Unlock instant, AI-driven research and patent intelligence for your innovation.

Zinc oxide-based pressure-sensitive ceramic material for lightning arrester as well as preparation method and application of material

A technology of ceramic materials and varistor ceramics, applied in varistors, overvoltage protection resistors, etc., can solve the problems of large leakage current and small nonlinear coefficient, and achieve good product performance, wave absorption ability and high current resistance Strong impact effect

Active Publication Date: 2014-08-27
襄阳市三三电气有限公司
View PDF8 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application number is 200610042720.X (a rare earth oxide doped ZnO-Bi 2 o 3 It is a pressure-sensitive ceramic medium) discloses a pressure-sensitive material that can obtain a potential gradient of 500V / mm, but its nonlinear coefficient is small and the leakage current is large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Zinc oxide-based pressure-sensitive ceramic material for lightning arrester as well as preparation method and application of material
  • Zinc oxide-based pressure-sensitive ceramic material for lightning arrester as well as preparation method and application of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The commercially available indirect zinc oxide with a purity of 99.7% is used as the main component, and its radius particle size is less than 1 micron. The first subcomponent is commercially available chemically pure Bi 2 o 3 ,Co 2 o 3 , MnO 2 , Cr 2 o 3 , NiO; the second subcomponent is commercially available chemically pure Sb 2 o 3 ; The third component is commercially available chemically pure Y 2 o 3 and WO 3 ; The fourth secondary component is commercially available chemically pure Al 2 o 3 .

[0045] The formula of the pressure-sensitive ceramic material is calculated in mole fraction, and the content of each component is as follows:

[0046] Main ingredient: Zinc oxide ZnO 100mol parts

[0047] First subcomponent: bismuth oxide Bi 2 o 3 , 0.7 mol parts dicobalt trioxide Co 2 o 3 , 0.8 mol parts manganese dioxide MnO 2 , 0.5 mol part Chromium trioxide Cr 2 o 3 0.5 mol parts And nickel oxide NiO 0.8mol parts,

[0048] Second subcomp...

Embodiment 2

[0064] The formula of the pressure-sensitive ceramic material is calculated in mole fraction, and the content of each component is as follows:

[0065] Main ingredient: Zinc oxide ZnO 100mol parts

[0066] First subcomponent: bismuth oxide Bi 2 o 3 , 0.7 mol parts dicobalt trioxide Co 2 o 3 , 0.8 mol parts manganese dioxide MnO 2 , 0.5 mol part Chromium trioxide Cr 2 o 3 0.5 mol parts And nickel oxide NiO 0.8mol parts,

[0067] Second subcomponent: antimony trioxide Sb 2 o 3 1.0 mol part;

[0068] The third subcomponent: Diyttrium trioxide Y 2 o 3 0.08 mol parts 、 Tungsten trioxide WO 3 0.5 mol part;

[0069] The fourth subcomponent: aluminum oxide Al 2 o 3 0.005mol parts.

[0070] The preparation method is the same as in Example 1.

[0071] It can be seen from Table 1 that the electrical performance test data of the pressure-sensitive ceramic material obtained by the above-mentioned implementation, Example 2, the small current characteristics...

Embodiment 3

[0074] The formula of the pressure-sensitive ceramic material is calculated in mole fraction, and the content of each component is as follows:

[0075] Main ingredient: Zinc oxide ZnO 100mol parts

[0076] First subcomponent: bismuth oxide Bi 2 o 3 , 0.7 mol parts dicobalt trioxide Co 2 o 3 , 0.8 mol parts manganese dioxide MnO 2 , 0.5 mol part Chromium trioxide Cr 2 o 3 0.5 mol parts And nickel oxide NiO 0.8mol parts,

[0077] Second subcomponent: antimony trioxide Sb 2 o 3 1.0 mol part;

[0078] The third subcomponent: Diyttrium trioxide Y 2 o 3 0.08 mol parts 、 Tungsten trioxide WO 3 0.9 mol parts;

[0079] The fourth subcomponent: aluminum oxide Al 2 o 3 0.005mol parts.

[0080] The preparation method is the same as in Example 1.

[0081] It can be seen from Table 1 that the electrical performance test data of the pressure-sensitive ceramic material obtained by the above implementation, the small current characteristics of the ceramic samp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a zinc oxide-based pressure-sensitive ceramic material for a lightning arrester as well as a preparation method and application of the material. The pressure-sensitive ceramic material comprises the following components by mol parts: 100 parts of ZnO as a main component, 0.2-1.2 parts of each of Bi2O3, Co2O3, MnO2, Cr2O3 and NiO as first auxiliary components, 0.8-1.5 parts of Sb2O3 as a second auxiliary component, 0.04-0.12 part of Y2O3 and 0.1-1.5 parts of WO3 which serve as third auxiliary components, and 0.003-0.008 part of Al2O3 as a fourth auxiliary component. The preparation method comprises the following steps: mixing the components and performing ball-milling through a ball mill, drying, pre-sintering, performing ball-milling, forming, discharging glue, and sintering at 1,080-1,150 DEG C. According to the pressure-sensitive ceramic material, the potential gradient is 400-550V / mm, the nonlinear coefficient is more than 50, and the wave absorption capability and the impulse durability are good.

Description

technical field [0001] The invention relates to a pressure-sensitive ceramic material, in particular to a zinc oxide-based pressure-sensitive ceramic material for a high potential gradient arrester. Background technique [0002] ZnO varistor ceramics is based on ZnO powder, adding trace amounts of other metal additives (such as MnO 2 ,Co 2 o 3 , Bi 2 o 3 , Cr 2 o 3 , Sb 2 o 3 etc.), a polycrystalline semiconductor ceramic material that is sintered at high temperature after mixing and molding. [0003] Varistor ceramic materials can be used to manufacture high-potential gradient varistors, which can be used to manufacture lightning arresters or varistors, which are used in power electronic circuits to absorb abnormal overvoltages to protect circuit systems. Power electronic circuits often cause abnormal overvoltage due to lightning strikes or load switching. ZnO varistor ceramic materials have been widely used in power electronic circuits to absorb or suppress abnorm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453C04B35/622H01C7/12
Inventor 廖继红钟志成屈少华刘畅陈洋杨宇轩李文联郭建勇
Owner 襄阳市三三电气有限公司