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Superfine titanium powder and preparation method thereof

A technology of titanium powder and titanium tetrachloride, applied in the field of powder metallurgy, can solve the problems of complex process steps of sodium thermal reduction sponge titanium method, difficult control of titanium powder particle size, and high powder hollow powder rate, and achieves easy control and smooth particles. , the effect of high activity

Active Publication Date: 2019-04-16
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of titanium powder is not easy to control in the process of preparing titanium powder by hydrogenation dehydrogenation method
The cost of preparing titanium powder by atomization method is relatively high, and the prepared titanium powder is mostly spherical powder, and the powder has a high hollow powder rate and a low fine powder rate
The process steps of the sodium thermal reduction sponge titanium method are relatively complicated and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add the titanium tetrachloride raw material and hydrogen into the plasma electric furnace at the same time, and the amount of hydrogen is 2.2m 3 / h, the addition of titanium tetrachloride is 4g / s, the temperature in the plasma electric furnace is 5000°C, and the current intensity is 200A. After 60 minutes of reaction, argon gas is passed into for rapid cooling. Symmetrical arrangement, so that the relative angle between the two nozzles is controlled at 30-45°C, and the flow rate of argon gas is 6m 3 / h, cooled to room temperature to obtain ultra-fine titanium powder, the particle size of the ultra-fine titanium powder is 500-1500 microns, and the purity is 99.9%.

Embodiment 2

[0021] Add the titanium tetrachloride raw material and hydrogen into the plasma electric furnace at the same time, and the amount of hydrogen is 3m 3 / h, the addition amount of titanium tetrachloride is 3g / s, the temperature in the plasma electric furnace is 5500°C, and the current intensity is 220A. Symmetrical arrangement, so that the relative angle between the two nozzles is controlled at 30-45°C, and the flow rate of argon gas is 7m 3 / h, cooled to room temperature to obtain ultrafine titanium powder, the particle size of the ultrafine titanium powder is 500-1000 microns, and the purity is 99.97%.

Embodiment 3

[0023] Add the titanium tetrachloride raw material and hydrogen into the plasma electric furnace at the same time, and the amount of hydrogen is 2m 3 / h, the addition amount of titanium tetrachloride is 5g / s, the temperature in the plasma electric furnace is 4000°C, and the current intensity is 300A. Symmetrical arrangement, so that the relative angle between the two nozzles is controlled at 30-45°C, and the flow rate of argon gas is 5m 3 / h, cooled to room temperature to obtain ultrafine titanium powder, the particle size of the ultrafine titanium powder is 1000-2000 microns, and the purity is 99.92%.

[0024] It can be known from Examples 1-3 that the ultrafine titanium powder prepared by the method of the present invention has a purity of 99.9-99.99% and a particle size of 10-2000 microns. By adopting the method of the invention, metal titanium powder with a suitable particle size can be prepared according to requirements. The method of the invention is easy to control, a...

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Abstract

The invention belongs to the technical field of powder metallurgy and particularly relates to superfine titanium powder and a preparation method thereof. The superfine titanium powder and the preparation method thereof aim at achieving the technical effect that the grain size of the titanium powder can be appropriate. The preparation method comprises the following steps that titanium tetrachlorideand plasma are in full contact for 30-120 minutes in a plasma electric furnace; and rapid cooling is conducted to reach the room temperature, so that the superfine titanium powder is obtained. The purity of the superfine titanium powder prepared through the method ranges from 99.9% to 99.99%, and the grain size ranges from 10 microns to 2000 microns. The method is easy to control; a target product can be obtained through a one-step reaction; and energy consumption is saved, the cost is lowered, and the quite good development prospect is achieved.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy, and in particular relates to ultrafine titanium powder and a preparation method thereof. Background technique [0002] Titanium is a silver-white transition metal with light weight, high strength and good corrosion resistance. Titanium has stable chemical properties, such as good high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance, high strength, low density, etc. Titanium is widely used and can be used to produce various coatings for surface decoration, Decorative coatings, sealing coatings, etc., titanium is also widely used in the manufacture of aerospace parts. [0003] At present, the main methods for industrial production of titanium powder are: hydrogenation dehydrogenation method, atomization method and sodium thermal reduction sponge titanium method. The particle size of titanium powder is not easy to control in the proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/22
CPCB22F1/0003B22F9/22B22F2999/00B22F2202/13
Inventor 闫蓓蕾邓斌孟伟巍
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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