Interface engineering of graphene/copper matrix composites decorated with tungsten carbide for enhanced physico-mechanical properties
نویسندگان
چکیده
Abstract For metal matrix composites (MMCs), introduction of low-dimensional nano-carbon materials (NCMs) into three dimensional metallic is commonly applied to enhance mechanical and physical properties metals thus significantly extend their wide range applications. However, the interfaces between NCMs are always a major issue for achieving best enhancement effects. In this paper, we investigated interfacial structures graphene nanoplates (GNPs) reinforced Cu fabricated using simple industrially scalable strategy, through integration interface engineering design methodology spark plasma sintering (SPS) process. We then systematically evaluated physico-mechanical properties, characteristics strengthening mechanisms. The in-situ formed WxCy nano-layers carbide nanoparticles on surfaces GNPs near grains promote strong bonding improves cohesive strength based nanocomposites. GNPs-W/Cu show good balance electrical conductivity. Their 0.2% yield ultimate tensile have been improved up 239.13% (112.73%) 197.76% (72.51%), respectively, when compared with those pure copper (or GNPs/Cu composites). Electrical conductivity shows no apparent changes after addition GNPs. dislocation strengthening, refinement load transfer were achieved simultaneously engineered in composites. This work has provided new strategy fabricate high-performance enhanced MMCs by methodology.
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ژورنال
عنوان ژورنال: Carbon
سال: 2021
ISSN: ['0008-6223', '1873-3891']
DOI: https://doi.org/10.1016/j.carbon.2020.10.091