期刊
COMPOSITES COMMUNICATIONS
卷 24, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.coco.2020.100619
关键词
Strength; Electrical conductivity; Plasma assisted milling; Cu matrix composites; Graphene
资金
- National Key R&D Program of China [2017YFB0406200]
- National Natural Science Foundation of China [51771110, 51971131]
Plasma assisted ball milling was introduced to modify the graphene/copper interface in the final composite powders, resulting in improved strength and electrical conductivity compared to unmodified composites. The modified composites maintained comparable ductility while showing enhanced overall performance.
Copper matrix composites reinforced by in-situ grown graphene provides a promising approach to realize both high strength and high electrical conductivity in metallic conductors. However, in-situ growth on Cu powder usually cause wrinkles and thick layer thickness in the graphene, which could form defects in the final composites. Here, a method of plasma assisted ball milling is introduced to treat on the in-situ grown graphene/ copper composite powders and ultimately modify the graphene/copper interface in the final composite. As compared to the counterpart composites without the modification, the final modified composites show higher strength and higher electrical conductivity while remains comparable ductility. The mechanisms for the improvements on the mechanical and electrical properties are also discussed based on its microstructure analysis.
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