Preparation method of in-situ grown graphene reinforced metal-based composite material
A metal composite material and composite material technology, applied in the field of metal matrix composite material preparation, can solve the problems of dangerous process, low strength, and many defects, and achieve the effects of easy industrialized mass production, high degree of crystallization, and short preparation cycle
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[0021] Example 1.
[0022] 0.6 g of sucrose and 18 g of nickel powder (the mass ratio of sucrose in the composite powder is 3.23%) are uniformly mixed in 200 mL of water (the sucrose can be completely dissolved), mechanically stirred, and heated at 70° C. to dry. After 24 hours of vacuum drying (10torr) and grinding, a nickel powder / sucrose preformed powder was obtained. Put the prefabricated powder in a hot press, under the protection of argon gas (500mL / min), heat up from room temperature to 1000°C at a rate of 10°C / min, hold for 30min, load pressure 1000MPa, and cool down with the furnace, one-step method Get graphene reinforced nickel-based composite materials, such as figure 1 Shown is a graphene-reinforced nickel-based composite block with a diameter of 30 mm and a thickness of approximately 3 mm. The prepared material was subjected to surface corrosion using a 1 mol / L ferric chloride solution and observed by scanning electron microscope (SEM). Such as figure 2 The micr...
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[0023] Example 2.
[0024] 0.3 g of glucose and 30 g of copper-nickel alloy powder were uniformly mixed in 200 mL of water (glucose accounted for 0.99%), mechanically stirred, and heated at 70° C. to dry. After 24 hours of vacuum drying (10torr) and grinding, the copper nickel / glucose preformed powder was obtained. Put the prefabricated powder in a hot press, under the protection of argon (100mL / min) atmosphere, heat up from room temperature to 1300℃ at a rate of 10℃ / min, keep it for 48h, load pressure 2000MPa, and cool down with the furnace, one step Method to obtain graphene reinforced copper-nickel alloy matrix composite material. A higher temperature will increase the degree of graphene graphene to a certain extent.
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[0025] Example 3.
[0026] 0.3 g of glucose and 30 g of nickel powder were uniformly mixed in 200 mL of water (glucose accounted for 0.99%), mechanically stirred, and heated at 70°C to be evaporated to dryness. After 24 hours of vacuum drying (10torr) and grinding, a nickel / glucose preformed powder was obtained. Place the prefabricated powder in a hot press, under the protection of argon gas (300mL / min), increase the temperature from room temperature to 500℃ at a rate of 10℃ / min, keep it for 24h, load the pressure to 10MPa, and cool down with the furnace, one step Method to obtain graphene reinforced nickel-based composite material.
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