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Conductive network configuration coating and preparation method

A technology of conductive network and network structure, which is applied in the direction of coating, metal material coating process, molten spraying, etc., can solve the problems of hindering the performance of porous ceramic materials, environmental damage, and unfavorable high-temperature performance of ceramic materials, etc., to achieve good conductivity , Large specific surface area, high chemical stability

Inactive Publication Date: 2018-08-10
JIANGXI SCI & TECH NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding sintering aids can reduce the sintering temperature, but the existence of low-melting sintering aids is not good for the high-temperature performance of ceramic materials, which hinders the improvement of the performance of porous ceramic materials
At the same time, the extensive use of organic pore-forming agents and foaming agents will also cause serious damage to the environment.

Method used

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  • Conductive network configuration coating and preparation method
  • Conductive network configuration coating and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) 200g of TiB synthesized by high temperature self-propagating method 2 Put the powder in 1000g of deionized water, add 10g of yttrium oxide, 20g of ethylene glycol, and 5g of tannic acid in sequence, and disperse by mechanical ball milling for 4 hours to form a stable slurry;

[0022] (2) the slurry obtained in the previous step is granulated by high-speed centrifugal spraying to obtain agglomerated powder;

[0023] (3) The graphite matrix is ​​decontaminated and cleaned, and then the agglomerated powder in step (2) is used as a feeding material, and the atmospheric plasma spraying technology is used to prepare a coating with a thickness of 250mm. The spraying parameters are: the net power of plasma spraying is 35kW, and the The argon gas is 40 slpm, the hydrogen gas is 11 slpm, the powder feeding carrier gas volume is 4L / min, the spraying distance is 120mm, and the temperature of the base material is controlled at 120°C during the spraying process.

[0024] (4) Imm...

Embodiment 2

[0026] (1) 200g of TiB synthesized by high temperature self-propagating method 2 Put the powder in 1000g of deionized water, add 10g of silicon dioxide, 20g of glycerin, and 5g of Arabic gelatin in sequence, and disperse by mechanical ball milling for 4 hours to form a stable slurry;

[0027] (2) the slurry obtained in the previous step is granulated by high-speed centrifugal spraying to obtain agglomerated powder;

[0028] (3) The graphite matrix is ​​decontaminated and cleaned, and then the agglomerated powder in step (2) is used as a feeding material, and the atmospheric plasma spraying technology is used to prepare a coating with a thickness of 200mm. The spraying parameters are: the net power of plasma spraying is 35kW, The argon gas is 40 slpm, the hydrogen gas is 11 slpm, the powder feeding carrier gas volume is 4L / min, the spraying distance is 120mm, and the temperature of the base material is controlled at 120°C during the spraying process.

[0029] (4) Immerse the c...

Embodiment 3

[0031] (1) 200g of TiB synthesized by metal thermal reduction method 2 Put the powder in 1000g of deionized water, add 10g of yttrium oxide, 20g of polyvinylpyrrolidone, and 5g of tannic acid in sequence, and disperse by mechanical ball milling for 4 hours to form a stable slurry;

[0032] (2) the slurry obtained in the previous step is granulated by high-speed centrifugal spraying to obtain agglomerated powder;

[0033] (3) The graphite matrix is ​​decontaminated and cleaned, and then the agglomerated powder in step (2) is used as a feeding material, and the atmospheric plasma spraying technology is used to prepare a coating with a thickness of 250mm. The spraying parameters are: the net power of plasma spraying is 35kW, and the The argon gas is 40 slpm, the hydrogen gas is 11 slpm, the powder feeding carrier gas volume is 4L / min, the spraying distance is 120mm, and the temperature of the base material is controlled at 120°C during the spraying process.

[0034] (4) Immerse ...

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Abstract

The invention discloses a conductive network configuration coating. The material composition of the conductive network configuration coating is TiB2, the conductive network configuration coating network structure is of a network structure composed of interconnected or closed holes, and the porosity is adjustable from 10 % to 30%. The porosity ratio of 1 [mu]m is 5%, the porosity ratio of 1-15 [mu]m is 70%, the porosity ratio of 15 [mu]m is 25%, and the room temperature conductivity of the conductive network configuration coating is larger than 1x10<5> [omega]<-1>1.m<-1>. The conductive networkconfiguration coating has the characteristics that the conductive network configuration coating is composed of the interconnected or closed holes, the advantages of high chemical stability, good conductivity and corrosion resistance of TiB2 materials are achieved, and the specific surface area is large; and the conductive network configuration coating can be applied in the fields of filtration purification, catalytic, biological separation, energy storage and nanometer reactors.

Description

technical field [0001] The invention belongs to the field of chemical materials, and in particular relates to a conductive network configuration coating and a preparation method. Background technique [0002] Porous ceramic material, also known as porous functional ceramic, is a new type of ceramic material that is fired at high temperature and forms a large number of interconnected or closed pores in the material body during the forming and sintering process. Porous ceramic materials have developed rapidly in recent years due to their porosity, high specific surface area, high adsorption capacity, small air resistance, stable chemical properties, good regeneration performance, high temperature resistance, high pressure resistance, chemical corrosion resistance, and environmental protection. It has been widely used in filtration, purification and separation, catalyst carrier, sound absorption, shock absorption, thermal insulation materials, biological materials, sensor mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/134C23C4/10C23C4/18
Inventor 刘学璋唐文晶
Owner JIANGXI SCI & TECH NORMAL UNIV
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