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Preparation method of titanium-graphene composite material with matched reinforced-plasticity

A composite material and graphene technology, applied in chemical instruments and methods, carbon compounds, metal processing equipment, etc., can solve problems such as sacrificial plasticity

Inactive Publication Date: 2021-07-06
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These results can improve the strength of composite materials to a large extent, but seriously sacrifice plasticity, especially when the content of graphene is high, it even presents typical brittle fracture characteristics.

Method used

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  • Preparation method of titanium-graphene composite material with matched reinforced-plasticity
  • Preparation method of titanium-graphene composite material with matched reinforced-plasticity
  • Preparation method of titanium-graphene composite material with matched reinforced-plasticity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Preparation of eutectoid Cu-modified graphene nanopowders (Cu@rGO)

[0016] 1) Disperse 0.5 g of graphene oxide in a mixed solvent of 300 mL of deionized water and 200 mL of alcohol, and disperse with ultrasonic stirring for 3 hours to form a uniform graphene oxide dispersion;

[0017] 2) Disperse 10g of copper chloride salt in 100mL of deionized water, stir and disperse until the solution has no suspended matter, forming a metal Cu ion salt solution;

[0018] 3) Add the graphene oxide dispersion liquid obtained in step 1) dropwise to the metal ion salt solution obtained in step 2), stir ultrasonically, stir for 2h, and add 1mL glacial acetic acid dropwise to improve the dispersibility; after stirring, add Add 0.2mol / L sodium hydroxide solution to adjust the pH to above 10, then add 30mL ascorbic acid with a concentration of 0.56mol / L and stir until the solution is uniform;

[0019] 4) Put the mixed solution obtained in step 3) into a 90° C. water bath for heating ...

Embodiment 2

[0029] (1) Preparation of eutectoid metal element Ag-modified graphene nanopowder (Ag@rGO)

[0030] 1) Disperse 1 g of graphene oxide in a mixed solvent of 300 mL of deionized water and 200 mL of alcohol, and disperse with ultrasonic stirring for 3.5 hours to form a uniform graphene oxide dispersion;

[0031] 2) Disperse 10 g of silver nitrate salt in 100 mL of deionized water, stir and disperse until the solution has no suspended matter, and form a metal Ag ion salt solution;

[0032] 3) The graphene oxide dispersion obtained in step 1) is added dropwise to the metal ion salt solution obtained in step 2), stirred ultrasonically for 2 h, while adding 3 mL of glacial acetic acid dropwise to improve dispersibility; after stirring, add Add 0.2mol / L sodium hydroxide solution to adjust the pH to above 10, then add 30mL ascorbic acid with a concentration of 0.56mol / L and stir until the solution is uniform;

[0033]4) Put the mixed solution obtained in step 3) into a 90° C. water ba...

Embodiment 3

[0043] (1) Preparation of eutectoid metal element Fe-modified graphene nanopowder (Fe@rGO)

[0044] 1) Disperse 0.1 g of graphene oxide in a mixed solvent of 300 mL of deionized water and 200 mL of alcohol, and disperse with ultrasonic stirring for 5 hours to form a uniform graphene oxide dispersion;

[0045] 2) Disperse 30 g of ferrous chloride salt in 100 mL of deionized water, stir and disperse until the solution has no suspended matter, and form a metal Fe ion salt solution;

[0046] 3) The graphene oxide dispersion obtained in step 1) is added dropwise to the metal ion salt solution obtained in step 2), ultrasonically stirred, stirred for 2h, and 5mL of glacial acetic acid is added dropwise at the same time to improve dispersibility; after stirring, add to the mixed solution Add 0.2mol / L sodium hydroxide solution to adjust the pH to above 10, then add 30mL ascorbic acid with a concentration of 0.56mol / L and stir until the solution is uniform;

[0047] 4) Put the mixed so...

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Abstract

The invention belongs to the technical field of preparation of advanced metal-based composite materials, and particularly relates to a preparation method of a titanium-graphene composite material with matched reinforced-plasticity. The preparation method comprises the following steps that firstly, proper metal nanoparticles or nanolayers on the surface of graphene are selected for modification to prepare metal modified reduced graphene oxide nanopowder; the metal modified graphene is ultrasonically dispersed in a mixed solution of alcohol and deionized water, a proper amount of titanium alloy powder is slowly added into a dispersion solution, and uniformly stirring and dispersing are carried out in a water bath at 80 DEG C to obtain composite powder; and the composite powder is sintered and subjected to subsequent hot working deformation densification, and a titanium-graphene composite plate or bar with matched high reinforced-plasticity is obtained. According to the method, eutectoid elements in titanium alloy are adopted for modifying graphene, and metal nanolayer particles are formed. The load transfer strengthening effect of the graphene is enhanced, and the plasticity of the graphene strengthened titanium-based composite material is improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of advanced metal matrix composite materials, and in particular relates to a method for preparing a strongly plastically matched titanium-graphene composite material by regulating the interface morphology. Background technique [0002] Titanium is an important metal that was industrialized in the early 1950s. It has excellent properties and abundant reserves. Apart from iron and aluminum metals, it is known as the rising "third metal". It is precisely because of the excellent structural and functional properties of titanium and titanium alloy materials that they can be used not only as high-quality lightweight corrosion-resistant structural materials, but also as new functional materials and important biomedical materials. In many application fields, titanium alloy, as a typical representative material of light weight and high strength, has a wide range of applications in the selection of imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F9/24B22F1/00B22F1/02B22F3/02B22F3/18B22F3/20B22F5/00B22F9/04C22C14/00C01B32/194
CPCB22F1/0003B22F3/105B22F9/24B22F3/02B22F3/18B22F3/20C22C14/00B22F9/04B22F5/006B22F5/00C01B32/194B22F2009/043B22F1/16Y02P10/25
Inventor 董龙龙周廉崔文芳张于胜
Owner NORTHEASTERN UNIV
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