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Initial magnetic-inductive capacity 100 (+20) (-20) 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, reduce usage Small, the effect of improving the electromagnetic loss characteristics

Inactive Publication Date: 2008-10-15
TONGXIANG TELIYOU ELECTRONICS SCI & TECH
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  • Abstract
  • Description
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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 usually has a low resistivity, and since the operating frequency of the high-frequency electrodeless lamp is usually 2.5MHz to 3MHz, 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 100 (+20) (-20) nickel-zinc ferrite material and preparation method
  • Initial magnetic-inductive capacity 100 (+20) (-20) nickel-zinc ferrite material and preparation method
  • Initial magnetic-inductive capacity 100 (+20) (-20) nickel-zinc ferrite material and preparation method

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Embodiment 1

[0032] 1) Selection of raw materials: This embodiment provides a nickel-zinc ferrite material with an initial permeability of 112 and a preparation method, and the raw material is 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 16mol%, MnCO 3 It is 1 mol%, NiO is 33.7 mol%, and CoO is 0.3 mol%.

[0034] 3) Mixing of raw materials: Put the weighed raw materials into a sand mill, add deionized water, the weight of the deionized water is 1.2 times the total weight of the 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 calcining, XRD phase analysis was performed on the calcined material, and it was determined that only the spinel structure existed in the calcined material, and the...

Embodiment 2

[0043] 1) Selection of raw materials: This embodiment provides a nickel-zinc ferrite material with an initial permeability of 102 and a preparation method, and the raw material is 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 12.4mol%, MnCO 3 It is 0.1 mol%, NiO is 40 mol%, and CoO is 1.5 mol%.

[0045] 3) Mixing of raw materials: Put the weighed raw materials into a sand mill, add deionized water, the weight of the deionized water is 1.2 times the total weight of the 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 in the furnace. After calcining, XRD phase analysis was performed on the calcined material, and it was determined that only the spinel st...

Embodiment 3

[0054] 1) Selection of raw materials: This embodiment provides a nickel-zinc ferrite material with an initial permeability of 92 and a preparation method, and the raw material is industrially pure Fe 2 O 3 , ZnO, MnCO 3 , NiO and CoO.

[0055] 2) Composition design and weighing: according to Fe 2 O 3 Is 49mol%, ZnO is 10mol%, MnCO 3 It is 0.4 mol%, NiO is 40 mol%, and CoO is 0.6 mol%.

[0056] 3) Mixing of raw materials: Put the weighed raw materials into a sand mill, add deionized water, the weight of the deionized water is 1.2 times the total weight of the 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 in the furnace. After calcining, XRD phase analysis was performed on the calcined material, and it was determined that only the spine...

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Abstract

The invention discloses an oxygen body material of nickel, zinc and ferrum with initial permeability being 100<-20><+20> and a preparation method thereof. The main phase of the material is spinel structure, and the material essentially consists of Fe2O3, ZnO, MnO, NiO and CoO, and the contents of composition calculated by oxide are: 46mol percent to 49mol percent of Fe2O3, 10mol percent to 16mol percent of ZnO, 0.1mol percent to 1.0mol percent of MnO, 33.7mol percent to 40mol percent of NiO and 0.3mol percent to 1.5mol percent of CoO; the oxygen body material of nickel, zinc and ferrum with initial permeability being 100<-20><+20> has broadband, low electromagnetic consumption and good temperature stability in larger working current; the material has extremely low electromagnetic consumption in high frequency ranging from 2.5MHz to 3MHz; as the oxygen body material of nickel, zinc and ferrum provided by the method of the invention has broadband, low electromagnetic consumption and good temperature stability in larger working current, the temperature coefficient thereof is less than 15.0 multiplied by 10<-6> with the temperature rranging from -20 DEG C to 100 DEG C, thus being beneficial to working stability of a power coupler; the oxygen body material of nickel, zinc and ferrum can also be used for producing various power couplers of high-frequency electrodeless lamps with the working frequency in range of 2.5MHz to 3MHz.

Description

Technical field [0001] The invention relates to a nickel-zinc ferrite material that can be used in various high-frequency electrodeless lamp power couplers, in particular to an initial permeability of 100 -20 +20 Ni-Zn ferrite material and preparation method. Background technique [0002] High Frequency Electronic Discharge Lamp is a high-tech new type of light source that integrates the latest electronic power saving technology and electric light source technology. It does not use filaments and uses a magnetic field to excite gas discharge and light. It is highly energy-saving and environmentally friendly. , Long life and many other advantages. The high-frequency electrodeless lamp is composed of three parts: an excitation power supply, a power coupler and a bulb. The excitation source generates an electric frequency current above 2MHz, which is sent to the power coupler through the feeder. When high-frequency current passes through the power coupler, a high-frequency electroma...

Claims

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Application Information

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