Journal ArticleDOI
Graphene-and-Copper Artificial Nacre Fabricated by a Preform Impregnation Process: Bioinspired Strategy for Strengthening-Toughening of Metal Matrix Composite.
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TLDR
The RGrO-and-Cu artificial nacres exhibited simultaneous enhancement on yield strength and ductility as well as increased modulus, attributed to R GrO strengthening, effective crack deflection and a possible combined failure mode of RGr O.Abstract:
Metals can be strengthened by adding hard reinforcements, but such strategy usually compromises ductility and toughness. Natural nacre consists of hard and soft phases organized in a regular “brick-and-mortar” structure and exhibits a superior combination of mechanical strength and toughness, which is an attractive model for strengthening and toughening artificial composites, but such bioinspired metal matrix composite has yet to be made. Here we prepared nacre-like reduced graphene oxide (RGrO) reinforced Cu matrix composite based on a preform impregnation process, by which two-dimensional RGrO was used as “brick” and inserted into “□-and-mortar” ordered porous Cu preform (the symbol “□” means the absence of “brick”), followed by compacting. This process realized uniform dispersion and alignment of RGrO in Cu matrix simultaneously. The RGrO-and-Cu artificial nacres exhibited simultaneous enhancement on yield strength and ductility as well as increased modulus, attributed to RGrO strengthening, effective ...read more
Citations
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Ultratough artificial nacre based on conjugated cross-linked graphene oxide
TL;DR: As the water-soluble derivative of graphene, graphene oxide (GO), with many functional groups on thesurface, is one of the best candidates for fabricating artificialnacre, because functional surface groups allow for chemical cross-linking to improve the interfacial strength of theadjacent GO layers.
Journal ArticleDOI
Thermal properties of graphene/metal composites with aligned graphene
TL;DR: In this article, a high alignment of graphene nanosheets (GNSs) in GNS/Cu composites was achieved through a vacuum filtration method followed by spark plasma sintering.
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Graphene-reinforced metal matrix nanocomposites – a review
TL;DR: The research works of graphene-reinforced metal matrix composites are summarized in this paper, where the microstructure and mechanical properties, processing techniques, graphene dispersion, strengthening mechanisms, interfacial reactions between graphene and the metal matrix and future research works in this field are discussed.
Journal ArticleDOI
A Plant-Transpiration-Process-Inspired Strategy for Highly Efficient Solar Evaporation
TL;DR: In this article, a wood-polydopamine-based photothermal material is developed for solar-steam generation, which can be used in real-world applications such as solar-evaporation.
Journal ArticleDOI
Largely enhanced thermal conductivity of graphene/copper composites with highly aligned graphene network
Ke Chu,Xiao-hu Wang,Fan Wang,Yu-biao Li,Da-jian Huang,Hong Liu,Ma Wenlin,Feng-xia Liu,Hu Zhang +8 more
TL;DR: In this article, the authors reported an efficient route to prepare the graphene nanoplatelet (GNP)/Cu composites with highly aligned GNPs by a vacuum filtration method followed by spark plasma sintering.
References
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Journal ArticleDOI
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
TL;DR: Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.
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A roadmap for graphene
Kostya S. Novoselov,Vladimir I. Fal'ko,Luigi Colombo,Paul Gellert,M. G. Schwab,Kyoung-Soo Kim +5 more
TL;DR: This work reviews recent progress in graphene research and in the development of production methods, and critically analyse the feasibility of various graphene applications.
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Bioinspired structural materials
TL;DR: The common design motifs of a range of natural structural materials are reviewed, and the difficulties associated with the design and fabrication of synthetic structures that mimic the structural and mechanical characteristics of their natural counterparts are discussed.
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The Halpin-Tsai Equations: A Review
TL;DR: The Halpin-Tsai equations are based upon the self-consistent micromechanics method developed by Hill as discussed by the authors. But they are not suitable for semi-crystalline polymers.
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Enhanced mechanical properties of nanocomposites at low graphene content.
TL;DR: Graphene platelets significantly out-perform carbon nanotube additives in terms of mechanical properties enhancement, and may be related to their high specific surface area, enhanced nanofiller-matrix adhesion/interlocking arising from their wrinkled (rough) surface, as well as the two-dimensional geometry of graphene platelets.