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Preparation method for synthesizing three-dimensional graphene reinforced nickel-based composite material in situ

A composite material and in-situ synthesis technology, which is applied in the field of in-situ synthesis of three-dimensional graphene-reinforced nickel-based composite materials, and achieves the effects of good dispersion, simple reaction process and controllable structure.

Inactive Publication Date: 2017-05-31
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, the current methods for preparing graphene-reinforced nickel-based composites still face challenges in achieving uniform dispersion of graphene, maintaining the integrity of graphene structure, and good combination with nickel matrix. Therefore, it is necessary to find a suitable composite method It is the key to develop high-performance graphene-reinforced nickel-based composites to achieve the composite of graphene and nickel matrix and improve the reinforcement efficiency of graphene to make up for the shortcomings of existing preparation methods.

Method used

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  • Preparation method for synthesizing three-dimensional graphene reinforced nickel-based composite material in situ
  • Preparation method for synthesizing three-dimensional graphene reinforced nickel-based composite material in situ
  • Preparation method for synthesizing three-dimensional graphene reinforced nickel-based composite material in situ

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Effect test

Embodiment 1

[0024] Weigh 1.000g of glucose, 0.431g of nickel nitrate hexahydrate and 21.535g of sodium chloride, mix them and dissolve them in 80ml of deionized water, stir and dissolve with a magnetic stirrer at a stirring speed of 250r / min to form a solution, and mix well A light green solution was obtained. Put the mixed solution in the refrigerator for 12 hours to freeze, and then place it in a freeze dryer at -50°C for 24 hours under vacuum to freeze-dry to obtain a three-dimensional graphene precursor mixture. Grind the mixture and pass through a 100-mesh sieve, take 10g of composite powder and spread it on the corundum ark, place the corundum ark in the constant temperature zone of the high-temperature tube furnace, and pass the air in the argon exhaust pipe at a rate of 100ml / min, and switch after 20min To a mixture of argon and hydrogen at a ratio of 4:1, the tube furnace is heated to 750°C at a heating rate of 5°C / min, kept for 2 hours, and then cooled to room temperature at a c...

Embodiment 2

[0026]Weigh 1.000g of glucose, 0.431g of nickel nitrate hexahydrate and 21.535g of sodium chloride, mix them and dissolve them in 80ml of deionized water, stir and dissolve with a magnetic stirrer at a stirring speed of 250r / min to form a solution, and mix well A light green solution was obtained. Put the mixed solution in the refrigerator for 12 hours to freeze, and then place it in a freeze dryer at -50°C for 24 hours under vacuum to freeze-dry to obtain a three-dimensional graphene precursor mixture. Grind the mixture and pass through a 100-mesh sieve, take 10g of composite powder and spread it on the corundum ark, place the corundum ark in the constant temperature zone of the high-temperature tube furnace, and pass the air in the argon exhaust pipe at a rate of 100ml / min, and switch after 20min To a mixture of argon and hydrogen at a ratio of 4:1, the tube furnace is heated to 750°C at a heating rate of 5°C / min, kept for 2 hours, and then cooled to room temperature at a co...

Embodiment 3

[0028] Weigh 1.000g of glucose, 0.431g of nickel nitrate hexahydrate and 21.535g of sodium chloride, mix them and dissolve them in 80ml of deionized water, stir and dissolve with a magnetic stirrer at a stirring speed of 250r / min to form a solution, and mix well A light green solution was obtained. Put the mixed solution in the refrigerator for 12 hours to freeze, and then place it in a freeze dryer at -50°C for 24 hours under vacuum to freeze-dry to obtain a three-dimensional graphene precursor mixture. Grind the mixture and pass through a 100-mesh sieve, take 10g of composite powder and spread it on the corundum ark, place the corundum ark in the constant temperature zone of the high-temperature tube furnace, and pass the air in the argon exhaust pipe at a rate of 100ml / min, and switch after 20min To a mixture of argon and hydrogen at a ratio of 4:1, the tube furnace is heated to 750°C at a heating rate of 5°C / min, kept for 2 hours, and then cooled to room temperature at a c...

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Abstract

The invention discloses a preparation method for synthesizing a three-dimensional graphene reinforced nickel-based composite material in situ. The preparation method comprises the following steps of: taking glucose or citric acid as a carbon source, taking nickel nitrate hexahydrate as a nickel source, and combining a soluble salt template NaCl to co-mix and dissolve into a deionized water solution, thereby obtaining a light green uniform solution; performing freeze-drying and grinding treatment to obtain powder; putting the powder into a constant-temperature region of a high-temperature tubular furnace to synthesize to obtain mixed powder of sodium chloride-three-dimensional graphene loaded nickel; washing the mixed powder until sodium chloride is completely removed, and performing drying treatment to obtain nano nickel modified three-dimensional graphene powder; and uniformly coating nano nickel modified three-dimensional graphene composite powder with basic nickel nitrate to obtain composite powder of three-dimensional graphene nickel powder.

Description

technical field [0001] The invention relates to a preparation method for in-situ synthesis of three-dimensional graphene-reinforced nickel-based composite materials, belonging to the field of metal-based composite material preparation. Background technique [0002] graphene by sp 2 Composed of hybrid single-layer carbon atoms, with a periodically arranged honeycomb lattice structure, it has excellent electrical and thermal conductivity and mechanical properties. The elastic modulus and tensile strength of single-layer graphene can reach 1TPa and 130GPa, respectively. An ideal reinforcement phase for composite materials. Nickel-based composite materials are widely used in most load-bearing components, structural materials, and hot ends of aero-engines in the aerospace field due to their excellent high-temperature strength, thermal fatigue resistance, oxidation resistance, and corrosion resistance. Broad development prospects. Existing studies have shown that adding graphen...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C19/03
CPCC22C1/05C22C19/03C22C32/0084
Inventor 何春年付凯张翔赵乃勤师春生刘恩佐何芳李群英李家俊
Owner TIANJIN UNIV
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