Low-temperature sintering iron, nickel, zinc and copper-based soft magnetic ferrite material and preparation method thereof

A technology of soft ferrite and low-temperature sintering, which is applied in the direction of magnetism of inorganic materials, can solve the problems of large influence on the electromagnetic properties of materials and grain growth, and achieve the advantages of simple preparation method, low pre-firing temperature and low firing temperature Effect

Inactive Publication Date: 2019-10-25
SHANDONG GREEN TEC MOTOR DRIVEN TECH
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Problems solved by technology

[0006] Add Bi 2 o 3 Although the cost is low, the cooling effect is good, and the operation is convenient; but Bi 2 o 3 It has a great influence on the electromagnetic properties of materials, and it is easy to cause abnormal grain growth, and Bi is a heavy metal element, so it is less and less used

Method used

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  • Low-temperature sintering iron, nickel, zinc and copper-based soft magnetic ferrite material and preparation method thereof
  • Low-temperature sintering iron, nickel, zinc and copper-based soft magnetic ferrite material and preparation method thereof
  • Low-temperature sintering iron, nickel, zinc and copper-based soft magnetic ferrite material and preparation method thereof

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Embodiment Construction

[0022] The present invention adopts the Fe of analytical purity 2 o 3 , NiO, ZnO, and CuO as raw materials to prepare the main crystal phase, and the purity is the analytically pure CaCO 3 、H 3 BO 3 , SiO 2 Prepare CBS glass and carry out doping. The specific implementation method is as follows: weigh the ingredients according to Table 1, put the mixture into a stirring ball mill tank, and ball mill for 2 to 6 hours at a speed of 1:2:0.8. 260 rpm. The particle size is controlled at D 50 = within 1.2μm, press-filter the ball-milled material, dry it in an oven at 100°C, pass through a 40-mesh sieve after crushing, pre-fire in a box-type resistance furnace under the condition of 870°C / 4H, and pass through a 40-mesh sieve after crushing Standby; add sintering aid CBS according to the ratio in Table 1, carry out secondary ball milling, press filtration, drying, pass through 80 mesh sieve after crushing, add PVA (polyvinyl alcohol) to granulate, and use a manual press to form ...

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Abstract

The invention discloses a low-temperature sintering iron, nickel, zinc and copper-based soft magnetic ferrite material and a preparation method thereof, and belongs to the technical field of electronic information functional materials and devices. According to the low-temperature sintering iron, nickel, zinc and copper-based soft magnetic ferrite material and the preparation method thereof, an oxide of iron, nickel, zinc and copper is used as a main component, CBS glass is used as sintering aids, and a solid-phase reaction method is adopted and the preparation method of the low-temperature sintering iron, nickel, zinc and copper-based soft magnetic ferrite material comprises the steps of ball-milling, drying, presintering, secondary ball-milling, drying, smashing and sieving and the like.The low-temperature sintering iron, nickel, zinc and copper-based soft magnetic ferrite material has the characteristics of low sintering temperature, higher self-resonance frequency, high quality factor, high resistance and the like, can be used for manufacturing peal magnetic beads and chip inductor, and solves the problem that a magnetic body and a silver electrode cannot be cofired well.

Description

technical field [0001] The invention belongs to the technical field of electronic information functional materials and devices, and specifically relates to a soft magnetic ferrite material with the characteristics of low sintering temperature, high self-resonant frequency, high quality factor and high impedance and a preparation method thereof. It can be used to make spike magnetic beads, chip inductors, and solve the problem that magnets and silver electrodes cannot be co-fired well. Background technique [0002] At present, FeNiCuZn and FeMgCuZn are the main soft ferrite materials for low-temperature sintered multilayer chip inductors at home and abroad. Because they need to be co-sintered with pure silver inner conductors at about 900 ° C, different quantities are generally added in the formula design. and other burning aids, and the most commonly used burning aid is Bi 2 o 3 . [0003] (1) Add Bi 2 o 3 The working principle of burning aid: because Bi 2 o 3 The mel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/30C04B35/626C04B35/64H01F1/36
CPCC04B35/265C04B35/62605C04B35/64H01F1/36C04B2235/365C04B2235/3284C04B2235/3281C04B2235/3279C04B2235/656C04B2235/6567C04B2235/77
Inventor 王明东戴文金
Owner SHANDONG GREEN TEC MOTOR DRIVEN TECH
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