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Nickel zinc ferrite material with initial permeability of 10+/-20 percent and preparation method thereof

A technology of nickel-zinc ferrite and initial magnetic permeability, applied in the field of nickel-zinc ferrite material production, can solve the problems of high saturation magnetic flux density, too high magnetic permeability, unable to work normally, etc., and achieve high saturation Good effects on magnetic flux density, reduced heat generation, process repeatability and product consistency

Inactive Publication Date: 2011-08-31
JIAXING LONG KINGS LIGHTING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the magnetic permeability should not be too high, generally below 15, otherwise it will be difficult to match the circuit
[0005] At present, iron powder core materials are mainly used for choke coil cores in the market. This type of material is characterized by high saturation magnetic flux density and is not easy to be saturated under high current, but its resistivity is very low, so it is difficult to apply in the high frequency field. , especially at the 2.65MHz frequency of the high-frequency electrodeless lamp, the magnetic core is likely to generate a large eddy current loss, which will cause serious heating and cannot work normally

Method used

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  • Nickel zinc ferrite material with initial permeability of 10+/-20 percent and preparation method thereof
  • Nickel zinc ferrite material with initial permeability of 10+/-20 percent and preparation method thereof
  • Nickel zinc ferrite material with initial permeability of 10+/-20 percent and preparation method thereof

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Effect test

Embodiment 1

[0048] 1) Selection of raw materials: The initial magnetic permeability provided by the present invention is 10±20%, which has high frequency, low electromagnetic loss and high saturation magnetic flux density under relatively large operating current, and can be used to produce high frequency electrodeless lamp power generation The raw material of the nickel-zinc ferrite material of the choke coil in the device is industrially pure Fe 2 o 3 , ZnO, NiO and CoO.

[0049] 2) Composition design and weighing: according to Fe 2 o 3 49 mol%, ZnO 0.2 mol%, NiO 49 mol%, and CoO 1.8 mol%.

[0050] 3) Mixing of raw materials: Put the weighed raw materials into a sand mill, add deionized water, the weight of deionized water is 1.2 times of the total weight of raw materials, and the ball milling time is 2 hours.

[0051] 4) Pre-burning: Dry the raw materials that have been ball-milled once, and put them into an electric furnace for pre-burning. The pre-burning temperature is 1150°C, an...

Embodiment 2

[0061] 1) Selection of raw materials: The initial magnetic permeability provided by the present invention is 10±20%, which has high frequency, low electromagnetic loss and high saturation magnetic flux density under relatively large operating current, and can be used to produce high frequency electrodeless lamp power generation The raw material of the nickel-zinc ferrite material of the choke coil in the device is industrially pure Fe 2 o 3 , ZnO, NiO and CoO.

[0062] 2) Composition design and weighing: according to Fe 2 o 3 is 49 mol%, ZnO is 4.5 mol%, NiO is 44 mol%, and CoO is 2.5 mol%.

[0063] 3) Mixing of raw materials: Put the weighed raw materials into a sand mill, add deionized water, the weight of deionized water is 1.2 times of the total weight of raw materials, and the ball milling time is 1 hour.

[0064] 4) Pre-burning: Dry the raw materials that have been ball-milled once, and put them into an electric furnace for pre-burning. The pre-burning temperature is...

Embodiment 3

[0074] 1) Selection of raw materials: The initial magnetic permeability provided by the present invention is 10±20%, which has high frequency, low electromagnetic loss and high saturation magnetic flux density under relatively large operating current, and can be used to produce high frequency electrodeless lamp power generation The raw material of the nickel-zinc ferrite material of the choke coil in the device is industrially pure Fe 2 o 3 , NiO and CoO.

[0075] 2) Composition design and weighing: according to Fe 2 o 3 46.5 mol%, ZnO 4.2 mol%, NiO 49 mol%, and CoO 0.3 mol%.

[0076] 3) Mixing of raw materials: Put the weighed raw materials into a sand mill, add deionized water, the weight of deionized water is 1.2 times of the total weight of raw materials, and the ball milling time is 1.5 hours.

[0077]4) Pre-burning: Dry the raw materials that have been ball-milled once, and put them into an electric furnace for pre-burning. The pre-burning temperature is 1050°C, and ...

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Abstract

The invention discloses a nickel zinc ferrite material with the initial permeability of 10+ / -20 percent. A main phase of the material is a spinel structure, and the material comprises Fe2O3, ZnO, NiO and CoO; and the material is characterized by comprising the following components based on oxides: 46.5 to 49 mol percent of Fe2O3, 0.2 to 4.5 mol percent of ZnO, 44 to 49 mol percent of NiO and 0.3 to 2.5 mol percent of CoO. The nickel zinc ferrite material with the initial permeability of 10+ / -20 percent has high frequency, low electromagnetic loss and high saturation magnetic flux density under large working current, can be used for manufacturing choking coils in a power generator of a high frequency electroless lamp. The material has extremely low electromagnetic loss at the working frequency of 2.65MHz of the high frequency electroless lamp, has the quality Q of more than 260 at the frequency of 2.65MHz, and has the power consumption of below 800kw / m<3> under the testing conditions of 1MHz and 10mT.

Description

technical field [0001] The invention relates to a production technology of a nickel-zinc ferrite material for making a choke coil in a power generator of a high-frequency electrodeless lamp, in particular to a nickel-zinc ferrite material with an initial magnetic permeability of 10±20% and its preparation method. Background technique [0002] High Frequency Electronic Discharge Lamp (High Frequency Electronic Discharge Lamp) is a high-tech new light source that integrates the latest electronic power-saving technology and electric light source technology. It does not use a filament, but uses a magnetic field to stimulate gas discharge and light emission. It is highly efficient, energy-saving, and environmentally friendly. , long life and many other advantages. The high-frequency electrodeless lamp is composed of a generator, a power coupler and a bulb. The excitation source generates an electric frequency current above 2.65MHz, which is sent to the power coupler through the ...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622
Inventor 顾晔华胡军
Owner JIAXING LONG KINGS LIGHTING SCI & TECH
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