
4) mix
Step 3) gained material powder is added following doping agent: 0.001-0.30wt%MoO by weight
3, 0.01-0.40wt%Bi
2O
3, 0.001-0.05wt%SnO
2, 0.001-0.05wt%Nb
2O
5, 0.001-0.20wt%Ta
2O
5
5) secondary ball milling
With the material powder that obtains in the step 4) in ball mill ball milling 4-8 hour;
6) moulding
Step 5) gained material powder is added 8～12wt% organic binder bond by weight, and mixing after the granulation, is pressed into blank with granular powder on press;
7) sintering
Step 6) gained blank is placed sintering in the atmosphere sintering furnace.
3. MnZn ferrite material preparation method for material as claimed in claim 2 is characterized in that described step 7) is: step 6) gained blank is placed sintering in the atmosphere sintering furnace, at 1000 ℃ of-1300 ℃ of temperature sections, volume ratio O
2/ N
2=1/999; At 1300 ℃ of-1400 ℃ of temperature sections, O
2/ N
2=4/96, be incubated 4-6 hour; Carry out the balanced atmosphere sintering at temperature descending section.
4. MnZn ferrite material preparation method for material as claimed in claim 2 is characterized in that the prescription of step 1) is: 59.0mol%Fe
2O
3, 14.0mol%ZnO, 6.0mol%NiO, 21.0mol%MnO;
Doping agent is in the step 3): 0.08wt%MoO
3, 0.03wt%Bi
2O
3, 0.03wt%Nb
2O
5, 0.05wt%Ta
2O
5
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310092273.9A CN103214233B (en) | 2013-01-31 | 2013-03-21 | High Tc, wide temperature ultrahigh Bs MnZn ferrite material and preparation method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037163 | 2013-01-31 | ||
| CN201310037163.2 | 2013-01-31 | ||
| CN201310092273.9A CN103214233B (en) | 2013-01-31 | 2013-03-21 | High Tc, wide temperature ultrahigh Bs MnZn ferrite material and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103214233A true CN103214233A (en) | 2013-07-24 |
| CN103214233B CN103214233B (en) | 2014-10-15 |
Family
ID=48812456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310092273.9A Active CN103214233B (en) | 2013-01-31 | 2013-03-21 | High Tc, wide temperature ultrahigh Bs MnZn ferrite material and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103214233B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384435A (en) * | 2015-11-12 | 2016-03-09 | 横店集团东磁股份有限公司 | Manganese-zinc ferrite material with quaternary formula and ultrahigh Bs and preparation method |
| CN106747397A (en) * | 2017-03-09 | 2017-05-31 | 电子科技大学 | YIG Ferrite Materials and preparation method |
| CN107540360A (en) * | 2016-06-25 | 2018-01-05 | 临沂春光磁业有限公司 | It is a kind of that there is high saturated magnetic induction, high DC stacked Ferrite Material |
| CN108530050A (en) * | 2018-03-27 | 2018-09-14 | 电子科技大学 | Wide-temperature and low-consumption high impedance MnZn soft magnetic ferrite and preparation method |
| CN112125657A (en) * | 2020-08-31 | 2020-12-25 | 常熟浩博电子科技有限公司 | Wide-temperature high-power MnZn ferrite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1649039A (en) * | 2004-01-30 | 2005-08-03 | Tdk株式会社 | Method for producing Mn-Zn ferrite |
| CN1662470A (en) * | 2002-09-26 | 2005-08-31 | Tdk株式会社 | Ferrite material |
| CN1692089A (en) * | 2003-01-10 | 2005-11-02 | Tdk株式会社 | Ferrite material and method of manufacturing the same |
-
2013
- 2013-03-21 CN CN201310092273.9A patent/CN103214233B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1662470A (en) * | 2002-09-26 | 2005-08-31 | Tdk株式会社 | Ferrite material |
| CN1692089A (en) * | 2003-01-10 | 2005-11-02 | Tdk株式会社 | Ferrite material and method of manufacturing the same |
| CN1649039A (en) * | 2004-01-30 | 2005-08-03 | Tdk株式会社 | Method for producing Mn-Zn ferrite |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384435A (en) * | 2015-11-12 | 2016-03-09 | 横店集团东磁股份有限公司 | Manganese-zinc ferrite material with quaternary formula and ultrahigh Bs and preparation method |
| CN105384435B (en) * | 2015-11-12 | 2018-03-09 | 横店集团东磁股份有限公司 | A kind of 4 yuan of formula superelevation Bs MnZn ferrite materials and preparation method |
| CN107540360A (en) * | 2016-06-25 | 2018-01-05 | 临沂春光磁业有限公司 | It is a kind of that there is high saturated magnetic induction, high DC stacked Ferrite Material |
| CN107540360B (en) * | 2016-06-25 | 2020-12-04 | 临沂春光磁业有限公司 | Ferrite material with high saturation magnetic induction intensity and high direct current superposition |
| CN106747397A (en) * | 2017-03-09 | 2017-05-31 | 电子科技大学 | YIG Ferrite Materials and preparation method |
| CN108530050A (en) * | 2018-03-27 | 2018-09-14 | 电子科技大学 | Wide-temperature and low-consumption high impedance MnZn soft magnetic ferrite and preparation method |
| CN108530050B (en) * | 2018-03-27 | 2021-04-27 | 电子科技大学 | Wide-temperature low-loss high-impedance MnZn soft magnetic ferrite material and preparation method thereof |
| CN112125657A (en) * | 2020-08-31 | 2020-12-25 | 常熟浩博电子科技有限公司 | Wide-temperature high-power MnZn ferrite material and preparation method thereof |
| CN112125657B (en) * | 2020-08-31 | 2022-07-29 | 常熟浩博电子科技有限公司 | Wide-temperature high-power MnZn ferrite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103214233B (en) | 2014-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103172358B (en) | High-Bs and high-Tc MnZn ferrite material and preparation method thereof | |
| CN101256866B (en) | Wide temperature ultra-low loss MnZn soft magnetic ferrite material and preparing method thereof | |
| CN103274676B (en) | Wide-temperature high-Bs MnZn soft magnetic ferrite material and preparation method thereof | |
| CN103214233B (en) | High Tc, wide temperature ultrahigh Bs MnZn ferrite material and preparation method | |
| CN108558383B (en) | NiZn ferrite material and preparation method thereof | |
| CN108530050B (en) | Wide-temperature low-loss high-impedance MnZn soft magnetic ferrite material and preparation method thereof | |
| CN109851349B (en) | High-performance environment-friendly hexagonal permanent magnetic ferrite material and preparation method thereof | |
| JP3108803B2 (en) | Mn-Zn ferrite | |
| CN100508083C (en) | Process for preparing high frequency high power ferrite material | |
| CN101620907A (en) | Broad temperature low standby power consumption FPT type soft magnetic ferrite and preparation method thereof | |
| CN105174932B (en) | High DC stacked characteristic MnZn Ferrite Material and preparation method | |
| CN102682946A (en) | MnZn ferrite magnetic core with double characteristics and manufacture method | |
| US6991742B2 (en) | Mn-Zn ferrite and coil component with magnetic core made of same | |
| CN106747397A (en) | YIG Ferrite Materials and preparation method | |
| CN104200944B (en) | A kind of high q-factor compound soft magnetic material and preparation method thereof | |
| CN102751065A (en) | Wide-temperature broadband low-loss MnZn power ferrite material and preparation method thereof | |
| CN105198395A (en) | Heat shock-resistant power Ni-Zn ferrite and preparation method thereof | |
| CN104177075A (en) | Heat-shock-resistant soft magnetic ferrite material and preparation method thereof | |
| CN102290185B (en) | Soft magnetic material with high saturation magnetic flux density, high transmission capability and high direct current superposition-resisting property and preparation method thereof | |
| CN104409189A (en) | Compound soft magnetic material and preparation method thereof | |
| EP0980857B1 (en) | A Mn-Zn ferrite | |
| CN109678483A (en) | The preparation method of wide temperature low-temperature coefficient low-consumption Mn-Zn ferrite material | |
| CN109678486A (en) | A kind of wide warm low-temperature coefficient low-consumption Mn-Zn ferrite material | |
| CN100372801C (en) | Low-temperature preparation method for high-frequency power ferrite material | |
| CN113149630B (en) | High magnetic conductivity and high B s High T c MnZn ferrite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20130724 Assignee: MAANSHAN NEW CONDA MAGNETIC INDUSTRIAL CO.,LTD. Assignor: University of Electronic Science and Technology of China Contract record no.: 2014510000194 Denomination of invention: High Tc, wide temperature ultra high BsMnZn ferrite material and preparation method Granted publication date: 20141015 License type: Exclusive License Record date: 20141224 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170315 Address after: 243031 Anhui New District of Ma'anshan City Economic Development Zone magnetic Yushan Mountain Rain Road No. 1 Patentee after: MAANSHAN NEW CONDA MAGNETIC INDUSTRIAL CO.,LTD. Address before: 610000 Chengdu province high tech Zone (West) West source Avenue, No. 2006 Patentee before: University of Electronic Science and Technology of China |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 243000 No.1, Cishan Road, Yushan Economic Development Zone, Yushan District, Ma'anshan, Anhui Province Patentee after: Ma'anshan Xinkangda Magnetic Industry Co.,Ltd. Address before: 243031 No.1 Cishan Road, Yushan Economic Development Zone, Yushan District, Ma'anshan City, Anhui Province Patentee before: MAANSHAN NEW CONDA MAGNETIC INDUSTRIAL CO.,LTD. |