Preparation method of titanium foam

A technology of titanium foam and titanium powder, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of low catalytic activity, unsuitable electrode matrix, and small porosity of titanium foam. Achieve the effect of simple preparation method, low price and stable decomposition

Active Publication Date: 2020-06-05
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention proposes a method for preparing foamed titanium, which solves the problem that the foamed titanium prepared in the prior art has too small porosity, low catalytic activity, and is not suitable for use as an electrode substrate

Method used

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  • Preparation method of titanium foam
  • Preparation method of titanium foam
  • Preparation method of titanium foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of titanium foam, comprising the following steps:

[0033] S1. Spread a layer of dense plastic film on the bottom of the metal container, and then evenly place coke particles with a particle size of 6mm in the metal container, and then evenly sprinkle in titanium powder with a particle size of 400 mesh, the mixture of coke and titanium powder The volume ratio is 1:1, cover with a press tablet, shake properly to mix well, and compact to obtain a mixed sample;

[0034] S2. Use the cut tube plug of the high temperature tube furnace as the carrier, take the mixed sample out of the plastic film, put it on the carrier, put it into the high temperature furnace together, seal the high temperature furnace, repeatedly evacuate the argon to the furnace The internal impurity gas is exhausted;

[0035] S3. Place the sample in a high-temperature tube furnace, first raise the temperature to 600°C at a rate of 10°C / min, hold for 10 minutes, then raise the temperat...

Embodiment 2

[0037] A preparation method of titanium foam, comprising the following steps:

[0038]S1. Spread a layer of dense plastic film on the bottom of the metal container, and then evenly place coke particles with a particle size of 6mm in the metal container, and then evenly sprinkle in titanium powder with a particle size of 400 mesh, the mixture of coke and titanium powder The volume ratio is 1:1, cover the pressing tablet, and shake it properly to fully mix and compact to obtain a mixed sample;

[0039] S2. Use the cut tube plug of the high temperature tube furnace as the carrier, take the mixed sample out of the plastic film, put it on the carrier, put it into the high temperature furnace together, seal the high temperature furnace, repeatedly evacuate the argon to the furnace The internal impurity gas is exhausted;

[0040] S3. Place the sample in a high-temperature tube furnace, first raise the temperature to 600°C at a rate of 10°C / min, hold for 10 minutes, then raise the te...

Embodiment 3

[0042] A preparation method of titanium foam, comprising the following steps:

[0043] S1. Spread a layer of dense plastic film on the bottom of the metal container, and then evenly place coke particles with a particle size of 6mm in the metal container, and then evenly sprinkle in titanium powder with a particle size of 400 mesh, the mixture of coke and titanium powder The volume ratio is 1:1, cover the pressing tablet, and shake it properly to fully mix and compact to obtain a mixed sample;

[0044] S2. Use the cut tube plug of the high temperature tube furnace as the carrier, take the mixed sample out of the plastic film, put it on the carrier, put it into the high temperature furnace together, seal the high temperature furnace, repeatedly evacuate the argon to the furnace The internal impurity gas is exhausted;

[0045] S3. Place the sample in a high-temperature tube furnace, first raise the temperature to 600°C at a rate of 10°C / min, hold for 10 minutes, then raise the t...

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Abstract

The invention belongs to the technical field of electrode base materials, and provides a preparation method of titanium foam. The method comprises the steps that coke is adopted as a pore forming agent and mixed with titanium powder to be sintered, the pore forming agent is removed, and the titanium foam is obtained, wherein the volume ratio of the coke to the titanium powder is (0.5-2):1, the grain size of the coke is 1-6 mm, the sintering temperature is 1,400-1,600 DEG C, and the grain size of the titanium powder is 400 meshes. The preparation method specifically comprises the following steps that S1, the coke and the titanium powder are compacted after being mixed to obtain a mixed sample; S2, the mixed sample is sealed, vacuumizing is performed repeatedly, argon is introduced till foreign gas is exhausted; S3, the temperature is increased to 1,400-1,600 DEG C, and sintering is performed; and cooling is performed to the room temperature to obtain a titanium foam midbody; S4, the midbody is placed into a coke gasification small fixed bed reaction device, the temperature is increased to 1,100 DEG C, CO2 is introduced with the flow being 400-600 ml/min, the reaction is performed for a period of time, heating is stopped, cooling is performed to reach the room temperature. According to the technical scheme, the prepared titanium foam is adopted as an anode, electro-catalysis treatment is performed on the coked wastewater, the number of active loci is large, and the degradation efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of electrode matrix materials, and relates to a preparation method of foamed titanium. Background technique [0002] The foam titanium material is composed of holes and a rigid skeleton inside the structure. It is characterized by small mass, large pore size, high specific strength, excellent sound absorption and heat dissipation, and electromagnetic shielding functions. It is used as adsorption materials, structural materials, and metal electrodes in the industrial field. It is used as a human skeleton in the medical field. [0003] The most widely used method to prepare foamed titanium is the powder sintering method, especially for functional materials. The process is mainly the screening, pressing and sintering of metal powder, which can be roughly divided into direct sintering method and powder mixed sintering method. The principle of the direct sintering powder method is relatively simple. The loose ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11B22F3/10C22C1/08C02F1/461
CPCB22F3/1121B22F3/1017C02F1/46109C02F2101/16C02F2001/46133
Inventor 郭爱红李良玉俞强
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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