期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2014.01.061
关键词
Graphene; Nanocomposite; Young's modulus; Yield strength
类别
资金
- General Projects of Hebei North University [2013003]
- Zhangjiakou Science and Technology Bureau projects [1321022B]
The present work reports the mechanical improvement in Cu matrix composites reinforced with graphene nanosheets decorated with Ni nanoparticles (GNS-Ni) hybrids. The GNS-Ni hybrids were firstly synthesized by an in situ chemical reduction method and then incorporated into the Cu matrix to fabricate bulk GNS-Ni/Cu composites by spark plasma sintering. Benefiting from the unique characteristic of GNS-Ni hybrids, the GNS Ni/Cu composites exhibited homogeneously dispersed GNSs and a strong GNS-Cu interface interaction, therefore leading to a 61% increase in Young's modulus (132 GPa) and a 94% improvement in yield strength (268 MPa) by addition of only 1.0 vol% GNSs. The GNS-Ni/Cu composites exhibited a load transfer mechanism as verified by a modified shear-lag model. Our study thus shows the potential for GNS Ni hybrids to be successfully used as a reinforcing phase in metal matrix composites. (c) 2014 Elsevier B.V. All rights reserved.
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