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Preparation method of new Al4SiC4 layered material

A layered material and a new type of technology, applied in the preparation of new Al4SiC4 layered materials, the field of high-purity new Al4SiC4 layered materials, can solve the problems of difficult machining, poor toughness, high brittleness, etc., to achieve widespread application value, technology Simple process and high purity results

Inactive Publication Date: 2018-12-04
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the main disadvantages of ceramic materials in the traditional sense are that they are relatively brittle, have poor toughness, and are difficult to process by machinery.

Method used

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  • Preparation method of new Al4SiC4 layered material
  • Preparation method of new Al4SiC4 layered material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Using Al(OH) 3 , SiO 2 Provide Al, Si, and C elements with phenolic resin as raw materials, and use the chemical precursor method to synthesize the layered material Al 4 SiC 4 . Firstly, the method of measuring the carbon content in the phenolic resin is as follows: after dissolving a certain amount of phenolic resin in alcohol, put it in a 40°C drying oven to dry to obtain the phenolic resin colloid. Then, put the phenolic resin colloid into a vacuum drying oven heated at the bottom to fully dry and evaporate excess alcohol. Finally, put the dried powder into a multifunctional furnace and keep it warm at 1000°C for 1 hour. The ratio of the obtained carbon powder to the mass of the original phenolic resin is the carbon content of the phenolic resin. After measuring the carbon ratio of the phenolic resin, the powder is mixed, and the molar ratio is Al 2 o 3 :SiO2 2 :C=2:2:12. Put the mixed original powder into alcohol and wet mix it for 24 hours, then dry it in a...

Embodiment 2

[0041] Using Al(OH) 3 , SiO 2 Provide Al, Si, and C elements with phenolic resin as raw materials, and use the chemical precursor method to synthesize the layered material Al 4 SiC 4 . Firstly, the method of measuring the carbon content in the phenolic resin is as follows: after dissolving a certain amount of phenolic resin in alcohol, put it in a drying oven at 50°C to dry to obtain the phenolic resin colloid. Then, put the phenolic resin colloid into a vacuum drying oven heated at the bottom to fully dry and evaporate excess alcohol. Finally, put the dried powder into a multifunctional furnace and keep it warm at 900°C for 1 hour. The ratio of the obtained carbon powder to the mass of the original phenolic resin is the carbon content of the phenolic resin. After measuring the carbon ratio of the phenolic resin, the powder is mixed, and the molar ratio is Al 2 o 3 :SiO2 2 :C=2:1:13. Put the mixed original powder into alcohol and wet mix it for 24 hours, then dry it in...

Embodiment 3

[0043] Using Al(OH) 3 , SiO 2 Provide Al, Si, and C elements with phenolic resin as raw materials, and use the chemical precursor method to synthesize the layered material Al 4 SiC 4 . Firstly, the method of measuring the carbon content in the phenolic resin is as follows: after dissolving a certain amount of phenolic resin in alcohol, put it in a drying oven at 50°C to dry to obtain the phenolic resin colloid. Then, put the phenolic resin colloid into a vacuum drying oven heated at the bottom to fully dry and evaporate excess alcohol. Finally, put the dried powder into a multifunctional furnace and keep it warm at 1000°C for 1 hour. The ratio of the obtained carbon powder to the mass of the original phenolic resin is the carbon content of the phenolic resin. After measuring the carbon ratio of the phenolic resin, the powder is mixed, and the molar ratio is Al 2 o 3 :SiO2 2 :C=2:1:10. Put the mixed original powder into alcohol and wet mix it for 24 hours, then dry it i...

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Abstract

A preparation method of a new Al4SiC4 layered material adopts a scheme that Al(OH)3, SiO2 and phenolic resin are used as raw materials to supply Al, Si and C elements, respectively, and the Al4SiC4 layered material is synthesized by a chemical precursor method; after the carbon content ratio of the phenolic resin is determined, and the powders are mixed, wherein the molar ratio of the mixed powderis as follows: the ratio of Al2O3 to SiO2 to C is (2-3): (1-1.2): (10-14); the mixed raw powder is wet-mixed in alcohol for 24 hours and then dried in a drying box of 50 DEG C to obtain a mixed colloid; the colloid is then placed in a vacuum drying box with the bottom heated to make the colloid fully dry; the obtained powder is ground and is subjected to cold press molding in a mold under the pressure of 100 MPa, the molded material is separately sintered at 1500-1900 DEG C under the protection of Ar; and finally, the obtained powder is subjected to heat preservation in an air furnace at 700DEG C for 12 hours to remove carbon residues from the powder. The prepared Al4SiC4 layered material has high purity, is suitable for large-scale production, has good market prospects and wide application values.

Description

technical field [0001] The invention belongs to the technical field of ceramic material preparation and relates to high-purity novel Al 4 SiC 4 Layered materials, in particular to a novel Al 4 SiC 4 Method for the preparation of layered materials. Background technique [0002] Compared with other types of materials, ceramic materials have the advantages of high strength, corrosion resistance, high temperature resistance, and oxidation resistance, and can be used in harsh environments such as high temperature, high pressure, and corrosion resistance. However, the main disadvantages of ceramic materials in the traditional sense are their high brittleness, poor toughness, and difficulty in processing by machinery. This is because the bonds between atoms in the crystal of traditional ceramic materials are mainly ionic bonds and covalent bonds, both of which are relatively brittle, so a weaker bond type (metal bond or van der Waals force) needs to be introduced inside the cry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/90
CPCC01P2002/72C01P2004/03C01B32/90
Inventor 孙良翟文彦刘长青周勇董会高倩宫少涛
Owner XI'AN PETROLEUM UNIVERSITY
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