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Metal composite mullite-silicon carbide ceramic composite material and preparation method thereof

A silicon carbide ceramic and metal composite technology, applied in the field of ceramic material preparation, can solve the problems of silicon waste not being effectively utilized, and achieve low production cost, low firing temperature, and good thermal shock resistance

Active Publication Date: 2018-10-19
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the global annual output of solar-grade silicon wafers has reached 3.85×10 5 tons per year there will be more than 2.6×10 5 Tons of silicon waste is produced, but these silicon wastes are not effectively utilized. If the problem of silicon waste disposal in the photovoltaic industry can be effectively solved, it will bring great economic and environmental benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The metal composite mullite-silicon carbide ceramic composite material provided by the invention is composed of the following raw materials in mass percentage: kyanite-based mullite 75wt%, industrial silicon powder 5wt%, silicon carbide 20wt%, polyvinyl alcohol and water The mass percentages of the mixed liquor, polyvinyl alcohol and water are respectively 2.5 wt% and 20 wt% of the total mass of the mixed raw materials. Among them, the particle size of industrial silicon powder and silicon carbide is ≤0.1mm; the mullite particle composition is 30wt% of 0-18 mesh, 50wt% of 18-200 mesh, and 20wt% of 200-325 mesh.

[0024] Composite material preparation method: according to the mass percentage of kyanite-based mullite 75wt%, industrial silicon powder 5wt%, and silicon carbide 20wt%, weigh the mixed raw materials; place the weighed mixed raw materials in a planetary mixer, and mix the materials for 4 Hours, add the mixed solution of polyvinyl alcohol and water, its mass per...

Embodiment 2

[0027] The metal composite mullite-silicon carbide ceramic composite material provided by the invention is composed of the following raw materials in mass percentage: kyanite-based mullite 70wt%, industrial silicon powder 15wt%, silicon carbide 15wt%, polyvinyl alcohol and water The mass percentages of the mixed liquor, polyvinyl alcohol and water are respectively 2.5 wt% and 20 wt% of the total mass of the mixed raw materials. Among them, the particle size of industrial silicon powder and silicon carbide is ≤0.1mm; the mullite particle composition is 30wt% of 0-18 mesh, 50wt% of 18-200 mesh, and 20wt% of 200-325 mesh.

[0028] Composite material preparation method: weigh the mixed raw materials according to the mass percentage of 70wt% kyanite-based mullite, 15wt% industrial silicon powder, and 15wt% silicon carbide; place the weighed mixed raw materials in a planetary mixer and mix for 4 hours , add the mixed solution of polyvinyl alcohol and water, its mass percentage is re...

Embodiment 3

[0031] The metal composite mullite-silicon carbide ceramic composite material provided by the invention is composed of the following raw materials in mass percentage: 80wt% of kyanite-based mullite, 5wt% of silicon waste in the photovoltaic industry, 15wt% of silicon carbide, dextrin and For the mixed solution of water, the mass percents of dextrin and water are respectively 15wt% and 20wt% of the total mass of the mixed raw materials. Among them, the particle size of silicon waste and silicon carbide in the photovoltaic industry is ≤0.1mm; the mullite particle composition is 30wt% of 0-18 mesh, 50wt% of 18-200 mesh, and 20wt% of 200-325 mesh.

[0032]Composite material preparation method: according to the mass percentage of kyanite-based mullite 80wt%, silicon waste 5wt% in the photovoltaic industry, and silicon carbide 15wt%, weigh the mixed raw materials; place the weighed mixed raw materials in a planetary mixer, mix After 4 hours, add the mixed solution of dextrin and wat...

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Abstract

The invention relates to a metal composite mullite-silicon carbide ceramic composite material, which is prepared from the following raw materials in percentage by mass: 60 to 80 weight percent of mullite, 4 to 20 weight percent of metal powder and 5 to 20 weight percent of silicon carbide. The invention also provides a preparation method of the composite material. The composite material uses the mullite, the metal powder and the silicon carbide as major raw materials; through low-temperature sintering, the metal composite mullite-silicon carbide ceramic composite material is prepared; the firing temperature is low; the production process is simple and the production cost is low.

Description

technical field [0001] The invention relates to the field of ceramic material preparation, in particular to a metal composite mullite-silicon carbide ceramic composite material and a preparation method thereof. Background technique [0002] Mullite materials have the advantages of good high-temperature mechanical properties, chemical stability, low thermal expansion coefficient and thermal conductivity, and are widely used in the fields of refractory materials, ceramic materials and electronic packaging materials. Silicon carbide has the advantages of high strength, high hardness, high wear resistance and low expansion coefficient, and is widely used in smelting furnace linings, high-temperature kiln components, abrasives and other components. At present, the research on mullite and silicon carbide ceramic materials mainly focuses on mullite-silicon carbide ceramic composite materials and silicon nitride-silicon carbide ceramic composite materials. For example, the patent "...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/622
CPCC04B35/185C04B35/62204C04B2235/3826C04B2235/402C04B2235/428C04B2235/658
Inventor 马成良王世界高金星王斌苗文胜侯卫星
Owner ZHENGZHOU UNIV
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