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A kind of preparation method of compact ti2alc material

A dense and mixed material technology is applied in the field of preparation of dense Ti2AlC materials, which can solve the problems of easy occurrence of impurity phase in products, difficult industrialization promotion, complicated process, etc., and achieve the effects of reducing oxygen content, simple process and high preparation cost.

Active Publication Date: 2020-10-30
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a compact Ti2AlC in order to solve the problems of expensive equipment used in the current Ti2AlC material preparation process, high cost, complicated process, difficulty in industrialization, and easy occurrence of impurity phases in the product, resulting in poor performance and thus restricting the application of the material. Material preparation method

Method used

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  • A kind of preparation method of compact ti2alc material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: A preparation method of a dense Ti2AlC material, using Ti powder, Al powder and carbon nanotubes as raw materials, and adopting a near-isothermal sheath forging method to prepare a dense Ti2AlC material at one time.

[0019] The atomic ratio of the Ti powder, Al powder and carbon nanotubes is 2:1:1; the Ti powder has a particle size of 100 μm, the Al powder has a particle size of 20 μm, and the carbon nanotube has a particle size of 100 μm.

[0020] The specific preparation method is:

[0021] (1) Mixing: mix Ti powder, Al powder and carbon nanotubes in a V-shaped mixer in proportion, each time the mass is 500g, the mixing time is 2h, and the speed is 100r / min;

[0022] (2) Preparation of the prefabricated block body: put the uniformly mixed powder into the mold, and then press it on the press, the pressure is controlled at 100MPa, the pressure is kept for 10 minutes, and then the pressure is automatically reduced to prepare the prefabricated block body;

[...

Embodiment 2

[0026] Example 2: A preparation method of a dense Ti2AlC material, using Ti powder, Al powder and carbon nanotubes as raw materials, and adopting a near-isothermal sheath forging method to prepare a dense Ti2AlC material at one time.

[0027] The atomic ratio of the Ti powder, Al powder and carbon nanotubes is: 3:1.5:1. The particle size of the Ti powder is 150 μm, the particle size of the Al powder is 35 μm, and the particle size of the carbon nanotube is 150 μm.

[0028] The specific preparation method is:

[0029] (1) Mixing: mix Ti powder, Al powder and carbon nanotubes in a V-type mixer in proportion, each time the mass is 500g, the mixing time is 4h, and the speed is 300r / min;

[0030] (2) Preparation of the prefabricated block body: put the uniformly mixed powder into the mold, and then press it on the press, the pressure is controlled at 150MPa, the pressure is maintained for 15 minutes, and then the pressure is automatically reduced to prepare the prefabricated block...

Embodiment 3

[0034] Example 3: A preparation method of a dense Ti2AlC material, using Ti powder, Al powder and carbon nanotubes as raw materials, and adopting a near-isothermal sheath forging method to prepare a dense Ti2AlC material at one time.

[0035] The atomic ratio of the Ti powder, Al powder and carbon nanotubes is: 4:2:1. The particle size of the Ti powder is 200 μm, the particle size of the Al powder is 50 μm, and the particle size of the carbon nanotube is 200 μm.

[0036] The specific preparation method is:

[0037] (1) Mixing: mix Ti powder, Al powder and carbon nanotubes in a V-type mixer in proportion, each time the mass is 500g, the mixing time is 6h, and the speed is 400r / min;

[0038] (2) Preparation of the prefabricated block body: put the uniformly mixed powder into the mold, and then press it on the press, the pressure is controlled at 200MPa, the pressure is kept for 20 minutes, and then the pressure is automatically reduced to prepare the prefabricated block body; ...

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Abstract

The invention belongs to the technical field of high polymer materials, aiming to solve the problems that conventional equipment for preparing Ti2AlC material is expensive and has the disadvantages ofhigh cost, complex process and difficulty in industrial promotion, and products obtained by the equipment always contain impurity phases which cause poor performance to limit application of the material. According to the preparation method, Ti powder, Al power and carbon nano tubes are taken as the raw materials to prepare the compact TiAlC material at one step by a near-isothermal canned forgingmethod; the powder mixing process is simplified. Since the operation is carried on a common hydraulic press directly, industrial production is facilitated, processing is simplified and cost is lowered. Further, by the way of high-temperature large-deformation, the Ti2AlC material prepared by the method has the advantages of high compactness and high fineness of grains.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of dense Ti2AlC material. Background technique [0002] The new ternary layered ceramic material Ti2AlC has become a research hotspot of many materials scholars at home and abroad in recent years because of its excellent properties. It has both metal properties, good thermal and electrical conductivity, low Vikers hardness, can be machined like metal, and has ceramic properties, high melting point, high thermal stability and good oxidation resistance. At the same time, it also has peculiar properties such as self-lubrication and thermal shock resistance. As an intermetallic compound material, it has the properties of both metal materials and ceramic materials. It has machinability and excellent high-temperature oxidation resistance. These excellent properties make It has broad application prospects, especially in the fields of high-temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/56C04B35/65
CPCC04B35/5618C04B35/65C04B2235/5288C04B2235/5427C04B2235/5436C04B2235/77C04B2235/786C04B2235/96
Inventor 张树志侯赵平张长江林鹏韩建超徐萌宋志文
Owner TAIYUAN UNIV OF TECH
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