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Nickel-zinc-ferrite material used for high-frequency non-polar lamp power coupler and preparation method thereof

A power coupler, nickel-zinc ferrite technology, applied in discharge lamps, lighting devices, light sources, etc., can solve the problems of large heat generation and low efficiency of high-frequency induction lamp power couplers, achieve low electromagnetic loss, improve Effects of electromagnetic loss characteristics, good temperature stability characteristics

Inactive Publication Date: 2008-09-10
TONGXIANG TELIYOU ELECTRONICS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a high resistivity device with extremely low electromagnetic loss under high frequency and high current to solve the disadvantages of the above technology, and effectively solve the problem of low efficiency and large heat generation of high frequency electrodeless lamp power coupler. Nickel zinc ferrite material and preparation method for high frequency electrodeless lamp power coupler

Method used

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  • Nickel-zinc-ferrite material used for high-frequency non-polar lamp power coupler and preparation method thereof
  • Nickel-zinc-ferrite material used for high-frequency non-polar lamp power coupler and preparation method thereof
  • Nickel-zinc-ferrite material used for high-frequency non-polar lamp power coupler and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] 1) Selection of raw materials: the nickel-zinc ferrite material used in the high-frequency electrodeless lamp power coupler provided in this embodiment, the main composition is selected from industrially pure Fe 2 o 3 , ZnO, CuO, NiO and CoO.

[0027] 2) Composition design and weighing: according to Fe 2 o 3 49 mol%, ZnO 23 mol%, CuO 2.5 mol%, NiO 25 mol%, and CoO 0.5 mol%.

[0028]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 3 hours.

[0029] 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 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 only spine...

Embodiment 2

[0037] 1) Selection of raw materials: a kind of nickel-zinc ferrite material used for high-frequency electrodeless lamp power coupler provided by the present invention, the main composition selects industrially pure Fe 2 o 3 , ZnO, CuO, NiO and CoO.

[0038] 2) Composition design and weighing: according to Fe 2 o 3 49 mol%, ZnO 31 mol%, CuO 4.8 mol%, NiO 14 mol%, and CoO 1.2 mol%.

[0039] 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.

[0040] 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 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 only sp...

Embodiment 3

[0048] 1) Selection of raw materials: a kind of nickel-zinc ferrite material used for high-frequency electrodeless lamp power coupler provided by the present invention, the main composition selects industrially pure Fe 2 o 3 , ZnO, CuO, NiO and CoO.

[0049] 2) Composition design and weighing: according to Fe 2 o 3 45 mol%, ZnO 27 mol%, CuO 4 mol%, NiO 23 mol%, and CoO 1.0 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 3 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 800°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 that only spinel...

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Abstract

The invention discloses a nickel zinc ferrite material used in a high-frequency electrodeless lamp power coupler and a preparation method, wherein the main phase of the nickel zinc ferrite material is a spinel structure which comprises Fe2O3, ZnO, CuO, NiO and CoO, is characterized in that: the content of each composition is as follows as calculated according to oxide: Fe2O3 is 45 to 49 mol percent; ZnO is 23 to 31 mol percent; CuO is 2.5 to 4.8 mol percent; NiO is 14 to 25 mol percent; and CoO is 0.5 to 1.2 mol percent. The nickel zinc ferrite material, which has higher resistivity, has extremely low electromagnetic loss under high-temperature heavy current and particularly under 2.5 MHz to 3 MHz high frequency; meanwhile, the quality factor Q of the nickel zinc ferrite material is more than 200 all the time; therefore, the nickel zinc ferrite material effectively solves the problems that a high-frequency electrodeless lamp power coupler has low efficiency and high heat productivity. Moreover, the nickel zinc ferrite material also has excellent temperature stability, and the initial permeability of the material is always kept between 300 and 400 under a broad temperature range ranging from minus 20 DEG C to plus 100 DEG C; meanwhile, the specific temperature coefficient of the material is less than 9.0x10<-6>, which is propitious to maintain the operating stability of a power coupler.

Description

technical field [0001] The invention relates to a nickel-zinc ferrite material which has extremely low electromagnetic loss under high frequency and large current and can be used for a power coupler of a high frequency electrodeless lamp and a 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 frequency current above 2Mhz, which is sent to the power coupler through the feeder. When ...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622H01J65/04H05B41/24
Inventor 胡军顾晔华
Owner TONGXIANG TELIYOU ELECTRONICS SCI & TECH
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