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Preparation of titanium carbide micro powder

A technology of titanium carbide micropowder and titanium powder, applied in the field of preparation of titanium carbide micropowder

Inactive Publication Date: 2011-04-06
WEIFANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purity of the synthetic product is low and the purification is difficult;
[0011] In summary, in the process of preparing TiC, there are some problems such as high preparation cost, difficult purification, high conversion temperature, high yield, or even quality. The improvement is limited, or high-purity, fine Ti powder is required as a raw material, or the shape of titanium carbide is difficult to control and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The first step: weighing micron-sized titanium powder and sucrose according to the mass ratio of titanium powder: sucrose ratio = 47: 43.2;

[0036] The second step: mix the raw material powder according to the composition ratio, and then wet mill on the ball mill for 24 hours, the ball-to-material ratio is 3:1, the ball mill speed is 240rpm, and the ball mill medium is alcohol;

[0037] Step 3: Dry the mixed slurry after ball milling in a drying box, the drying temperature is 50°C, and the drying time is 36 hours;

[0038] Step 4: Put the dried massive material into boiling soybean salad oil for carbonization, and the carbonization time is 10 to 40 minutes to obtain porous massive carbonized material.

[0039] Step 5: Break the porous block solid obtained after carbonization, and dry it in a drying box to remove oil. The drying temperature is 200°C and the drying time is 24 hours;

[0040] Step 6: Put the deoiled material into the burning boat, ignite the self-propaga...

Embodiment 2

[0043] The first step: weighing micron-sized titanium powder and sucrose according to the mass ratio of titanium powder: sucrose ratio = 47: 39.2;

[0044] The second step: mix the raw material powder according to the composition ratio, and then wet mill on the ball mill for 60 hours, the ball-to-material ratio is 3:1, the ball mill speed is 120rpm, and the ball mill medium is alcohol;

[0045] Step 3: Dry the mixed slurry after ball milling in a drying box, the drying temperature is 90°C, and the drying time is 24 hours;

[0046] Step 4: put the dried bulk material into boiling peanut oil for carbonization, and the carbonization time is 10 to 40 minutes to obtain porous block carbonized material.

[0047] Step 5: Break the porous blocky solid obtained after carbonization, and dry it in a drying box to remove oil. The drying temperature is 50°C and the drying time is 36 hours;

[0048] Step 6: Put the deoiled material into the burning boat, ignite the self-propagating reactio...

Embodiment 3

[0051] The first step: weighing micron-sized titanium powder and sucrose according to the mass ratio of titanium powder: sucrose ratio = 47: 36.4;

[0052] The second step: mix the raw material powder according to the composition ratio, and then wet mill it on a ball mill for 48 hours, the ball-to-material ratio is 3:1, the ball mill speed is 180rpm, and the ball mill medium is alcohol;

[0053] Step 3: Dry the mixed slurry after ball milling in a drying oven at a drying temperature of 70°C and a drying time of 30 hours;

[0054] Step 4: put the dried bulk material into boiling rapeseed oil for carbonization, and the carbonization time is 10 to 40 minutes to obtain porous block carbonized material.

[0055]Step 5: Break the porous blocky solid obtained after carbonization, and dry it in a drying box to remove oil. The drying temperature is 300°C, and the drying time is 0.5 hours;

[0056] Step 6: Put the deoiled material into the burning boat, ignite the self-propagating reac...

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Abstract

The invention discloses a method for preparing titanium carbide micro powder. Titanium powder and sucrose with the mass ratio of 1 to 1.6:1 are mixed, milled with balls, dried, then carbonized in boiling oil, dried, removed with oil and ignited, and then an self-propagating reaction happens and titanium carbide is produced. The method mainly utilizes the sucrose to cover titanium powder particles, then carbonization is carried out to generate carbon which is used for covering the titanium powder particles; the contact area between carbon and titanium is fairly large and a carbon layer is remained between the titanium powder particles and particles, therefore, during the self-propagating reaction, the carbonized titanium powder is not easy to agglomerate and the technique process is simple and easy to be controlled.

Description

technical field [0001] The invention relates to the technical field of compounding organic and inorganic materials, in particular to a preparation method of titanium carbide micropowder. Background technique [0002] Titanium carbide has a high melting point, high hardness, and good chemical stability. It is mainly used to manufacture cermets, heat-resistant alloys and hard alloys. At the same time, they have excellent electrical conductivity and are the preferred materials for electrodes. Composite materials prepared with titanium carbide are widely used in mechanical processing, metallurgical mines, aerospace, fusion reactors and other fields. There are many ways to synthesize TiC, mainly including: [0003] 1. Carbothermal reduction method: TiC powder for industrial use is initially reduced to TiO with carbon black 2 to prepare; [0004] 2. Direct carbonization method: use Ti powder and carbon powder to react to form TiC powder. The above reaction takes 5 to 20 hours t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/30
Inventor 刘均波
Owner WEIFANG UNIVERSITY
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