Tungsten nanoparticle-based enhanced light metal-based composite material and preparation method thereof

A nanoparticle and composite material technology, applied in the field of materials, can solve the problems of poor bonding between the metal matrix and the particle interface, uneven particle dispersion, etc., and achieve the effect of improving high temperature mechanical properties, overcoming uneven distribution, and improving strength and toughness.

Inactive Publication Date: 2020-04-21
北京理工大学重庆创新中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem solved by the present invention is to provide a method for preparing a reinforced lightweight metal matrix composite material based on tungsten nanoparticles, which solves the problem of poor bonding between the metal matrix and the particle interface of the composite material and uneven particle dispersion in the prior art. question

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  • Tungsten nanoparticle-based enhanced light metal-based composite material and preparation method thereof
  • Tungsten nanoparticle-based enhanced light metal-based composite material and preparation method thereof

Examples

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Embodiment 1

[0036] This embodiment discloses the preparation method of tungsten nanopowder, specifically:

[0037] Step 1. Use paratungstinate as raw material, dissolve in deionized water under the condition of heating and stirring, add citric acid as complexing agent, and dissolve in deionized water together according to the molar ratio of metal ion and complexing agent citric acid 2:1 Form a sol with ionized water, continue to heat and stir to form a gel, then dry in a drying oven at 120°C for 4 hours, and then calcinate at 550°C for 5 hours in an air environment to obtain tungsten oxide powder;

[0038] Step 2. Place the tungsten oxide powder prepared in step 1 in a hydrogen atmosphere and keep it at 700° C. for 1 hour for reduction to obtain tungsten nanopowder.

Embodiment 2

[0040] as attached figure 1 As shown, this embodiment discloses the preparation method based on tungsten nanoparticles reinforced titanium-based composite material of the present invention, specifically:

[0041] The tungsten nanopowder and the pure titanium powder with a particle size of 50 μm prepared according to the method in Example 1 were placed in a 1L ball mill jar at a mass ratio of 1:24, wherein the amounts of tungsten nanopowder and titanium powder were respectively 0.25 g and 6g; then add 300ml of alcohol for ball milling at a speed of 300r / min. After the ball milling time is 10 hours, pour the mixture of ball milled powder and alcohol into a suction filtration device for suction filtration, and place the powder after suction filtration Dry in a vacuum oven at a temperature of 100° C. for 10 hours to finally obtain ball-milled tungsten-dispersed titanium powder.

[0042] The powder of tungsten-dispersed titanium is placed in a graphite abrasive tool and pressed in...

Embodiment 3

[0045] as attached figure 2As shown, this embodiment discloses the preparation method based on tungsten nanoparticles reinforced titanium-based composite material of the present invention, specifically:

[0046] Put the tungsten nanopowder and the pure aluminum powder with a particle size of about 80 μm prepared according to the method in Example 1 into a 1L ball milling pot at a mass ratio of 1:10, wherein the tungsten nanopowder is 0.25g, and the pure aluminum powder is 2.5g g; then add 300ml of alcohol for ball milling at a speed of 200r / min. After 20 hours of ball milling, pour the mixture of ball milled powder and alcohol into a suction filtration device for suction filtration, and vacuum dry the powder after suction filtration. The oven was dried at 100°C for 10 hours to finally obtain ball-milled tungsten-dispersed aluminum powder.

[0047] The powder of tungsten-dispersed aluminum is placed in a stainless steel abrasive tool and pressed into shape, and then sintered ...

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Abstract

The invention discloses a tungsten nanoparticle-based enhanced light metal-based composite material and a preparation method thereof. The tungsten nanoparticle-based enhanced light metal-based composite material and the preparation method solve the problems of poor interface bonding between a metal matrix of a composite material and particles and non-uniform particle dispersion in the prior art. According to the preparation method, tungsten nano powder and light metal powder are subjected to high-energy ball milling to form a solid solution, then the solid solution is sintered after compression molding, nano tungsten particles are separated out and evenly distributed in the light metal matrix, and the tungsten nanoparticle-based enhanced light metal-based composite material is obtained. Bymeans of the tungsten nanoparticle-based enhanced light metal-based composite material and the preparation method, design is scientific, the method is simple, and operation is facilitated; and a high-energy ball milling method and powder sintering are creatively combined, and solid solution-precipitation of tungsten nanoparticles is achieved, so that the tungsten nanoparticles in the size being 50 nm or below are introduced into a light metal-based material, the strength, toughness and high-temperature mechanical property of the light metal-based composite material are greatly improved, and requirements of aerospace and other fields for low density and high performance of structural materials are better met.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a reinforced light metal matrix composite material based on tungsten nanoparticles and a preparation method thereof. Background technique [0002] The field of aerospace is one of the fastest-growing, most active, and one of the scientific and technological fields that have an important impact on human life in the process of understanding and transforming nature in the 21st century. As an important structural material, lightweight metal alloys (such as titanium alloys, aluminum alloys, etc.) have been widely used in the aerospace field due to their light weight, high specific strength, good mechanical properties, and corrosion resistance. Aerospace lightweight metal alloy structural materials are mainly used to manufacture various structural components of aircraft, such as the body of the aircraft, the load-bearing cylinder of the spacecraft, the engine casing, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C14/00C22C21/00C22C23/00B22F9/04
CPCB22F9/04B22F2009/043C22C1/0408C22C1/0458C22C14/00C22C21/00C22C23/00
Inventor 范群波王乐余洪马壮王扬卫
Owner 北京理工大学重庆创新中心
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