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Low-temperature sintered zinc oxide piezoresistor ceramic material, preparation method thereof, and preparation method of resistor

A varistor, low-temperature sintering technology, applied in varistor cores, varistors, resistors, etc., can solve the problems of bismuth oxide volatilization of formula materials, low product flow capacity, and inability to meet product use. , to achieve the effect of ensuring performance, extending service life and hindering migration

Pending Publication Date: 2019-12-27
XIAMEN SUNYEAR ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Zinc oxide varistor ceramic material is a functional material based on zinc oxide. The traditional zinc oxide varistor formula uses Sb-Bi-Co-Mn-Ni-Cr system materials. Due to the presence of raw material chromium oxide, sintering The temperature is high, and the sintering temperature needs to be above 1100°C. The high temperature will easily lead to the volatilization of the formula material bismuth oxide, resulting in the deviation of the proportion. The sintering is complete, the structure of the porcelain body has many defects, and the flow capacity of the product is low, which cannot meet the requirements of the product.

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  • Low-temperature sintered zinc oxide piezoresistor ceramic material, preparation method thereof, and preparation method of resistor
  • Low-temperature sintered zinc oxide piezoresistor ceramic material, preparation method thereof, and preparation method of resistor
  • Low-temperature sintered zinc oxide piezoresistor ceramic material, preparation method thereof, and preparation method of resistor

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Embodiment Construction

[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in further detail below in conjunction with specific examples.

[0021] This embodiment discloses a low-temperature sintered zinc oxide varistor ceramic material, including main materials, sintering aids and trace additives. The main material is composed of the following molar percentage raw materials: zinc oxide (ZnO) ~ 96mol%, bismuth oxide (Bi 2 o 3 ) 1~1.5mol%, antimony oxide (Sb 2 o 3 )1~1.5mol%, cobalt trioxide (Co 2 o 3 )0.8~1.5mol%, manganese carbonate (MnCO 3 )0.7~1.0mol%, nickel trioxide (Ni 2 o 3 )0.5~1.5mol%. All of the above main materials can be obtained through direct purchase. The proportioning composition of the main materials can be shown in Table 1, and Table 1 lists the proportioning schemes of 9 implementations (M1-M9).

[0022] Table 1 Main materials of low-temperature sintered zinc oxi...

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Abstract

The invention discloses a low-temperature sintered zinc oxide piezoresistor ceramic material. The material comprises a main material and a sintering aid, wherein the main material is prepared from thefollowing raw materials: 93 to 96 mol percent of zinc oxide, 1 to 1.5 mol percent of bismuth oxide, 1 to 1.5 mol percent of antimony oxide, 0.8 to 1.5 mol percent of cobaltic oxide, 0.7 to 1.0 mol percent of manganese carbonate and 0.5 to 1.5 mol percent of nicklic oxide. The sintering aid is prepared from the following raw materials in percentage by mass: 0.2-1% of zinc borate. The invention further discloses a preparation method of the low-temperature sintered zinc oxide piezoresistor ceramic material. According to the preparation method of the low-temperature sintered zinc oxide varistor,the sintering aid is added into the main material of the zinc oxide varistor ceramic material, so that the sintering density is ensured during low-temperature sintering, volatilization is reduced, andthe performance of a product is improved.

Description

technical field [0001] The invention relates to the technical field of resistance materials, in particular to a zinc oxide varistor ceramic material, a preparation method thereof and a preparation method of a zinc oxide varistor. Background technique [0002] As a mainstream protective device, zinc oxide varistors are used more and more widely with the improvement of human safety protection awareness: for example, in power systems and electronic circuits, they are used to absorb atmospheric overvoltage and operating overvoltage. The application of conduction energy, demagnetization of generator sets, electrical equipment, semiconductor devices and overvoltage protection of various motors have broad application prospects. [0003] Zinc oxide varistor ceramic material is a functional material based on zinc oxide. The traditional zinc oxide varistor formula uses Sb-Bi-Co-Mn-Ni-Cr system materials. Due to the presence of raw material chromium oxide, sintering The temperature is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453H01C7/112H01C17/28H01C17/30
CPCC04B35/453H01C7/112H01C17/28H01C17/30C04B2235/3298C04B2235/3294C04B2235/3275C04B2235/442C04B2235/3279C04B2235/3409C04B2235/443C04B2235/3293C04B2235/3427C04B2235/608
Inventor 李经仁林康邹海雄张军志
Owner XIAMEN SUNYEAR ELECTRONICS CO LTD
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