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A ceramic setter and its preparation method

A setter and ceramic technology, applied in the field of ceramic materials, can solve the problems of difficult determination and control of dosage, poor resistance to cold and heat cycles, waste of labor and materials, etc., to avoid thermal stress, not easy to deform or crack, and long service life long effect

Active Publication Date: 2020-08-04
广东羚光新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main types of setter plates used in the firing of zinc oxide varistor products in the industry: one is setter plates made of zinc oxide varistor waste, which has low strength and cold resistance. Poor thermal cycle ability, easy to deform, crack, and short service life; the other is ordinary zirconia setter plate with coarse zirconium powder or waste zinc oxide powder on the surface, although this setter plate can guarantee the zinc oxide pressure sensitive The various performances of resistance products, but each time it is used, it is necessary to manually spread coarse zirconium powder or waste zinc oxide powder. Waste of material and therefore higher production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The ceramic setter of this embodiment includes the following raw materials in parts by mass: 96 parts of yttria-stabilized zirconia with a yttrium oxide content of (3-10) mol%, 2 parts of zinc oxide, 1.7 parts of bismuth oxide, and 0.2 part of antimony oxide , 0.07 parts of nickel oxide, and 0.03 parts of trimanganese tetraoxide.

[0033] The particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percentage, 15-50 mesh accounts for 13%, 50-300 mesh accounts for 33%, and greater than 325 mesh accounts for 54%.

[0034] The binder used in the ceramic setter is polyvinyl alcohol aqueous solution with a mass concentration of 25%. The additive amount of the binder is 5% of the total mass of raw materials.

[0035] The preparation method of described ceramic setter plate comprises the following steps:

[0036] (1) Put each raw material powder into the mixer according to the ratio and mix them evenly.

[0037] (2) Add the binder to the...

Embodiment 2

[0044]The ceramic setter of this embodiment includes the following raw materials in parts by mass: 94 parts of yttria-stabilized zirconia with a yttria content of (3-10) mol%, 4 parts of zinc oxide, 1.5 parts of bismuth oxide, and 0.4 part of antimony oxide , 0.06 parts of nickel oxide, and 0.04 parts of trimanganese tetraoxide.

[0045] The particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percentage, 15-50 mesh accounts for 12%, 50-300 mesh accounts for 39%, and greater than 325 mesh accounts for 49%, wherein the molar percentage of yttrium oxide is 3-10 %.

[0046] The binder used in the ceramic setter is a carboxymethyl cellulose aqueous solution with a mass concentration of 20%. The added amount of the binding agent is 6% of the total mass of raw materials.

[0047] The preparation method of the ceramic setter of this embodiment is the same as that of Embodiment 1.

[0048] After performance testing, the apparent porosity of ...

Embodiment 3

[0050] The ceramic setter of this embodiment includes the following raw materials in parts by mass: 97 parts of yttria-stabilized zirconia with a yttrium oxide content of (3-10) mol%, 1 part of zinc oxide, 1.4 parts of bismuth oxide, and 0.5 part of antimony oxide , 0.05 parts of nickel oxide, and 0.05 parts of trimanganese tetraoxide.

[0051] The particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percentage, 15-50 mesh accounts for 18%, 50-300 mesh accounts for 35%, and greater than 325 mesh accounts for 47%.

[0052] The binder used in the ceramic setter is a dextrin aqueous solution with a mass concentration of 15%. The added amount of the binding agent is 7% of the total mass of raw materials.

[0053] The preparation method of the ceramic setter of this embodiment is the same as that of Embodiment 1.

[0054] After performance testing, the apparent porosity of the ceramic setter plate of this embodiment is 12%, and the flexura...

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Abstract

The invention relates to a ceramic load bearing board which comprises the following raw materials in parts by weight: 90-98 parts of yttrium oxide-stabilized zirconium oxide, 1-5 parts of zinc oxide,0.8-3 parts of bismuth oxide, 0.1-0.6 part of antimony oxide, 0.05-0.1 part of nickel oxide and 0.03-0.06 part of manganese oxide. A preparation method for the ceramic bearing board comprises the following steps: mixing materials, adding a binder, baking, pelletizing, carrying out mold-pressing, drying and burning. The ceramic bearing board has the advantages of high strength, high temperature resistance, corrosion resistance, long service life, convenience in use, simple preparation, and the like, and is especially suitable for bearing and baking a zinc oxide piezoresistor.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a ceramic setter and a preparation method thereof. Background technique [0002] Setter is a kind of functional ceramic, which is the carrier of electronic components in the sintering process. Its quality and performance directly affect the quality, output, energy consumption and cost of fired products. The main performance requirements that a qualified setter plate needs to meet are: no deformation, no cracking, stable chemical properties and good thermal shock resistance when electronic components are sintered at high temperature. [0003] At present, there are two main types of setter plates used in the firing of zinc oxide varistor products in the industry: one is setter plates made of zinc oxide varistor waste, which has low strength and cold resistance. Poor thermal cycle ability, easy to deform, crack, and short service life; the other is ordinary zirconia sette...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 冯震乾万广宇谭汝泉宋先刚王惠敏
Owner 广东羚光新材料股份有限公司
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