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Preparation method of stannic oxide ceramic electrode

A technology of tin dioxide and ceramic electrodes, applied in the direction of electrodes, electrolytic process, electrolytic components, etc., to achieve the effects of low resistivity at room temperature, improved corrosion resistance, and reduced firing shrinkage

Active Publication Date: 2014-12-10
ZIBO GT INDAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In summary, in order to improve the electrical conductivity at room temperature and the degree of firing density, the existing technology uses CuO-ZnO-Sb 2 o 3 , CuO-MnO-Sb 2 o 3 , CuO-Pr 6 o 11 -Sb 2 o 3 , CuO-ZnO-Sb 2 o 3 -Zr0 2 And other doping methods, control the firing atmosphere and other measures to manufacture tin dioxide ceramic electrode materials, no addition of nano-SnO 2 Materials as sintering aid options

Method used

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  • Preparation method of stannic oxide ceramic electrode
  • Preparation method of stannic oxide ceramic electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Ingredients: SnO 2 Powder, nano antimony-doped tin dioxide powder, CuO powder, chemical composition and particle size of binder and dispersant are shown in Table 1 below. Wherein the binder is an aqueous solution of polyvinyl alcohol with a concentration of 6%, and the dispersant is an aqueous solution of ammonium polyacrylate with a concentration of 30%.

[0033] Preparation steps:

[0034] Weigh SnO with particle size ≤ 20um in proportion 2 Powder, particle size ≤ 20nm, containing Sb 2 o 3 It is 10% nano-antimony-doped tin dioxide powder and CuO powder with a particle size of ≤5um, which is loaded into a polyurethane-lined ball mill. Then according to the ingredients: binder: dispersant is 1:0.02:0.0075, put it into the ball mill, add water according to the mass ratio of zirconia balls: ingredients: water is 2:1:1, put in zirconia balls, and grind for 30 minutes .

[0035] Pour the uniformly mixed slurry into a container, dry at 110°C for 12 hours, and crush it ...

Embodiment 2-6

[0040] Examples 2-6 adopt the same operation steps as in Example 1, changing the types of raw materials, proportion of ingredients, isostatic pressure and sintering temperature and other conditions. The specific examples and test data are shown in Table 2.

[0041] Table 1. Types and specifications of raw materials

[0042] raw material name

Raw material specification

Maximum particle size

SnO 2 Powder Ⅰ

SnO 2

20um

SnO 2 Powder II

SnO 2

10um

CuO powder

CuO≥99.0%

5um

Nano antimony doped tin dioxide powder Ⅰ

SnO 2 : Sb 2 o 3 =90:10

20nm

Nano antimony doped tin dioxide powder Ⅱ

SnO 2 : Sb 2 o 3 =80:20

30nm

Nano antimony doped tin dioxide powder Ⅲ

SnO 2 : Sb 2 o 3 =90:10

40nm

ammonium polyacrylate

30% aqueous solution

/

polyvinyl alcohol

Grade 1799, 6% aqueous solution

/

[0043] Table two, embodiment and dete...

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Abstract

The invention discloses a preparation method of a stannic oxide ceramic electrode, belonging to the field of a ceramic technology. The method comprises the steps of: by taking nano antimony-doped stannic oxide powder and CuO powder as sintering aids, blending SnO2 powder with the sintering aids; then, adding a dispersing agent and a bonding agent into the mixture obtained from the former step; and carrying out wet grinding, drying, crushing granulation and isostatic compaction and then firing to prepare the stannic oxide ceramic electrode, wherein the mass percent of the SnO2 powder is 83-91% of the ingredients, the mass percent of the nano antimony-doped stannic oxide powder in the sintering aids is 9-17% of the ingredients, and the mass percent of the CuO powder is 0-0.6% of the ingredients. The preparation method is simple in technology and high in product pass rate, and the obtained stannic oxide ceramic electrode is high in density and low in resistivity at the room temperature and the high temperature.

Description

technical field [0001] The invention belongs to the technical field of ceramics, and relates to a preparation method of a tin dioxide ceramic electrode. Background technique [0002] SnO 2 Ceramic electrodes have excellent properties such as strong high-temperature electrical conductivity, resistance to molten glass erosion, not easily replaced by other metal ions in the glass melt, no coloring of the glass, good clarification effect on the glass liquid, and easy removal of bubbles. Widely used in furnaces. But due to SnO 2 The sintering ability is poor, the sintering shrinkage is large, the sintering process is easy to deform and crack, and the room temperature resistance is high. 2 A lot of research has been done on ceramic electrodes. [0003] U.S. Patent U.S.3287284 discloses adding 0.1-0.5% CuO, 0.5-0.8% ZnO, 0.7-1.2% Sb 2 o 3 material, the rest are SnO 2 , making SnO 2 The technology of ceramic electrodes. [0004] The Chinese patent with publication number CN...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/04
Inventor 张启山张瑛李志军孙文礼刘杰冯延春
Owner ZIBO GT INDAL CERAMICS
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