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Preparation method of superfine titanium carbonitride powder

A technology of titanium carbonitride and titanium dioxide, which is applied in the field of ultrafine titanium carbonitride powder preparation, can solve the problems of low product output, low product purity, and high production cost, and achieve high output, improve product purity, and improve product quality. Yield effect

Active Publication Date: 2019-02-15
CHENGDU MET CERAMIC ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of high production cost, low product yield and low product purity in the above-mentioned prior art, the present invention provides a preparation method of ultrafine titanium carbonitride powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of ultrafine titanium carbonitride powder, comprising the following steps:

[0025] S1: First, the carbon black and titanium dioxide are prepared according to the weight ratio of 1:2, the titanium dioxide is selected from anatase titanium dioxide, the purity of the titanium dioxide is 99%, and the C content in the carbon black is 98.5%, and then the prepared raw materials are fed. Put it into a ball mill, perform sufficient ball milling in absolute ethanol with paraffin added and mix it evenly to obtain a mixture. Material ratio 3:1;

[0026] S2: drying the mixed material, and then granulating it by a granulator to obtain mixed material granules, and the particle size of the mixed material granule is controlled at 0.5-1.0 mm;

[0027] S3: the mixture pellets are loaded into a carbonization furnace for carbonization treatment to obtain a crude titanium carbonitride product. The carbonization treatment conditions are as follows: the temperature is co...

Embodiment 2

[0030] A preparation method of ultrafine titanium carbonitride powder, comprising the following steps:

[0031] S1: First, the carbon black and titanium dioxide are prepared according to the weight ratio of 1:3, the titanium dioxide is selected from anatase titanium dioxide, the purity of the titanium dioxide is 99%, and the C content in the carbon black is 98.5%, and then the prepared raw materials are mixed. Feed into a ball mill, fully ball-mill in absolute ethanol with paraffin added and mix evenly to obtain a mixture. The ratio of ball to material is 3:1;

[0032] S2: drying the mixed material, and then granulating it by a granulator to obtain mixed material granules, and the particle size of the mixed material granule is controlled at 0.5-1.0 mm;

[0033] S3: the mixed material pellets are loaded into a carbonization furnace for carbonization treatment to obtain a crude titanium carbonitride product. The carbonization treatment temperature is controlled at 1580°C for th...

Embodiment 3

[0036] A preparation method of ultrafine titanium carbonitride powder, comprising the following steps:

[0037] S1: First, the carbon black and titanium dioxide are prepared according to the weight ratio of 1:4, the titanium dioxide is selected from anatase titanium dioxide, the purity of the titanium dioxide is 99%, and the C content in the carbon black is 98.5%, and then the prepared raw materials are fed. Put it into a ball mill, perform sufficient ball milling in absolute ethanol with paraffin added and mix it evenly to obtain a mixture. Material ratio 3:1;

[0038] S2: drying the mixed material, and then granulating it by a granulator to obtain mixed material granules, and the particle size of the mixed material granule is controlled at 0.5-1.0 mm;

[0039] S3: The mixture pellets are loaded into a carbonization furnace for carbonization treatment to obtain a crude titanium carbonitride product. The carbonization treatment conditions are as follows: the temperature is co...

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Abstract

The invention discloses a preparation method of superfine titanium carbonitride powder and belongs to the technical field of nano ceramic powder preparation. The preparation method comprises the following steps: S1, grinding titanium dioxide and carbon black into absolute ethyl alcohol with paraffin and uniformly mixing the mixture to obtain a mixed material; S2, drying the mixed material to granulate to obtain mixed particles; S3, feeding the mixed particles to a continuous graphite carbon tube furnace for carbonitriding and controlling the reaction temperature and the reaction atmosphere toobtain a titanium carbonitride coarse product; and S4, removing free carbon and impurities from titanium carbonitride coarse product to obtain a titanium carbonitride product. The titanium carbonitride prepared by the invention has the advantages of being low in cost, high in yield and high in product purity.

Description

technical field [0001] The invention belongs to the technical field of nano-ceramic powder preparation, in particular to a preparation method of ultrafine titanium carbonitride powder. Background technique [0002] Titanium carbide is a steel-grey crystal with metallic luster. The crystal structure belongs to the typical NaCl structure, and the lattice constant a=0.4320nm. At 20°C, the density of titanium carbide is 4.91g / cm3, the melting point is 3150±10°C, the boiling point is 4300°C, and the Mohs hardness is 9.5, second only to diamond in hardness. Titanium carbide has good heat transfer properties and electrical conductivity. With the increase of temperature, its electrical conductivity decreases, which shows that titanium carbide has the properties of metal. Titanium carbide also has excellent oxidation resistance, chemical stability and thermal stability, and can be widely used in electronic, chemical and microelectronics industries. [0003] Titanium carbonitride is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/58C04B35/626
CPCC04B35/58021C04B35/626C04B2235/46C04B2235/781C04B2235/785
Inventor 邱嵩颜焰刘毅黄建华
Owner CHENGDU MET CERAMIC ADVANCED MATERIALS
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