Preparation method of micro low-oxygen titanium hydride powder

A technology of titanium hydride powder and titanium hydride, which is applied in the field of preparation of titanium hydride powder and can solve problems such as the difficulty in preparing high-quality titanium powder

Inactive Publication Date: 2015-12-30
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to prepare high-quality and small-sized titanium powder by traditional hydrodehydrogenation method, and to obtain ultra-fine, low-oxygen titanium powder requires process improvement or further treatment

Method used

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  • Preparation method of micro low-oxygen titanium hydride powder
  • Preparation method of micro low-oxygen titanium hydride powder
  • Preparation method of micro low-oxygen titanium hydride powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Under vacuum conditions, hydrogenate the massive titanium sponge at 450°C and 0.04Mpa high-purity hydrogen pressure for 0.5h to obtain massive brittle titanium hydride.

[0020] (2) The titanium hydride powder obtained above is ball-milled at a speed of 300r / min, the ball-to-material ratio is 3:1, and the ball-milling time is 1h. The D 50 It is 7.74 μm, and the oxygen content is 650 ppm.

[0021] (3) SEM test is carried out to the obtained titanium hydride powder, the results are shown in figure 1 .

Embodiment 2

[0023] (1) Hydrogenate the blocky titanium sponge at 450°C and 0.04Mpa high-purity hydrogen pressure for 0.5h to obtain blocky brittle titanium hydride

[0024] (2) The titanium hydride powder obtained above is ball-milled at a speed of 300r / min, the ball-to-material ratio is 5:1, and the ball-milling time is 1h. The D 50 is 5.93 μm, and the oxygen content is 750 ppm.

[0025] (3) SEM test is carried out to the obtained titanium hydride powder, the results are shown in figure 2 .

Embodiment 3

[0027] (1) Hydrogenate the blocky titanium sponge at 500°C and 0.04Mpa high-purity hydrogen pressure for 0.5h to obtain blocky brittle titanium hydride

[0028] (2) The titanium hydride powder obtained above is ball-milled at a speed of 300r / min, the ball-to-material ratio is 7:1, and the ball-milling time is 1h. The D 50 is 5.84 μm, and the oxygen content is 700 ppm.

[0029] (3) SEM test is carried out to the obtained titanium hydride powder, the results are shown in image 3 .

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Abstract

The invention relates to a preparation method of micro low-oxygen titanium hydride powder, and belongs to the technical field of powder preparation in a powder metallurgy technology. Hydrogenation treatment and a ball grinding technology are combined; firstly, high-purity hydrogen is fed under a vacuum condition, so that blocky sponge titanium and the hydrogen generate hydrogenation reaction to prepare titanium hydride; then the titanium hydride is crushed by the mechanical ball grinding technology, so that the titanium hydride powder is obtained. The oxygen content of the prepared micro low-oxygen titanium hydride powder is 500 to 900ppm, and the average particle size D50 is 1 to 10 microns.

Description

technical field [0001] The invention relates to a preparation technology of titanium hydride powder, belongs to the technical field of powder making in powder metallurgy technology, and in particular provides a preparation method of fine, low-oxygen titanium hydride powder. technical background [0002] Titanium and titanium alloys have the advantages of low density, high specific strength, oxidation resistance, fatigue resistance, and corrosion resistance, and are widely used in aerospace and other technical fields. In recent years, it has developed rapidly to the application fields such as automobile, shipbuilding, chemical industry, medicine and entertainment equipment. At present, the difficulty in processing titanium alloys and high cost are the main reasons restricting the large-scale application of titanium alloys, and the titanium alloy powder metallurgy technology with the advantage of near-net shape can not only manufacture high-quality near-net-shape parts with co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04
Inventor 陈子勇杨贵芳柴丽华相志磊侯潇乔勇崔永双
Owner BEIJING UNIV OF TECH
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