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Ti3AlC2 powder and preparation method thereof

A technology of powder and titanium powder, applied in the field of Ti3AlC2 powder and its preparation, can solve the problems of low production efficiency, high synthesis temperature and long cycle, and achieve the effects of high production efficiency, high powder purity and short production cycle

Pending Publication Date: 2020-02-21
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the existing Ti 3 AlC 2 The preparation method of powder generally has problems such as high synthesis temperature, long cycle, high energy consumption and low production efficiency.

Method used

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  • Ti3AlC2 powder and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A Ti 3 AlC 2 Powder and its preparation method. The specific steps of the preparation method described in this embodiment are:

[0044] Step 1. According to the molar ratio of titanium powder: aluminum powder: graphite of 3:1:1, mix the titanium powder, the aluminum powder and the graphite to obtain a reaction material; then press sodium chloride and potassium chloride The molar ratio is 1:1, the sodium chloride and the potassium chloride are mixed to obtain a molten salt medium; then according to the mass ratio of the reaction material: the molten salt medium is 1:2.5, the The reaction material is mixed with the molten salt medium to obtain a mixture material.

[0045] Step 2: Put the mixed material and the agate ball in a planetary ball mill according to the mass ratio of the mixture material: agate ball to 1:2, and ball mill for 1 hour to obtain a ball abrasive.

[0046] Step 3. Put the ball abrasives into the alumina crucible, then put the alumina crucible into the therm...

Embodiment 2

[0051] A Ti 3 AlC 2 Powder and its preparation method. The specific steps of the preparation method described in this embodiment are:

[0052] Step 1. According to the molar ratio of titanium powder: aluminum powder: graphite of 3:1.1:2, the titanium powder, the aluminum powder and the graphite are mixed to obtain the reaction material; and then sodium chloride and potassium chloride The molar ratio is 1:1, the sodium chloride and the potassium chloride are mixed to obtain a molten salt medium; then according to the mass ratio of the reaction material: the molten salt medium is 1:4, the The reaction material is mixed with the molten salt medium to obtain a mixture material.

[0053] Step 2: Put the mixed material and the agate ball in a planetary ball mill according to the mass ratio of the mixed material: agate ball to 1:7, and ball mill for 1 hour to obtain a ball abrasive.

[0054] Step 3. Put the ball abrasives into the alumina crucible, then put the alumina crucible into the t...

Embodiment 3

[0059] A Ti 3 AlC 2 Powder and its preparation method. The specific steps of the preparation method described in this embodiment are:

[0060] Step 1. According to the molar ratio of titanium powder: aluminum powder: graphite of 3:1.2:1.8, the titanium powder, the aluminum powder and the graphite are mixed to obtain the reaction material; and then sodium chloride and potassium chloride The molar ratio is 1:1, the sodium chloride and the potassium chloride are mixed to obtain a molten salt medium; then according to the mass ratio of the reaction material: the molten salt medium is 1:1.8, the The reaction material is mixed with the molten salt medium to obtain a mixture material.

[0061] Step 2: Put the mixed material and the agate ball in a planetary ball mill according to the mass ratio of the mixed material: agate ball of 1:6, and ball mill for 1.5 hours to obtain a ball abrasive.

[0062] Step 3. Put the ball abrasives into the alumina crucible, then put the alumina crucible int...

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Abstract

The invention relates to Ti3AlC2 powder and a preparation method thereof. The preparation method comprises the steps: taking titanium powder, aluminum powder and graphite as reaction materials, takingsodium chloride and potassium chloride as molten salt media, performing ball milling on the reaction materials and the molten salt media, putting a ball-milled ball abrasive into an aluminum oxide crucible, putting the aluminum oxide crucible into a thermal insulation structure sagger, filling a gap between the thermal insulation structure sagger and the aluminum oxide crucible with silicon carbide powder, and putting the thermal insulation structure sagger into a microwave oven; sequentially heating to 440-460 DEG C, 590-610 DEG C and 900-1200 DEG C at three heating rates in an argon atmosphere, carrying out heat preservation for 5-60 min under a condition of the temperature of 900-1200 DEG C, and carrying out furnace cooling to room temperature; and finally, grinding, washing with water, carrying out suction filtration and drying to obtain the Ti3AlC2 powder. The method has the characteristics of high raw material utilization rate, short production period, low energy consumption andhigh production efficiency, and the prepared Ti3AlC2 powder is high in purity and suitable for mass production.

Description

Technical field [0001] The invention belongs to the technical field of ternary transition metal carbide materials. Specifically related to a Ti 3 AlC 2 Powder and its preparation method. Background technique [0002] Ti 3 AlC 2 It is a typical layered ternary transition metal carbide, belonging to the MAX phase family. Its unique combination of atoms gives it excellent characteristics, such as low density, high modulus, strong oxidation resistance and good thermal (electric) conductivity. Its derivative Ti 3 C 2 T x MXene is a new type of two-dimensional material, which can selectively etch Ti in an acidic aqueous solution containing fluoride 3 AlC 2 It can be used in many fields such as energy storage, electromagnetic shielding, reinforcing materials, water purification, biosensors, catalysts, etc., and has broad application prospects. [0003] Commonly used Ti 3 AlC 2 Powder synthesis methods include pressureless sintering method, molten salt method, plasma sintering method, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/90
CPCC01B32/90C01P2004/03C01P2002/72C01P2006/80C01P2004/61
Inventor 雷文管可可张海军张少伟王洪红
Owner WUHAN UNIV OF SCI & TECH
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