Initial magnetic-inductive capacity 20 (+4) (-4) nickel-zinc ferrite material and preparation method

A technology of nickel-zinc ferrite and initial magnetic permeability, applied in the direction of magnetism of inorganic materials, can solve the problems of ferrite eddy current loss increase, increase production cost, reduce lamp efficiency, etc., achieve good temperature characteristics, broadband and low electromagnetic loss, the effect of good electromagnetic loss characteristics

Inactive Publication Date: 2008-10-15
TONGXIANG TELIYOU ELECTRONICS SCI & TECH
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  • Abstract
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Problems solved by technology

[0005] At present, 3F4 power manganese zinc ferrite is generally used abroad to prepare power couplers in high frequency electrodeless lamps, but due to the existence of Fe 2 + ⇔ Fe 3 + Such a conductive pair, so its resistivity is usually low, and because the operating frequency of the high-frequency electrodeless lamp is usually above 2MHz, this leads to a sharp increase in the eddy current loss of the ferrite, which greatly reduces the efficiency of the lamp
In addition, because the eddy current loss of manganese zinc ferrite is very large, and the eddy current loss is mainly converted into heat, which causes the temperature of the ferrite to reach above 100°C during the working process, so that the 3F4 power manganese zinc ferrite can be assembled In the power coupler, special insulation treatment and skeleton support must be carried out, which leads to a more complicated process and increases the production cost

Method used

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  • Initial magnetic-inductive capacity 20 (+4) (-4) nickel-zinc ferrite material and preparation method
  • Initial magnetic-inductive capacity 20 (+4) (-4) nickel-zinc ferrite material and preparation method
  • Initial magnetic-inductive capacity 20 (+4) (-4) nickel-zinc ferrite material and preparation method

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Experimental program
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Effect test

Embodiment 1

[0032] 1) selection of raw material: a kind of nickel-zinc ferrite material and preparation method with an initial magnetic permeability of 23 provided by the present embodiment, its raw material selects industrially pure Fe 2 o 3 , ZnO, MnCO 3 , NiO and CoO.

[0033] 2) Composition design and weighing: according to Fe 2 o 3 49mol%, ZnO 6mol%, MnCO 3 1 mol%, NiO 42.7 mol%, and CoO 1.3 mol%.

[0034] 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.

[0035] 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 950°C, and the pre-burning time is 3.5 hours. After pre-burning, it is cooled with the furnace. After pre-burning, XRD phase analysis was carried out on the pre-fired material, and it was confirmed th...

Embodiment 2

[0043] 1) Selection of raw material: a kind of nickel-zinc ferrite material and preparation method with an initial magnetic permeability of 21 provided in this embodiment, its raw material selects industrially pure Fe 2 o 3 , ZnO, MnCO 3 , NiO and CoO.

[0044] 2) Composition design and weighing: according to Fe 2 o 3 46mol%, ZnO 2.4mol%, MnCO 3 0.1 mol%, NiO 49 mol%, and CoO 2.5 mol%.

[0045] 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.

[0046] 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 1100°C, and the pre-burning time is 1.5 hours. After pre-burning, it is cooled with the furnace. After pre-burning, XRD phase analysis was carried out on the pre-fired material, and it was confirmed that on...

Embodiment 3

[0054] 1) Selection of raw materials: a kind of nickel-zinc ferrite material with an initial magnetic permeability of 19 and its preparation method provided by the present embodiment, its raw material selects industrially pure Fe 2 o 3 , MnCO 3 , NiO and CoO.

[0055] 2) Composition design and weighing: according to Fe 2 o 3 49mol%, MnCO 3 0.4 mol%, NiO 49 mol%, and CoO 1.6 mol%.

[0056] 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.

[0057] 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 1000°C, and the pre-burning time is 2 hours. After pre-burning, it is cooled with the furnace. After pre-burning, XRD phase analysis was carried out on the pre-fired material, and it was confirmed that only sp...

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Abstract

The invention discloses an oxygen body material of nickel, zinc and ferrum with initial permeability being 20<-4><+4> and a preparation method thereof. The main phase of the material is spinel structure, and the material essentially consists of Fe2O3, MnO, NiO and CoO, and the contents of composition calculated by oxide are: 46mol percent to 49mol percent of Fe2O3, 0.1mol percent to 1.0mol percent of MnO, 42.7mol percent to 49mol percent of NiO and 1.3mol percent to 2.5mol percent of CoO; the oxygen body material of nickel, zinc and ferrum with initial permeability being 20<-4><+4> has broadband, low electromagnetic consumption and good stability in larger working current and can be used for producing various power couplers of high-frequency electrodeless lamps with the working frequency in 80MHz; the material has extremely low electromagnetic consumption in high frequency ranging from 3MHz to 80MHz; when the frequency is 3MHz, the quality factor Q is more than 210; when the frequency is 80MHz, the quality factor Q is more than 100; due to good electromagnetic consumption characteristic in such wide frequency range, the oxygen body material has wide market prospect in a lighting system of novel electroless lamps.

Description

technical field [0001] The invention relates to a nickel-zinc ferrite material that can be used to make power couplers for various high-frequency electrodeless lamps with an operating frequency within 80 MHz, especially a nickel-zinc ferrite material with an initial magnetic permeability of 20 -4 +4 Nickel zinc ferrite material and preparation method thereof. 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 three parts: the excitation power supply, the power coupler and the bulb. The excitation source generates an electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/11C04B35/26C04B35/622B22F9/04
Inventor 胡军顾晔华
Owner TONGXIANG TELIYOU ELECTRONICS SCI & TECH
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