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Surface laser cladding method of titanium oxide wrapped graphene oxide/aluminum-based composite material

An aluminum matrix composite material and laser cladding technology, which is applied in the coating process and coating of metal materials, can solve the lack of graphene oxide reinforced aluminum matrix composite material preparation and forming technology, high powder waste, and long production cycle and other problems to achieve the effect of reducing stratification, low risk factor and reducing dust pollution

Active Publication Date: 2019-01-04
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, due to the limitations of electroless plating, this method is more harmful to the human body, and it also needs to carboxylate graphene separately, which has a long production cycle. At the same time, it uses the powder spraying sintering method, which has a high degree of waste for this type of powder and has certain limitations
[0007] Therefore, there is still a lack of a cost-effective preparation and forming technology for graphene oxide reinforced aluminum matrix composites.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Graphene oxide was ultrasonically pre-dispersed in analytical pure ethanol for 1 hour, the temperature was at room temperature, and no water vapor was controlled throughout. The ratio was strictly controlled at 0.2g:50ml, and then the obtained dispersion was poured into a precursor solution consisting of glycerol and tetraisopropyl titanate, sealed and ultrasonically treated for 1 hour. Among them, the volume ratio of glycerol and tetraisopropyl titanate is 10:0.4. Afterwards, hydrothermal treatment is carried out, wherein the volume of the suspension accounts for 50% of the volume of the reactor. Then put it into the reaction furnace to heat, raise the temperature to 90°C at 5°C / min, keep it for 2h, then raise the temperature to 180°C at 3°C / min, and keep it for 10h. Cool in air after taking out the reactor. The resulting solution was taken out, centrifuged, and centrifuged several times by pouring analytical pure ethanol until the solution was colorless. The whole ...

Embodiment 2

[0032] Graphene oxide was ultrasonically pre-dispersed in analytical pure ethanol for 3 hours, the temperature was at room temperature, and no water vapor was controlled throughout. The ratio was strictly controlled at 0.2g:50ml, and then the obtained dispersion was poured into a precursor solution consisting of glycerol and tetraisopropyl titanate, sealed and ultrasonically treated for 1 hour. Among them, the volume ratio of glycerol and tetraisopropyl titanate is 10:0.8. Afterwards, hydrothermal treatment is carried out, wherein the volume of the suspension accounts for 50% of the volume of the reactor. Then put it into the reaction furnace to heat, raise the temperature to 90°C at 3°C / min, keep it for 1h, then raise the temperature to 180°C at 2°C / min, and keep it for 12h. Cool in air after taking out the reactor. The resulting solution was taken out, centrifuged, and centrifuged several times by pouring analytical pure ethanol until the solution was colorless. The whole...

Embodiment 3

[0035]Graphene oxide was ultrasonically pre-dispersed in analytical pure ethanol for 2 hours, the temperature was at room temperature, and no water vapor was controlled throughout. The proportioning ratio was strictly controlled at 0.4g:50ml, and then the resulting dispersion was poured into a precursor solution composed of glycerol and tetraisopropyl titanate, sealed and sonicated for 1 hour. Among them, the volume ratio of glycerol and tetraisopropyl titanate is 10:0.4. Afterwards, hydrothermal treatment is carried out, wherein the volume of the suspension accounts for 60% of the volume of the reactor. Then put it into the reaction furnace to heat, raise the temperature to 100°C at 1°C / min, keep it for 2h, then raise the temperature to 180°C at 3°C / min, and keep it for 10h. Cool in air after taking out the reactor. The resulting solution was taken out, centrifuged, and centrifuged several times by pouring analytical pure ethanol until the solution was colorless. The whole...

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PUM

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Abstract

The invention relates to a surface laser cladding method of a titanium oxide wrapped graphene oxide / aluminum-based composite material. The method includes: hydrothermal high pressure is used to adsorbTi ions in a water-free environment under the effect of the functional groups of graphene oxide, anatase GO@TiO2 is obtained in after baking, the obtained powder is mixed with Ti powder and glycerolaccording to a certain proportion to obtain sticky mixed powder, polishing base aluminum with abrasive paper, the surface of the base aluminum is evenly coated with the sticky mixed powder, a flamer is used to fast and evenly pre-sinter the power on the surface of the aluminum base, laser cladding is used to process the material to obtain a cladding material. The method has the advantages that thecladding material on the surface of the aluminum base is small in friction coefficient, high in surface hardness and the like; the method is simple, safe, low in cost, easy to operate, controllable and the like.

Description

technical field [0001] The invention belongs to the technical field of material preparation. Background technique [0002] Graphene nanosheets are one-atom-layer-thick two-dimensional materials composed of sp2 hybridized carbon atoms, which exhibit a series of unusual physical properties. Because of its special two-dimensional structure, graphene nanosheets have attracted great interest from researchers in physics, chemistry and materials science. Basic research and engineering application research on graphene have become a research hotspot in recent years. Due to the high strength of graphene, its tensile strength can reach 130GPa, implying that graphene has a huge application space in material application research. [0003] In fact, the research of using carbon materials such as carbon nanotubes or graphene to enhance the strength and other mechanical properties of aluminum-based materials has been going on and has achieved a certain degree of progress. However, due to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 闫洪吴庆捷
Owner NANCHANG UNIV
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