Preparation method of three-dimensional graphene reinforced nickel-base composite material through three-dimensional (3D) printing in-situ synthesis
A technology of 3D printing and in-situ synthesis, which is used in additive processing, additive manufacturing, and energy efficiency improvement. It can solve the problems of controllability and efficiency that need to be improved, and cannot completely inhibit graphene agglomeration, so as to promote good interfacial bonding. , Reduce the difficulty and time of preparation, and enhance the effect of performance
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Embodiment 1
[0032] Take a beaker (capacity 500mL) and place it on a constant temperature heating platform (closed state), weigh 3g of nickel powder (particle size 10μm), 0.2g of sucrose in it, add 120mL of deionized water, and use an electric stirrer at a rotation speed of 320rpm The precursor suspension was continuously mechanically stirred. Take a beaker (capacity 100mL), weigh 30mg of less-walled carbon nanotubes and 30mg of Pluronic F127 into it, add 60mL of deionized water, and use a probe-type ultrasonic pulverizer to sonicate for 30min at a power of 120W to obtain a carbon nanotube dispersion . Subsequently, the obtained carbon nanotube dispersion was added to the precursor suspension that was being mechanically stirred, and the constant temperature heating platform (heating temperature 110°C) was turned on, and the above solution was heated and evaporated to dryness. After being evaporated to dryness, the beaker was Transfer to a vacuum oven (pressure 2.0 mmHg) to dry for 24 hour...
Embodiment 2
[0034] Take a beaker (capacity 500mL) and place it on a constant temperature heating platform (closed state), weigh 3g of nickel powder (particle size 5μm) and 0.2g of PMMA into it, add 120mL of chloroform, and use an electric stirrer at a rotation speed of 320rpm to the precursor The suspension was mechanically stirred continuously, and the constant temperature heating platform was turned on (heating temperature 110°C), and the above solution was heated and evaporated to dryness. After evaporation, the beaker was transferred to a vacuum oven (pressure 2.0mmHg) to dry for 24 hours, and the composite precursor was taken out. body powder, grind it with a mortar and pestle. Finally, repeat the above steps to obtain about 300g of composite precursor powder and place it in the powder bin of a 3D printer (carbon dioxide laser). than 100%. Printing is performed to obtain a 3D printed in-situ synthesized three-dimensional graphene-reinforced nickel-based composite material block of t...
Embodiment 3
[0036]Take a beaker (capacity 2000mL) and put it on a constant temperature heating platform (closed state), weigh 30g nickel powder (particle size 10μm), 5g sucrose in it, add 1200mL1:1 ethanol aqueous solution, use an electric stirrer at a rotation speed of 320rpm The precursor suspension was continuously mechanically stirred for 20 min until it was evenly mixed. Use a rotary evaporator to remove the solvent in the above suspension, put the obtained composite precursor powder into a vacuum oven (pressure 2.0mmHg) and dry for 24h, take out the dried composite precursor powder, and use a mortar and pestle to process it. grind. Finally, repeat the above steps to obtain about 300g of composite precursor powder and put it in the powder bin of the 3D printer (fiber laser), and adjust the parameters as follows: laser power 300W, point distance 60μm, line distance 120μm, exposure time 0.02s. Printing is performed to obtain a 3D printed in-situ synthesized three-dimensional graphene-...
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