High-strength Mo-Ti-Zr-CNT molybdenum alloy composite material and preparation method thereof

A mo-ti-zr-cnt, composite material technology, applied in the field of high-strength Mo-Ti-Zr-CNT molybdenum alloy composite material and its preparation, can solve the problems of unsuitability for large-scale production, high price, etc. The effect of increasing hardness, enhancing grain boundary bonding force and increasing strength

Inactive Publication Date: 2019-05-17
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But not suitable for mass production, expensive

Method used

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  • High-strength Mo-Ti-Zr-CNT molybdenum alloy composite material and preparation method thereof
  • High-strength Mo-Ti-Zr-CNT molybdenum alloy composite material and preparation method thereof
  • High-strength Mo-Ti-Zr-CNT molybdenum alloy composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, the Mo-Ti-Zr-CNT molybdenum alloy composite material is doped with carbon nanotubes as a carbon source, wherein each component is constituted by mass ratio as follows: Ti 0.5%, Zr 0.1 %, CNT 0.03%, the balance is Mo.

[0026] The original powder particle size is: TiH 2 Powder particle size is 30-40 microns, ZrH 2 The particle size of the powder is 30-50 microns, the particle size of the multi-wall CNT powder is 30-50 nanometers, and the particle size of the molybdenum powder is 3-5 microns.

[0027] The preparation method of high-strength Mo-Ti-Zr-CNT molybdenum alloy composite material in the present embodiment comprises the following steps:

[0028] 1. Powder mixing: According to the doping ratio, weigh 29.811g molybdenum powder, 0.156g TiH 2 Powder, 0.031g ZrH 2 powder and 0.009g of carbon nanotube powder were placed in a mixing tank, and placed in a three-dimensional powder mixer for powder mixing for 2 hours.

[0029] 2. Ball milling: Put t...

Embodiment 2

[0033] In this embodiment, the Mo-Ti-Zr-CNT molybdenum alloy composite material is doped with carbon nanotubes as a carbon source, wherein each component is constituted by mass ratio as follows: Ti 0.5%, Zr 0.1 %, CNT 0.03%, the balance is Mo.

[0034] The original powder particle size is: TiH 2 Powder particle size is 30-40 microns, ZrH 2 The particle size of the powder is 30-50 microns, the particle size of the multi-wall CNT powder is 30-50 nanometers, and the particle size of the molybdenum powder is 3-5 microns.

[0035] The preparation method of high-strength Mo-Ti-Zr-CNT molybdenum alloy composite material in the present embodiment comprises the following steps:

[0036] 1. Powder mixing: According to the doping ratio, weigh 49.685g molybdenum powder, 0.26g TiH 2 Powder, 0.051g ZrH 2 powder and 0.015g of carbon nanotube powder were placed in a mixing tank, and placed in a three-dimensional powder mixer for powder mixing for 2 hours.

[0037] 2. Ball milling: put th...

Embodiment 3

[0041] In this embodiment, the Mo-Ti-Zr-CNT molybdenum alloy composite material is doped with carbon nanotubes as a carbon source, wherein each component is constituted by mass ratio as follows: Ti 0.5%, Zr 0.1 %, CNT 0.03%, the balance is Mo.

[0042] The original powder particle size is: TiH 2 Powder particle size is 30-40 microns, ZrH 2 The particle size of the powder is 30-50 microns, the particle size of the multi-wall CNT powder is 30-50 nanometers, and the particle size of the molybdenum powder is 3-5 microns.

[0043] The preparation method of high-strength Mo-Ti-Zr-CNT molybdenum alloy composite material in the present embodiment comprises the following steps:

[0044] 1. Powder mixing: According to the doping ratio, weigh 49.685g molybdenum powder, 0.26g TiH 2 Powder, 0.051g ZrH 2 powder and 0.015g of carbon nanotube powder were placed in a mixing tank, and placed in a three-dimensional powder mixer for powder mixing for 2 hours.

[0045] 2. Ball milling: put th...

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Abstract

The invention discloses a high-strength Mo-Ti-Zr-CNT molybdenum alloy composite material and a preparation method thereof. Traditional graphite is replaced with a carbon nanotube, and the carbon nanotube serves as a carbon source of a TZM molybdenum alloy, a molybdenum alloy obtained by doping TiH2, ZrH2 and CNT in molybdenum, and the molybdenum alloy is prepared from the components in percentageby mass: 0.5% of Ti, 0.1% of Zr, 0.03% of CNT, and the balance of Mo. According to the high-strength Mo-Ti-Zr-CNT molybdenum alloy composite material and the preparation method thereof, technologies such as ball milling and spark plasma sintering are optimized, and the hardness and the yield strength of the prepared Mo-Ti-Zr-CNT molybdenum alloy composite material are effectively improved.

Description

technical field [0001] The invention relates to a metal composite material and a preparation method thereof, in particular to a high-strength Mo-Ti-Zr-CNT molybdenum alloy composite material and a preparation method thereof. Background technique [0002] Pure molybdenum is easy to oxidize at high temperature, has a low recrystallization temperature, and is not easy to process at room temperature. By adding other elements to molybdenum, many systems of molybdenum alloys have been developed. Adding titanium, zirconium, carbon and other elements can effectively improve the performance of molybdenum alloys, among which TZM molybdenum alloys have been widely used in aerospace, nuclear industry, medical treatment, machinery and other industries. [0003] The main components of TZM molybdenum alloy are as follows: carbon (C): 0.01%-0.04%; titanium (Ti): 0.40%-0.55%; zirconium (Zr): 0.06%-0.12%; the balance is molybdenum (Mo). At present, most TZM alloys are produced by powder meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C1/04
Inventor 吴玉程卫勇罗来马昝祥朱晓勇
Owner HEFEI UNIV OF TECH
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