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A co-doped tio 2 Methods of varistor ceramics, co-doped tio 2 Varistor and its preparation method

A technology of varistor ceramics and varistors, which is applied in the field of co-doped TiO2 varistor ceramics, and can solve the problem of low nonlinear coefficient

Inactive Publication Date: 2016-12-07
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent still has the disadvantage of low nonlinear coefficient

Method used

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  • A co-doped tio <sub>2</sub> Methods of varistor ceramics, co-doped tio <sub>2</sub> Varistor and its preparation method
  • A co-doped tio <sub>2</sub> Methods of varistor ceramics, co-doped tio <sub>2</sub> Varistor and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The co-doped TiO 2 Varistor ceramics include the following mass percentage components: Ge0.3%, GeO 2 0.9%, V 2 o 5 and Y 2 o 3 Each accounts for 0.5%, and the rest is TiO 2 .

[0029] The co-doped TiO 2 The method of pressure-sensitive ceramics, its specific steps are as follows:

[0030] Step 1, first put Ge, GeO 2 , V 2 o 5 , Y 2 o 3 Add to TiO 2 In the mixed material, Ge accounts for 0.3% of the mixed material molar percentage in the mixed material, and GeO 2 Accounting for 0.9% mole percent of mixed material, V 2 o 5 and Y 2 o 3 Each accounts for 0.5% molar percentage of the mixed material; doping Ge can also act as a sintering aid and reduce the sintering temperature;

[0031] Step 2. Put the mixed material prepared in step 1 in a ball mill tank, add water and alcohol to ball mill and mix for 8 hours, dry and sieve the mixed material after ball milling (put it in a drying oven at 80°C and dry it at 320°C Mesh standard sieve) granulation (the drie...

Embodiment 2

[0042] The co-doped TiO 2 Varistor ceramics include the following mass percentage components: Ge0.3%, GeO 2 0.9%, V 2 o 5 and Y 2 o 3 Each accounts for 0.5%, and the rest is TiO 2 .

[0043] The co-doped TiO 2 The method of pressure-sensitive ceramics, its specific steps are as follows:

[0044] Step 1, first put Ge, GeO 2 , V 2 o 5 , Y 2 o 3 Add to TiO 2 In the mixed material, Ge accounts for 0.3% of the mixed material molar percentage in the mixed material, and GeO 2 Accounting for 0.9% mole percent of mixed material, V 2 o 5 and Y 2 o 3 Each accounts for 0.5% molar percentage of the mixed material; doping Ge can also act as a sintering aid and reduce the sintering temperature;

[0045] Step 2. Put the mixed material prepared in step 1 in a ball mill tank, add water and alcohol to ball mill and mix for 8 hours, dry and sieve the mixed material after ball milling (put it in a drying oven at 80°C and dry it at 320°C Mesh standard sieve) granulation (the drie...

Embodiment 3

[0056] The co-doped TiO 2 Varistor ceramics include the following mass percentage components: Ge0.3%, GeO 2 0.9%, V 2 o 5 and Y 2 o 3 Each accounts for 0.5%, and the rest is TiO 2 .

[0057] The co-doped TiO 2 The method of pressure-sensitive ceramics, its specific steps are as follows:

[0058] Step 1, first put Ge, GeO 2 , V 2 o 5 , Y 2 o 3 Add to TiO 2 In the mixed material, Ge accounts for 0.3% of the mixed material molar percentage in the mixed material, and GeO 2 Accounting for 0.9% mole percent of mixed material, V 2 o 5 and Y 2 o 3 Each accounts for 0.5% molar percentage of the mixed material; doping Ge can also act as a sintering aid and reduce the sintering temperature;

[0059] Step 2. Put the mixed material prepared in step 1 in a ball mill tank, add water and alcohol to ball mill and mix for 8 hours, dry and sieve the mixed material after ball milling (put it in a drying oven at 80°C and dry it at 320°C Mesh standard sieve) granulation (the drie...

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Abstract

The invention relates to a method for codoping TiO2 voltage-sensitive ceramic, a codoped TiO2 piezoresistor and a preparation method of the TiO2 voltage-sensitive ceramic, and belongs to the technical fields of electrical elements and material manufacturing of the electrical elements. The method comprises the following steps: firstly, adding Ge, GeO2, V2O5 and Y2O3 to TiO2 to obtain a mixture; carrying out wet-milling, drying, sieving and pelletizing the mixture, further sieving, and pressing powder into small disks; and heating the small disks, discharging glue, thermally sintering and cooling to a room temperature to prepare (Ge, GeO2, V2O5 and Y2O3) codoped TiO2 voltage-sensitive ceramic. The voltage-sensitive ceramic surface is processed, is subjected to silver electrode firing by an electrode, and then is encapsulated to obtain the (Ge, GeO2, V2O5 and Y2O3) codoped TiO2 piezoresistor. The performance of a TiO2-based voltage-sensitive ceramic resistor is improved.

Description

technical field [0001] The invention relates to a co-doped TiO 2 Methods for varistor ceramics, co-doped TiO 2 A piezoresistor and a preparation method thereof belong to the technical field of electrical components and material manufacturing thereof. Background technique [0002] TiO 2 The varistor was first researched and developed abroad in the 1980s. TiO 2 The varistor has the double excellent characteristics of low voltage sensitive voltage and high dielectric coefficient, strong surge resistance, simple process, no need to reduce and burn at high temperature, save heat treatment, and can be fired in the atmosphere at one time, reducing the cost Greatly reduced, it is a promising compound functional resistance element. [0003] The relatively mature varistors made at home and abroad are mainly ZnO and SrTiO 3 For these two types, their manufacturing process is more complicated, especially in SrTiO 3 Atmosphere control, complex sintering curve of ZnO, etc. Not onl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/115C04B35/46C04B35/622
Inventor 甘国友康昆勇严继康易建红杜景红张家敏刘意春鲍瑞谈松林赵文超荣雪全王志敏
Owner KUNMING UNIV OF SCI & TECH
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