CN107540360B - Ferrite material with high saturation magnetic induction intensity and high direct current superposition - Google Patents
Ferrite material with high saturation magnetic induction intensity and high direct current superposition Download PDFInfo
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- CN107540360B CN107540360B CN201610513963.0A CN201610513963A CN107540360B CN 107540360 B CN107540360 B CN 107540360B CN 201610513963 A CN201610513963 A CN 201610513963A CN 107540360 B CN107540360 B CN 107540360B
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Abstract
The invention discloses a ferrite material with high saturation magnetic induction and high direct current superposition, which comprises the following components in percentage: 20-21% of Mn, 5-6% of Zn, 2-3% of Ni, 0.1-0.4% of trace metal elements and the balance of Fe. The reduction of Mn content can reduce the residual magnetic strength of the material and enhance the direct current superposition performance of the ferrite material, and the ferrite material provided by the invention has the characteristics of high saturation magnetic induction, low residual magnetic strength, low power loss at high temperature and high direct current superposition.
Description
Technical Field
The invention relates to the technical field of ferrite, in particular to a ferrite material with high saturation magnetic induction intensity and high direct current superposition.
Background
Ferrite cores are increasingly used in a variety of electronic circuits. However, in some circuits, devices often need to operate under certain dc conditions, such as output transformers, smoothing chokes, and the like. In this case, the magnetic core needs to have good direct current superposition characteristics in addition to good electromagnetic characteristics. That is, the reduction of the core inductance is low under the superimposed dc, so that at present, over 80% of manufacturers have made demands on the dc superimposition, and foreign manufacturers and enterprises pay particular attention to the dc superimposition performance, for example, companies such as samsung korea and japan panasonic corporation. Currently, TDK companies as soft magnetic faucet enterprises have only a few such products as HV22, HV38, HV40, HV45, etc. A few factories can produce products equivalent to TDK HV22 and HV38 in batches in China, and no factory can stably produce the products of HV40 and HV45 in China. Therefore, the research and development of the soft magnetic material can fill the blank of the domestic market and can also improve the technical strength of the magnetic material industry in China.
Disclosure of Invention
The present invention is directed to a ferrite material with high saturation magnetic induction and high dc superposition, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a ferrite material with high saturation magnetic induction and high direct current superposition comprises the following components in percentage: 20 to 21 percent of Mn, 5 to 6 percent of Zn, 2 to 3 percent of Ni, 0.1 to 0.4 percent of trace metal element and the balance of Fe.
Preferably, the trace metal elements are Ca, Nb, V, Ti, Co and Zr, and the component ratio of the trace metal elements is as follows: ca, Nb, V, Ti, Co, Zr 1: 2: 1: 2.
Preferably, the ferrite material comprises the following components in percentage: 20 to 20.7 percent of Mn, 5 to 5.5 percent of Zn, 2 to 2.6 percent of Ni, 0.1 to 0.3 percent of trace metal element and the balance of Fe.
Preferably, the ferrite material comprises the following components in percentage: 20 to 20.5 percent of Mn, 5 to 5.4 percent of Zn, 2 to 2.4 percent of Ni, 0.1 to 0.2 percent of trace metal element and the balance of Fe.
Preferably, the ferrite material comprises the following components in percentage: 20.1 to 20.4 percent of Mn, 5.1 to 5.3 percent of Zn, 2.1 to 2.3 percent of Ni, 0.1 to 0.15 percent of trace metal element and the balance of Fe.
Preferably, the ferrite material comprises the following components in percentage: 20.2 percent of Mn, 5.2 percent of Zn, 2.2 percent of Ni, 0.12 percent of trace metal element and the balance of Fe.
Preferably, in the ferrite material, Fe is provided by Fe2O3, Mn is provided by Mn3O4, Zn is provided by ZnO, and Ni is provided by NiO.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the proportion of Fe, Zn and Mn in the ferrite is adjusted, the content of Fe is increased, the high saturation magnetic induction intensity of the material is enhanced, the reduction of the power consumption valley point temperature caused by the increase of the content of Fe is compensated by adding Ni, the residual magnetic intensity of the material and the direct current superposition performance of the ferrite material can be reduced by reducing the content of Mn, and the ferrite material provided by the invention has the characteristics of high saturation magnetic induction intensity, low residual magnetic intensity, low power loss at high temperature and high direct current superposition.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
A ferrite material with high saturation magnetic induction and high direct current superposition comprises the following components in percentage: 20.5% of Mn, 5.1% of Zn, 2.3% of Ni, 0.1% of trace metal elements and the balance of Fe 72%, wherein the trace metal elements are Ca, Nb, V, Ti, Co and Zr, and the component ratio of the trace metal elements is as follows: ca, Nb, V, Ti, Co, Zr 1: 2: 1: 2, Fe in the ferrite material is provided by Fe2O3, Mn in the ferrite material is provided by Mn3O4, Zn is provided by ZnO, and Ni is provided by NiO.
Example two
A ferrite material with high saturation magnetic induction and high direct current superposition comprises the following components in percentage: 20.4 percent of Mn, 5.2 percent of Zn, 2.2 percent of Ni, 0.1 percent of trace metal elements and the balance of Fe72.1 percent.
EXAMPLE III
A ferrite material with high saturation magnetic induction and high direct current superposition comprises the following components in percentage: 20.3 percent of Mn, 5.15 percent of Zn, 2.3 percent of Ni, 0.15 percent of trace metal elements and the balance of Fe72.1 percent.
Example four
A ferrite material with high saturation magnetic induction and high direct current superposition comprises the following components in percentage: 20.1 percent of Mn, 5.1 percent of Zn, 2.2 percent of Ni, 0.2 percent of trace metal elements and the balance of Fe72.4 percent.
EXAMPLE five
A ferrite material with high saturation magnetic induction and high direct current superposition comprises the following components in percentage: 20.2 percent of Mn, 5.2 percent of Zn, 2.2 percent of Ni, 0.12 percent of trace metal elements and the balance of Fe72.8 percent.
Tests prove that the most preferable formula is shown in the fifth embodiment, and the performance indexes of the formula are as follows: initial magnetic conductivity mui is more than 1800, saturation magnetic induction Bs is more than 540mT, remanence Br is less than 120mT, magnetic conductivity attenuation is less than 75% when 1A current is superposed, and the direct current superposition characteristic is excellent.
The manganese zinc ferrite material with high saturation magnetic flux density, high direct current superposition and low loss has excellent direct current superposition characteristics after experimental verification, completely has high-tech projects of subsequent production and further expansion and application, has wide market prospect, and has very important significance for improving enterprise competitiveness and improving the practicability of production and life.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A ferrite material with high saturation magnetic induction and high direct current superposition is characterized in that: the ferrite material comprises the following components in percentage: 20 to 21 percent of Mn, 5 to 6 percent of Zn, 2 to 3 percent of Ni, 0.1 to 0.4 percent of trace metal element and the balance of Fe.
2. The ferrite material with high saturation induction and high direct current superposition of claim 1, wherein: the trace metal elements are Ca, Nb, V, Ti, Co and Zr, and the component proportion of the trace metal elements is as follows: ca, Nb, V, Ti, Co, Zr 1: 2: 1: 2.
3. The ferrite material with high saturation induction and high direct current superposition of claim 1, wherein: the ferrite material comprises the following components in percentage: 20 to 20.7 percent of Mn, 5 to 5.5 percent of Zn, 2 to 2.6 percent of Ni, 0.1 to 0.3 percent of trace metal element and the balance of Fe.
4. The ferrite material with high saturation induction and high direct current superposition of claim 1, wherein: the ferrite material comprises the following components in percentage: 20 to 20.5 percent of Mn, 5 to 5.4 percent of Zn, 2 to 2.4 percent of Ni, 0.1 to 0.2 percent of trace metal element and the balance of Fe.
5. The ferrite material with high saturation induction and high direct current superposition of claim 1, wherein: the ferrite material comprises the following components in percentage: 20.1 to 20.4 percent of Mn, 5.1 to 5.3 percent of Zn, 2.1 to 2.3 percent of Ni, 0.1 to 0.15 percent of trace metal element and the balance of Fe.
6. The ferrite material with high saturation induction and high direct current superposition of claim 1, wherein: the ferrite material comprises the following components in percentage: 20.2 percent of Mn, 5.2 percent of Zn, 2.2 percent of Ni, 0.12 percent of trace metal element and the balance of Fe.
7. The ferrite material with high saturation induction and high direct current superposition of claim 1, wherein: the Fe in the ferrite material is passed through Fe2O3Providing that Mn in the ferrite material passes through Mn3O4Zn is provided by ZnO, and Ni is provided by NiO.
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| CN108249908A (en) * | 2018-01-18 | 2018-07-06 | 常熟市三佳磁业有限公司 | Low-power consumption high magnetic permeability and magnetic hysteresis are stretched manganese-zinc ferrite and preparation method thereof |
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