Uniform Spherical Graphene/Monocrystal-Copper Powder Fabricated by the Low Wettability of Liquid/Solid Interface

Uniform spherical graphene/monocrystal-copper powder is fabricated by melting bulk laminated composite. Graphene, in the form of reduced graphene oxide (rGO), is uniformly dispersed on the surface of monocrystal Cu particle. A mechanism is proposed based on liquid/solid interface interaction combini...

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Bibliographic Details
Published in:KONA Powder and Particle Journal 2019/01/10, Vol.36, pp.224-231
Main Authors: Lyu, Jimin, Xiong, Ding-Bang, Tan, Zhanqiu, Fan, Genlian, Guo, Qiang, Guo, Cuiping, Li, Zhiqiang, Zhang, Di
Format: Article
Language:English
Subjects:
3-D printers
Aluminum composites
Carbon
Composite materials
Copper
Energy conservation
Graphene
graphene/copper
Graphite
liquid/solid interface
low wettability
Materials science
Mechanical properties
Nanotechnology
Particle size
Particle size distribution
Polyvinyl alcohol
Powder metallurgy
powder technology
Scanning electron microscopy
Single crystals
Spherical powders
Stainless steel
Surface energy
Wettability
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Summary:Uniform spherical graphene/monocrystal-copper powder is fabricated by melting bulk laminated composite. Graphene, in the form of reduced graphene oxide (rGO), is uniformly dispersed on the surface of monocrystal Cu particle. A mechanism is proposed based on liquid/solid interface interaction combining the surface energy minimization of liquid Cu and low wettability of molten Cu on graphene. The rGO/Cu composite powder exhibits good sphericity, and the size distribution could be controlled by the amount of rGO.
ISSN:0288-4534
2187-5537
DOI:10.14356/kona.2019001