Magnetic bead ceramic load bearing plate for magnetic core

A technology of setter plate and magnetic beads, applied in the field of ceramic setter plate, can solve problems such as affecting the service life of the setter plate and reducing the purity of magnetic core, so as to improve the compressive strength, avoid uneven tiling, and improve the sintering performance Effect

Active Publication Date: 2015-09-30
NANTONG HUAXING MAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common setter material is generally alumina, but during the high-temperature sintering process, the oxide components in the magnetic core are prone to chemical reactions with the setter, which will affect the service life of the setter and reduce the purity of the magnetic core.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A magnetic bead ceramic setter for a magnetic core, comprising a substrate and a magnetic oxide coating,

[0053] The matrix is ​​made of the following components and parts by weight thereof:

[0054] 30 parts of white corundum,

[0055] 25 parts andalusite,

[0056] 15 parts potassium feldspar,

[0057] 15 parts zirconia,

[0058] 7 parts yttrium oxide,

[0059] 7 parts of fused magnesia,

[0060] 7 parts ferric oxide magnetic beads,

[0061] 2 parts alumina micropowder,

[0062] 2 parts of metal silicon powder,

[0063] 2 parts aluminum nitride,

[0064] 2 parts silicon nitride,

[0065] 2 parts silica sol,

[0066] 2 parts surfactant,

[0067] 2 parts toner;

[0068] The magnetic oxide coating is made of the following components and parts by weight thereof:

[0069] 125 parts of water, 27 parts of zinc oxide sol, 7 parts of ferric oxide nano-sol and 2 parts of polyvinyl alcohol;

[0070] The particle size of white corundum is 8 microns; the particle siz...

Embodiment 2

[0079] A magnetic bead ceramic setter for a magnetic core, comprising a substrate and a magnetic oxide coating,

[0080] The matrix is ​​made of the following components and parts by weight thereof:

[0081] 35 parts white corundum,

[0082] 22 parts andalusite,

[0083] 12 parts potassium feldspar,

[0084] 17 parts zirconia,

[0085] 6 parts yttrium oxide,

[0086] 6 parts of fused magnesia,

[0087] 6 parts ferric oxide magnetic beads,

[0088] 2 parts alumina micropowder,

[0089] 2 parts of metal silicon powder,

[0090] 2 parts aluminum nitride,

[0091] 2 parts silicon nitride,

[0092] 2 parts silica sol,

[0093] 2 parts surfactant,

[0094] 2 parts toner;

[0095] The magnetic oxide coating is made of the following components and parts by weight thereof:

[0096] 134 parts of water, 26 parts of zinc oxide sol, 8 parts of ferric oxide nano-sol and 1 part of polyvinyl alcohol;

[0097] The particle size of white corundum is 8 microns; the particle size of f...

Embodiment 3

[0106] A magnetic bead ceramic setter for a magnetic core, comprising a substrate and a magnetic oxide coating,

[0107] The matrix is ​​made of the following components and parts by weight thereof:

[0108] 39 parts of white corundum,

[0109] 24 parts andalusite,

[0110] 15 parts potassium feldspar,

[0111] 15 parts zirconia,

[0112] 6 parts yttrium oxide,

[0113] 6 parts of fused magnesia,

[0114] 6 parts ferric oxide magnetic beads

[0115] 2 parts alumina micropowder,

[0116] 3 parts of metal silicon powder,

[0117] 2 parts aluminum nitride,

[0118] 3 parts silicon nitride,

[0119] 2 parts silica sol,

[0120] 2 parts surfactant,

[0121] 3 parts toner;

[0122] The magnetic oxide coating is made of the following components and parts by weight thereof:

[0123] 134 parts of water, 26 parts of zinc oxide sol, 8 parts of ferric oxide nano-sol and 1 part of polyvinyl alcohol;

[0124] The particle size of white corundum is 7 microns; the particle size ...

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Abstract

The invention discloses a magnetic bead ceramic load bearing plate for a magnetic core, which comprises a substrate and a magnetic oxide coating. White alundum, andalusite, potassium feldspar, zirconia, yttria, fused magnesite and ferroferric oxide magnetic beads serve as main raw materials, and additives such as alumina micropowder, metal silicon powder, aluminum nitride, silicon nitride, silica sol, a surfactant and carbon powder are added, so that physical and chemical properties of the substrate are further optimized; and the coating is prepared by compositing zinc oxide and ferric oxide sol, so that a reaction of magnetic oxide and the substrate is isolated to the greatest extent. The room-temperature compressive strength of the ceramic load bearing plate reaches above 68Mpa; the apparent porosity is above 27%; and the volume density is above 2.9g / cm<3>.

Description

technical field [0001] The invention belongs to the field of ceramic setters, in particular to ceramic setters with magnetic beads for magnetic cores. Background technique [0002] The firing plate is the carrier for sintering electronic components. Its quality and performance have a direct impact on the quality, output, energy consumption, and cost of fired products. During use, the setter plate not only has to withstand the high temperature sintering temperature of electronic components and the pressure brought by the setter product, but also has to withstand repeated cold and heat cycles. Therefore, it is required to have high temperature resistance, high mechanical strength, stable chemical properties, and heat resistance. Good vibration stability and long service life. [0003] The magnetic core is one of the commonly used components in the electronics industry. The magnetic core generally contains iron oxides; during the preparation of the magnetic core product, the m...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/10C04B41/85F27D5/00
Inventor刘贞天
OwnerNANTONG HUAXING MAGNETIC MATERIAL