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A method for synthesizing a spherical max phase powder material whose main phase is ti2alc

A powder material and main phase technology, which is applied in the field of synthesizing spherical MAX phase powder materials whose main phase is Ti2AlC, can solve the problem that the electrochemical and other activities of the powder are not high enough, the particle size and shape are difficult to accurately control, and it is easy to introduce other materials. Impurities and other problems, to achieve the effect of convenient large-scale production, simplified powder preparation process, and good fluidity

Active Publication Date: 2018-11-06
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of synthetic main phase is Ti 2 The method of spherical MAX phase powder material of AlC, in order to solve Ti 2 The particle size and shape of AlC powder are difficult to control accurately, and other impurities are easily introduced during the powder preparation process. The subsequent treatment process is complicated, the surface area of ​​the prepared powder is small, and the electrochemical and other activities of the powder are not high enough. The powder is used for preparation and processing. The problem of poor fluidity of other components

Method used

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  • A method for synthesizing a spherical max phase powder material whose main phase is ti2alc
  • A method for synthesizing a spherical max phase powder material whose main phase is ti2alc
  • A method for synthesizing a spherical max phase powder material whose main phase is ti2alc

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Embodiment 1

[0035] TiH 2 , Al, TiC powder raw materials are n(TiH 2 ):n(Al):n(TiC)=1:1.1:1 ratio ingredients. Ti H 2 The average particle size of powder is 800nm, the purity is 99.9wt%, the average particle size of Al powder is 1 micron, the purity is 99.9wt%, the average particle size of TiC is 800nm, the purity is 99.5wt%. Such as Figure 4 As shown in the particle size distribution of the raw material powder, the powder contains many components with different particle sizes and thus presents a bimodal distribution.

[0036] Add 1.5Kg of absolute ethanol to the evenly mixed powder, and put it into a 3L beaker. Place the beaker in a high-power ultrasonic cleaning machine for dispersion and stir with a stirrer at the same time, the stirring speed is 250r / min, and the time is 30min. The slurry is spray-dried with an organic solvent-based laboratory spray dryer with an inert gas closed cycle function, using a two-fluid nozzle with a nozzle diameter of 2mm, the air inlet temperature is ...

Embodiment 2

[0038] TiH 2 , Al, TiC powder raw materials are n(TiH 2 ):n(Al):n(TiC)=1:1.1:1 ratio ingredients. Ti H 2 The average particle size of powder is 800nm, the purity is 99.9wt%, the average particle size of Al powder is 1 micron, the purity is 99.9wt%, the average particle size of TiC is 800nm, the purity is 99.5wt%, the total raw material is 1Kg, and it is mixed with a mixer for 30 minutes. Add 1.5Kg of absolute ethanol to the uniformly mixed powder, and put it into a 5L stirring ball mill for ball milling for 30 minutes. Place the beaker in a high-power ultrasonic cleaning machine for dispersion and stir with a stirrer at the same time, the stirring speed is 250r / min, and the time is 30min. Dry the slurry with a centrifugal atomizing dryer with a closed-cycle function. A centrifugal atomizing nozzle is used. The diameter of the atomizing disc is 50mm. The atomizer speed is 20000r / min. Peristaltic pump speed 30r / min, heating power 9KW. The dried powder was placed in an alumi...

Embodiment 3

[0040] TiH 2 , Al, TiC powder raw materials are n(TiH 2 ):n(Al):n(TiC)=1:1.1:1 ratio ingredients. Ti H 2 The average particle size of powder is 800nm, the purity is 99.9wt%, the average particle size of Al powder is 1 micron, the purity is 99.9wt%, the average particle size of TiC is 800nm, the purity is 99.5wt%, the total raw material is 3Kg, and it is mixed with a mixer for 30min. Add 4.5Kg of absolute ethanol to the uniformly mixed powder, and put it into a 10L vibratory ball milling device with a vibration frequency of 50 Hz, an amplitude of 5 mm, and a ball milling time of 30 minutes. Pour out the ball-milled slurry and put it into a 10L beaker while stirring with a stirrer at a stirring speed of 250r / min for 30min. The slurry is dried with a large centrifugal atomization dryer with a closed cycle function, a centrifugal atomization nozzle is used, the diameter of the atomization disc is 120mm, and the rotation speed of the atomizer is 15000r / min. The air inlet temper...

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Abstract

The invention relates to the field of ceramic materials, in particular to a method for synthesizing a spherical MAX-phase powder material with the main phase being Ti2AlC. The method includes the steps that a powder material capable of being synthesized into an MAX phase in a non-pressure sintering mode is prepared into slurry, the slurry is dried into spherical powder through a spray-drying granulation method, the obtained raw material powder is subjected to non-pressure sintering under a vacuum condition, the sintered powder material is simply ground and sieved, and the MAX-phase powder material with a high degree of sphericity can be obtained. The spherical MAX-phase powder prepared through the method is good in sphericity, large in specific area, high in activity, good in dispersity and liquidity and suitable for serving as a novel mesoporous material to be used in the fields of electrode materials, hydrogen storage materials, supercapacitors, pollutant adsorption, catalyst carriers and the like, and pores are formed in the interior and the surface of the powder material.

Description

technical field [0001] The invention relates to the field of ceramic materials, in particular to a composite whose main phase is Ti 2 AlC spherical MAX phase powder material method. Background technique [0002] After entering the 21st century, the research and application of two-dimensional materials has always been a hot spot in material research. Most of these works revolve around materials such as graphene, transition metal sulfides, oxides, black phosphorus, and two-dimensional hexagonal boron nitride. Research in this area has greatly expanded the performance and application of two-dimensional materials. But in recent years, a new type of transition metal carbide nanosheet MXenes has attracted extensive attention from the research community. Studies have shown that this material has excellent electrochemical performance, good water solubility, very large surface area and light weight, so it is expected to be applied in many fields. For example, replacing traditional...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/56C04B35/65
CPCC04B35/56C04B35/65C04B2235/3843C04B2235/402C04B2235/44C04B2235/5445C04B2235/5472
Inventor 柏春光谢曦贾清郑卓崔玉友杨锐
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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