期刊
ADVANCED COMPOSITES AND HYBRID MATERIALS
卷 5, 期 1, 页码 504-512出版社
SPRINGERNATURE
DOI: 10.1007/s42114-021-00336-8
关键词
Graphene; Surface modification; Wettability; Magnesium-matrix composites
资金
- National Natural Science Foundation of China [51775521]
- China Postdoctoral Science Foundation [2019M661068]
- Key Research and Development Project of Shanxi Province [201903D121009]
- Natural Science Foundation of Shanxi Province [201801D221154]
- Major Science and Technology Projects of Shanxi Province, China [20181102012]
The successful coating of magnesium nano-metal on the surface of graphene using organic chemical reduction method has greatly improved the microstructure and reinforcement effect of magnesium-matrix composite materials.
The surface of graphene (GNP) has been successfully coated with magnesium nano-metal to form composite structures in situ via the organic chemical reduction method. The results demonstrate that the organic chemistry plated was successfully used to synthesize 30-50 nm Mg nanoparticles (nano-Mg) smoothly occurred on the surface of graphene. The HRTEM results confirmed that heterogeneous nucleation of Mg promoted the tight bonding between the nano-Mg and the graphene interfaces. In addition, the wettability and dispersibility of magnesium-coated graphene within the AZ91 alloy matrix have been greatly improved, resulting in more beta-Mg17Al12 strengthening phase with a size of 100-300 nm dispersion and precipitation in the enhanced magnesium-matrix composite. These results reveal that the magnesium-coated graphene significantly affects the microstructure of the composite and exhibits an excellent reinforcement effect.
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