Porous ceramics composition, preparation method and application thereof

A composition and porosity technology, which is applied in the field of porous ceramic composition and its preparation, can solve the problems such as inability to achieve satisfactory results, and achieve the effects of low production cost, uniform pore size distribution, and easy process control.

Inactive Publication Date: 2010-12-15
麦乔智 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for sintering methods at different temperatures and pressures, as well as adding various sintering binders and additives, to reduce silicon ca

Method used

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  • Porous ceramics composition, preparation method and application thereof
  • Porous ceramics composition, preparation method and application thereof
  • Porous ceramics composition, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The raw materials of the porous ceramic composition are composed of powder main material, binder, pore forming agent and dispersant. According to the mass ratio, the powder main material: binder: pore forming agent: dispersant is 1 :0.05:0.3:0.3.

[0039] The main materials of the powder and granular body are silicon carbide powder and boron nitride powder.

[0040] The metal powders are titanium powders.

[0041] The metal powders are titanium oxide powders or zirconium oxide powders.

[0042] The binder is selected from borate and aluminate composed of at least one element of Group 3A or Group 4A, Group 5A, Group 6A, alkali metal group and alkaline earth metal group in the periodic table of chemical elements. Salt, aluminosilicate, carbonate, silicate, phosphate and other metal salts.

[0043] The void former is selected from titanium.

[0044] The dispersant is selected from hydrocarbons or water, and the hydrocarbons are selected from at least one of alcohols, e...

Embodiment 2

[0049] Similar to Example 1, the difference is that the mass ratio of the main powder and granular material: binder: hole forming agent: dispersant is 1:0.1:0.4:0.2.

[0050] The main material of the powder is non-metal powder or metal powder; the non-metal powder is silicon carbide powder, or aluminum nitride powder and silicon nitride powder.

[0051] The metal powder is zirconium powder, or vanadium powder and aluminum powder, or vanadium oxide powder, or aluminum oxide powder and zinc oxide powder.

[0052] The binder is selected from borates and aluminates composed of at least one element of Group 3A, Group 4A, Group 5A, Group 6A, alkali metal group and alkaline earth metal group in the periodic table of chemical elements. Salt, aluminosilicate, carbonate, silicate, phosphate and other metal salts.

[0053] The hole forming agent is aluminum.

[0054] The dispersant is selected from hydrocarbons or water, and the hydrocarbons are selected from at least one of alcohols, ...

Embodiment 3

[0056] Similar to Example 1, the difference is that the mass ratio of the main powder and granular material: binder: hole forming agent: dispersant is 1:0.25:0.1:0.5.

[0057] The main material of the powder is non-metal powder or metal powder; the non-metal powder is aluminum nitride powder, or silicon nitride powder and silicon-aluminum carbon powder.

[0058] The metal powder is zinc powder, or manganese powder and iron powder, or aluminum oxide powder and iron oxide powder.

[0059] The binder is selected from borates and aluminates composed of at least one element of Group 3A, Group 4A, Group 5A, Group 6A, alkali metal group and alkaline earth metal group in the periodic table of chemical elements. Salt, aluminosilicate, carbonate, silicate, phosphate and other metal salts.

[0060] The hole forming agent is copper.

[0061] The dispersant is selected from hydrocarbons or hydrocarbons, and the hydrocarbons are selected from at least one of alcohols, ethers, lipids, alip...

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Abstract

The invention provides a porous ceramics composition, a preparation method and application thereof, relating to a ceramic material. The porous ceramics composition comprises the following raw materials of 1 percent of powder particle body as a major material, 0.05-0.5 percent of binding agent, 0.01-0.4 percent of pore generating agent and 0.01-0.5 percent of dispersing agent. The preparation method comprises the steps of: adding the binding agent, the pore generating agent and the dispersing agent in the powder particle body used as the major raw material, mixing and stirring to obtain slurry; and carrying out a wet processing method or dry processing method on the slurry to obtain the finished product. The porous ceramics composition can be applied to the fields of a heat radiating assembly, a heating assembly, a heat exchange assembly, a heat conduction assembly, a heat insulation assembly, a catalytic catalyst carrier, a filtering assembly, a power generating assembly, a light-emitting assembly, a temperature-sensing assembly, a pressure-sensing assembly, a light-sensing assembly, a high temperature electrolysis isolation membrane assembly, a far infrared emitting assembly, an electromagnetic radiation reducing assembly, a battery assembly, a semiconductor module, a dehumidifying assembly, a water seepage brick, a drill cutting assembly, a die assembly and the like.

Description

technical field [0001] The invention relates to a ceramic material, in particular to a porous ceramic composition and its preparation method and application. Background technique [0002] Since silicon carbide (SiC) ceramics have the advantages of high temperature resistance, high hardness, wear resistance, corrosion resistance, oxidation resistance, high thermal conductivity and high electrical conductivity, and good thermal stability, silicon carbide ceramics are a good high temperature (1400 ℃ above) structural ceramic materials, which are widely used. The sintering temperature used in the existing silicon carbide ceramic body manufacturing process is generally 1160-1350°C. In addition to being unable to reduce the sintering temperature, it is also unavoidable to emit toxic waste gas during the sintering process, causing environmental pollution. [0003] Silicon carbide products have been used on a large scale in the ceramic industry to make furnace structural materials,...

Claims

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Application Information

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IPC IPC(8): C04B38/02C22C29/06C22C29/16
Inventor 麦乔智黄书郎
Owner 麦乔智
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