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Production method of nano TiC powdered material

A production method and technology of powder materials, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of uneven particle size, small output, long synthesis time, etc., and achieve the effect of stable particle size and enhanced activity

Active Publication Date: 2012-07-04
ZHEJIANG PENGCHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the Chinese invention application with the application number CN00136869.9 discloses a method for preparing micron to micronano carbide ceramic particles by using petroleum coke, and the Chinese invention application with the application number CN02159005.2 discloses a method using petroleum coke salt bath A method for synthesizing and preparing TiC micro-nano ceramic powder, the Chinese invention application with application number CN02159006.0 discloses a method and application for preparing TiC ceramic powder by chemical reaction method of petroleum coke and TiO2 The Chinese invention application No. CN02159007.9 discloses a method for preparing TiC ceramic powder by using petroleum coke chemical reaction method. The disadvantages of these synthesis methods are: low process efficiency, small output, uneven particles, and long synthesis time and high production cost

Method used

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  • Production method of nano TiC powdered material
  • Production method of nano TiC powdered material
  • Production method of nano TiC powdered material

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Experimental program
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Effect test

Embodiment 1

[0046] Ti powder and activated carbon powder are used as raw materials, and the ratio of Ti powder and activated carbon powder is 1:1 for batching. Ф6mm stainless steel balls and 100mL stainless steel ball mill jars are used as ball milling media, and the ball-to-material ratio is 50:1. Ball milling is carried out on a planetary ball mill, and H is passed into the tank during ball milling. 2 Carry out high-energy mechanical synthesis, the ball milling speed is 720r / min, and the ball milling time is 100h. The TiC powder prepared in this embodiment is measured by electron microscopy and BET, and the powder with a grain size of 30-50nm accounts for about 96% of the whole, and the powder with a grain size of 80-200nm accounts for about 4% of the whole. There is basically no powder above 200nm, and the density is 4.93 g / cm 3 , The melting point is 3160°C, the boiling point is 4300°C, the comprehensive performance of the powder is excellent.

Embodiment 2

[0048] Ti powder and activated carbon powder are used as raw materials, and the ratio of Ti powder and activated carbon powder is 0.9:1.1 for batching. Ф6mm stainless steel balls and 100mL stainless steel ball mill jars are used as ball milling media, and the ball-to-material ratio is 60:1. Ball milling is carried out on a planetary ball mill, and H is passed into the tank during ball milling. 2 Carry out high-energy mechanical synthesis, the ball milling speed is 750r / min, and the ball milling time is 50h. The TiC powder that present embodiment makes is measured by electron microscope, BET, and the powder that grain size is 30-50nm accounts for about 97% of the whole, and the powder that grain size is 80-200nm accounts for about 3% of the whole, and grain size is There is basically no powder above 200nm, and the density is 4.85 g / cm 3 , The melting point is 3200°C, the boiling point is 4350°C, the comprehensive performance of the powder is excellent.

Embodiment 3

[0050] Ti powder and activated carbon powder are used as raw materials, and the ratio of Ti powder and activated carbon powder is 1.1:0.9 for batching. Ф6mm stainless steel balls and 100mL stainless steel ball milling tanks are used as ball milling media, and the ball-to-material ratio is 40:1. It is carried out on a planetary ball mill, and H is passed into the tank during ball milling 2 Carry out high-energy mechanical synthesis, the ball milling speed is 700r / min, and the ball milling time is 80h. The TiC powder that present embodiment makes is measured by electron microscope, BET, and the powder that grain size is 30-50nm accounts for about 95% of the whole, and the powder that grain size is 80-200nm accounts for about 5% of the whole, and grain size is There is basically no powder above 200nm, and the density is 5.79 g / cm 3 , The melting point is 3110°C, the boiling point is 4260°C, and the comprehensive performance of the powder is excellent.

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Abstract

The invention belongs to the field of nano material processing, and in particular relates to a production method of a nano TiC powdered material. The production method comprises the following steps: proportioning Ti powder and activated carbon powder as raw materials according to the atomic ratio of (0.9-1.1):(1.1-0.9), and introducing H2 for ball milling with stainless steel balls as ball milling media, wherein the ratio of grinding media to material is (40-60):1 and the ball milling time is 50-100 hours, thus obtaining the nano TiC powdered material. The grain fineness number of the prepared nano TiC powdered material is 30-200nm, wherein the content of powder of which the grain fineness number is 30-50nm is above 95%, the overall performance of the material is good and the production cost is low.

Description

technical field [0001] The invention belongs to the field of nano-material processing, and in particular relates to a production method of a nano-scale TiC powder material with high red hardness and wear resistance. Background technique [0002] In the field of iron and steel industry, it is very necessary to have a material with high red hardness to meet the requirements of processing and production at high temperatures above 950 °C. However, such materials are relatively scarce in the market at present. Titanium carbide is widely used in the manufacture of cermets, heat-resistant alloys and hard alloys due to its high melting point, high hardness, and good chemical stability. [0003] At present, there are many methods for synthesizing TiC, mainly including: 1. Carbothermal reduction method: TiC powder for industrial use is initially reduced to TiO with carbon black 2 2. Direct carbonization method: use Ti powder and carbon powder to react to form TiC powder, the above r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/30B82B3/00
Inventor 王勇伟潘炎芳
Owner ZHEJIANG PENGCHENG TECH