CN101575205B - Mn-Zn ferrite material with high magnetic conductivity, high Curie temperature and low loss - Google Patents
Mn-Zn ferrite material with high magnetic conductivity, high Curie temperature and low loss Download PDFInfo
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- CN101575205B CN101575205B CN2008100370056A CN200810037005A CN101575205B CN 101575205 B CN101575205 B CN 101575205B CN 2008100370056 A CN2008100370056 A CN 2008100370056A CN 200810037005 A CN200810037005 A CN 200810037005A CN 101575205 B CN101575205 B CN 101575205B
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Abstract
The invention discloses Mn-Zn ferrite materials with high magnetic conductivity, high Curie temperature and low loss, comprising main components and an additive, wherein the main components comprise the following compositions by weight percentage: 60 percent to 75 percent of Fe2O3, 5 percent to 15 percent of ZnO, and the balance of Mn3O4; and the additive comprises the following compositions by weight percentage relative to the total weight of the main components: 0.05 percent to 0.1 percent of CaCo3, 0.1 percent to 0.3 percent of TiO2, 0.001 percent to 0.005 percent of SiO2, and 0.01 percent and 0.03 percent of Nb2O5. Compared with the prior art, the Mn-Zn ferrite materials with high magnetic conductivity, high Curie temperature and low loss has the double characteristics, can be applied to the communication electronic field under the low flux density, and can also be applied to the power electronic field under the high flux density.
Description
Technical field
The present invention relates to a kind of Mn-Zn Ferrite Material, specifically, relate to a kind of have high magnetic permeability, high-curie temperature and low-loss Mn-Zn Ferrite Material.
Background technology
Soft magnetic ferrite is a kind of very important basic function material in the national economy, is widely used in each electronic product, for example: communication equipment, household electrical appliance, computer, automobile etc.In recent years, electronic product is to development light, thin, short, little direction, and to the demands for higher performance of soft magnetic ferrite, wherein the high-permeability Mn-Zn material is along with the market development variation is the fastest, one of market prospects best material.The high-permeability Mn-Zn Ferrite Material is mainly used in the electronic circuit wide-band transformer, the pulse transformer in fields such as Integrated Service Digital Network, Local Area Network, wide area network (WAN), background illumination, fields such as anti-electromagnetic wave filter.The magnetic core in these fields is under feeble field, to work basically, and at this moment the high magnetic permeability of material will demonstrate unique advantages.At first, when the magnetic permeability of material is higher, the inductance value that less coil turn just can acquiring demand, and then reduce the D.C. resistance of coil effectively and by its loss that causes; Secondly, use the high material of magnetic permeability can obviously reduce the volume of transformer, help miniaturization, the lightweight of device and system.These characteristics have been complied with the development trend of electronic product, and its output has accounted for more than 25% of whole soft magnetic ferrite total outputs at present.Along with the high speed development of electronics and information industries such as communication, computer, network, its market demand is with average annual speed rapid growth more than 20%.Therefore, both at home and abroad relevant enterprise to high magnetic permeability Mn-Zn ferritic research all pay much attention to.
Because application market requires the Mn-Zn Ferrite Material not only will have high initial permeability; Must have simultaneously good temperature characterisitic, frequency characteristic, low loss, high impedance and good stack performance etc.; Therefore, the research in high magnetic permeability field has been transferred to the raising combination property and has been come from simple pursuit high magnetic permeability aspect, require when improving magnetic permeability; Also to take into account other performance parameters; Make material property reach a good balance, promptly have following combination property: higher saturation flux density Bs, better direct current biasing characteristic DC-Bias; Lower loss (the fissipation factor tg δ/μ under the low magnetic flux density, the power consumption Pc under the high magnetic flux density), lower total harmonic distortion coefficient (THD); Wideer frequency of utilization and wider temperature range.Having high-Curie-point and be the key that solves wide temperature requirement, but will make the Mn-Zn Ferrite Material when having high magnetic permeability, have high-Curie-point and low loss characteristic, then is to remain the difficult problem that this area scientific and technical personnel need solve.
Summary of the invention
The technical problem that the present invention will solve provides a kind of have high magnetic permeability, high-curie temperature and low-loss Mn-Zn Ferrite Material, to satisfy the demand of market to the Mn-Zn Ferrite Material.
For achieving the above object, technical scheme of the present invention is following:
Of the present invention have high magnetic permeability, high-curie temperature and a low-loss Mn-Zn Ferrite Material, is made up of principal component and additive, wherein the composition of principal component and respectively form shared percentage by weight and be: Fe
2O
3Account for 60～75%, ZnO accounts for 5%～15%, all the other are Mn
3O
4, it is characterized in that the percentage by weight that the composition of said additive and each are formed main relatively composition gross weight is: CaCO
3Account for 0.05～0.1%, TiO
2Account for 0.1～0.3%, SiO
2Account for 0.001～0.005% and Nb
2O
5Account for 0.01～0.03%.
Total addition of said additive accounts for the percentage by weight preferred 0.18～0.42% of main composition gross weight.
Compared with prior art, Mn-Zn Ferrite Material of the present invention has high magnetic permeability, high-curie temperature and low loss characteristic, that is: the initial permeability μ under 25 ℃, 10KHz, 0.8mA condition
iReach 3800～4750; Curie temperature Tc reaches 250～260 ℃; Saturation induction density Bs under 25 ℃, 1194A/m condition reaches 550～600mT; Saturation induction density Bs under 100 ℃, 1194A/m condition reaches 420～450mT; Specific loss coefficient tg δ/μ i under 25 ℃, 10KHz, 0.8mA condition reaches 1.2 * 10
-6Specific loss coefficient tg δ/μ i under 25 ℃, 100KHz, 0.8mA condition reaches 1.3 * 10
-6This Mn-Zn Ferrite Material of the present invention has double grading; Both can be applicable to the communications electronics field under the low magnetic flux density; Can be applicable to the field of power electronics under the high magnetic flux density again, promptly under low magnetic flux density, be used to make low-loss, high-fidelity filtering device; In ADSL Technology, be used to make integrated services digital network frequency divider and low pass filter; Under high magnetic flux density, be used to make the anti-interference element of high temperature of car electrics and the high Bs device of refrigeration, weaving, the transmission of printing equipment power and frequency inverted control circuit.
Embodiment
Below in conjunction with embodiment the present invention is done further detailed, complete explanation:
Embodiment 1
Present embodiment have high magnetic permeability, high-curie temperature and a low-loss Mn-Zn Ferrite Material, form by principal component and additive, wherein the composition of principal component and respectively form shared percentage by weight and be: Fe
2O
3Account for 70.9%, ZnO accounts for 6.7%, Mn
3O
4Account for 22.4%, the percentage by weight that the composition of additive and each are formed main relatively composition gross weight is: CaCO
3Account for 0.05%, TiO
2Account for 0.1%, SiO
2Account for 0.005% and Nb
2O
5Account for 0.03%.
The preparation technology with high magnetic permeability, high-curie temperature and low-loss Mn-Zn Ferrite Material of present embodiment is a prior art; Identical with technology described in the Chinese patent document CN1896032, comprise batching, mixing, pre-burning, pulverizing just, sand milling, mist projection granulating, adding additive and sintering process.
Through detecting, present embodiment have high magnetic permeability, a high-curie temperature and low-loss Mn-Zn Ferrite Material initial permeability μ under 25 ℃, 10KHz, 0.8mA condition
iBe 3800; Curie temperature Tc is 250 ℃; Saturation induction density Bs under 25 ℃, 1194A/m condition is 550mT; Saturation induction density Bs under 100 ℃, 1194A/m condition is 420mT; Specific loss coefficient tg δ/μ i under 25 ℃, 10KHz, 0.8mA condition is 1.2 * 10
-6Specific loss coefficient tg δ/μ i under 25 ℃, 100KHz, 0.8mA condition is 1.3 * 10
-6
Embodiment 2
Present embodiment have high magnetic permeability, high-curie temperature and a low-loss Mn-Zn Ferrite Material, form by principal component and additive, wherein the composition of principal component and respectively form shared percentage by weight and be: Fe
2O
3Account for 70.9%, ZnO accounts for 6.7%, Mn
3O
4Account for 22.4%, the percentage by weight that the composition of additive and each are formed main relatively composition gross weight is: CaCO
3Account for 0.075%, TiO
2Account for 0.2%, SiO
2Account for 0.003% and Nb
2O
5Account for 0.02%.
The preparation technology with high magnetic permeability, high-curie temperature and low-loss Mn-Zn Ferrite Material of present embodiment is a prior art; Identical with technology described in the Chinese patent document CN1896032, comprise batching, mixing, pre-burning, pulverizing just, sand milling, mist projection granulating, adding additive and sintering process.
Through detecting, present embodiment have high magnetic permeability, a high-curie temperature and low-loss Mn-Zn Ferrite Material initial permeability μ under 25 ℃, 10KHz, 0.8mA condition
iBe 4200; Curie temperature Tc is 255 ℃; Saturation induction density Bs under 25 ℃, 1194A/m condition is 570mT; Saturation induction density Bs under 100 ℃, 1194A/m condition is 440mT; Specific loss coefficient tg δ/μ i under 25 ℃, 10KHz, 0.8mA condition is 1.2 * 10
-6Specific loss coefficient tg δ/μ i under 25 ℃, 100KHz, 0.8mA condition is 1.3 * 10
-6
Embodiment 3
Present embodiment have high magnetic permeability, high-curie temperature and a low-loss Mn-Zn Ferrite Material, form by principal component and additive, wherein the composition of principal component and respectively form shared percentage by weight and be: Fe
2O
3Account for 70.9%, ZnO accounts for 6.7%, Mn
3O
4Account for 22.4%, the percentage by weight that the composition of additive and each are formed main relatively composition gross weight is: CaCO
3Account for 0.1%, TiO
2Account for 0.3%, SiO
2Account for 0.0015% and Nb
2O
5Account for 0.01%.
The preparation technology with high magnetic permeability, high-curie temperature and low-loss Mn-Zn Ferrite Material of present embodiment is a prior art; Identical with technology described in the Chinese patent document CN1896032, comprise batching, mixing, pre-burning, pulverizing just, sand milling, mist projection granulating, adding additive and sintering process.
Through detecting, present embodiment have high magnetic permeability, a high-curie temperature and low-loss Mn-Zn Ferrite Material initial permeability μ under 25 ℃, 10KHz, 0.8mA condition
iBe 4750; Curie temperature Tc is 260 ℃; Saturation induction density Bs under 25 ℃, 1194A/m condition is 600mT; Saturation induction density Bs under 100 ℃, 1194A/m condition is 450mT; Specific loss coefficient tg δ/μ i under 25 ℃, 10KHz, 0.8mA condition is 1.2 * 10
-6Specific loss coefficient tg δ/μ i under 25 ℃, 100KHz, 0.8mA condition is 1.3 * 10
-6
Claims (3)
1. one kind has high magnetic permeability, high-curie temperature and low-loss Mn-Zn Ferrite Material, is made up of principal component and additive, it is characterized in that, wherein the composition of principal component and respectively form shared percentage by weight and be: Fe
2O
3Account for 70.9%, ZnO accounts for 6.7%, Mn
3O
4Account for 22.4%, the percentage by weight that the composition of said additive and each are formed main relatively composition gross weight is: CaCO
3Account for 0.05%, TiO
2Account for 0.1%, SiO
2Account for 0.005% and Nb
2O
5Account for 0.03%;
Said have high magnetic permeability, a high-curie temperature and low-loss Mn-Zn Ferrite Material initial permeability μ under 25 ℃, 10KHz, 0.8mA condition
iBe 3800; Curie temperature Tc is 250 ℃; Saturation induction density Bs under 25 ℃, 1194A/m condition is 550mT; Saturation induction density Bs under 100 ℃, 1194A/m condition is 420mT; Specific loss coefficient tg δ/μ i under 25 ℃, 10KHz, 0.8mA condition is 1.2 * 10
-6Specific loss coefficient tg δ/μ i under 25 ℃, 100KHz, 0.8mA condition is 1.3 * 10
-6
2. one kind has high magnetic permeability, high-curie temperature and low-loss Mn-Zn Ferrite Material, is made up of principal component and additive, it is characterized in that, wherein the composition of principal component and respectively form shared percentage by weight and be: Fe
2O
3Account for 70.9%, ZnO accounts for 6.7%, Mn
3O
4Account for 22.4%, the percentage by weight that the composition of said additive and each are formed main relatively composition gross weight is CaCO
3Account for 0.075%, TiO
2Account for 0.2%, SiO
2Account for 0.003% and Nb
2O
5Account for 0.02%;
Said have high magnetic permeability, a high-curie temperature and low-loss Mn-Zn Ferrite Material initial permeability μ under 25 ℃, 10KHz, 0.8mA condition
iBe 4200; Curie temperature Tc is 255 ℃; Saturation induction density Bs under 25 ℃, 1194A/m condition is 570mT; Saturation induction density Bs under 100 ℃, 1194A/m condition is 440mT; Specific loss coefficient tg δ/μ i under 25 ℃, 10KHz, 0.8mA condition is 1.2 * 10
-6Specific loss coefficient tg δ/μ i under 25 ℃, 100KHz, 0.8mA condition is 1.3 * 10
-6
3. one kind has high magnetic permeability, high-curie temperature and low-loss Mn-Zn Ferrite Material, is made up of principal component and additive, it is characterized in that, wherein the composition of principal component and respectively form shared percentage by weight and be: Fe
2O
3Account for 70.9%, ZnO accounts for 6.7%, Mn
3O
4Account for 22.4%, the percentage by weight that the composition of said additive and each are formed main relatively composition gross weight is: CaCO
3Account for 0.1%, TiO
2Account for 0.3%, SiO
2Account for 0.0015% and Nb
2O
5Account for 0.01%;
Said have high magnetic permeability, a high-curie temperature and low-loss Mn-Zn Ferrite Material initial permeability μ under 25 ℃, 10KHz, 0.8mA condition
iBe 4750; Curie temperature Tc is 260 ℃; Saturation induction density Bs under 25 ℃, 1194A/m condition is 600mT; Saturation induction density Bs under 100 ℃, 1194A/m condition is 450mT; Specific loss coefficient tg δ/μ i under 25 ℃, 10KHz, 0.8mA condition is 1.2 * 10
-6Specific loss coefficient tg δ/μ i under 25 ℃, 100KHz, 0.8mA condition is 1.3 * 10
-6
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|---|---|---|---|
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|---|---|---|---|
| CN2008100370056A CN101575205B (en) | 2008-05-06 | 2008-05-06 | Mn-Zn ferrite material with high magnetic conductivity, high Curie temperature and low loss |
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| CN101575205B true CN101575205B (en) | 2012-02-22 |
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| CN106587979B (en) * | 2016-11-17 | 2019-04-05 | 横店集团东磁股份有限公司 | A kind of high magnetic conductivity and low loss MnZn Ferrite Material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061395A (en) * | 1990-11-15 | 1992-05-27 | 川崎制铁株式会社 | Produce the method for Mn-Zn ferrite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061395A (en) * | 1990-11-15 | 1992-05-27 | 川崎制铁株式会社 | Produce the method for Mn-Zn ferrite |
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Owner name: BAOSTEEL MAGNETIC INDUSTRY (JIANGSU) CO., LTD. Free format text: FORMER OWNER: SHANGHAI BAO STEEL MAGNETICS CO.,LTD. Effective date: 20131119 |
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