Microstructure and properties of bulk copper matrix composites strengthened with various kinds of graphene nanoplatelets

Dutkiewicz, J.; Ozga, P.; Maziarz, W.; Pstruś, J.; Kania, B.; Bobrowski, Piotr; Stolarska, Justyna

doi:10.1016/j.msea.2015.01.018

Cited by 128 publications

(60 citation statements)

References 19 publications

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“…Currently, the most common ways for fabricating graphene-reinforced MMCs are a number of powder metallurgy techniques, for example, spark plasma sintering, laser sintering, and hot pressing [70][71][72][73][74][75]. e existing studies showed great capability of graphene-reinforced MMCs to improve the material properties, for example, strength [70][71][72], Young's modulus [72,76], hardness [72,76], wear resistance [72][73][74], and electrical conductivity [75].…”

Section: D Material-reinforced Mmc Coatings Viamentioning

confidence: 99%

Cold‐Sprayed Metal Coatings with Nanostructure

Yin

Chen

Suo

et al. 2018

Advances in Materials Science and Engineering

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Cold spray is a solid-state coating deposition technology developed in the 1980s. In comparison with conventional thermal spray processes, cold spray can retain the original properties of feedstock, prevent the adverse influence on the underlying substrate materials, and produce very thick coatings. Coatings with nanostructure offer the potential for significant improvements in physical and mechanical properties as compared with conventional non-nanostructured coatings. Cold spray has also demonstrated great capability to produce coatings with nanostructure. is paper is aimed at providing a comprehensive overview of cold-sprayed metal coatings with nanostructure. A brief introduction of the cold spray technology is provided first. e nanocrystallization phenomenon in the conventional cold-sprayed metal coatings is then addressed. ereafter, focus is switched to the microstructure and properties of the cold-sprayed nanocrystalline metal coatings, and the cold-sprayed nanomaterialreinforced metal matrix composite (MMC) coatings. At the end, summary and future perspectives of the cold spray technology in producing metal coatings with nanostructure are concluded.

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Section: D Material-reinforced Mmc Coatings Viamentioning

confidence: 99%

Cold‐Sprayed Metal Coatings with Nanostructure

Yin

Chen

Suo

et al. 2018

Advances in Materials Science and Engineering

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“…At present, the attention of researchers working on the development of promising new materials is concentrated not only on the synthesis of pure carbon structures but also on producing composites in which the reinforcing carbon phase comprises a filler for the metal matrix due to a significant increase in the mechanical properties of composites as compared with pure metals, the appearance of a toughening effect, an increase in matrix resistance to loads, an increase in hardness and many others …”

Section: Introductionmentioning

confidence: 99%

Raman spectroscopy study of graphene formed by “in situ” chemical interaction of an organic precursor with a molten aluminium matrix

Yolshina

Вовкотруб

Shatunova

et al. 2019

J Raman Spectroscopy

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A study of graphene “in situ” formed during the chemical interaction of glucose with molten aluminium under a layer of molten alkaline halides in air at temperatures of 750–850°C is presented. By means of Raman and X‐ray photoelectron spectroscopy and electron microscopy, it is shown that graphene films synthesize in the aluminium. The number and defectiveness of graphene layers inside aluminium matrix depends on synthesis temperature– at 750°C two‐layer graphene and at 850°C three‐layer graphene form. The most defective graphene films synthesized at 750°C with the formation of five‐ and seven‐membered rings in plane of the graphene grid; the number of defects of graphene films is less for composite obtained at higher temperature. The evaluated defectiveness of graphene not exceed 14%; it evidences the formation of perfect graphene in aluminium matrix. The compressive stress value is the smallest for the sample obtained at 750°C and increases with temperature and plastic deformation because of differences in the crystal lattice parameters and their thermal expansion coefficients of aluminium and graphene. This fact explains the relation of defects number in graphene with temperature and plastic deformation. No aluminium carbide and graphene oxide were formed during synthesis inside aluminium matrix because of formation of defect‐free perfect graphene with high chemical stability. The absence of aluminium carbide was proven by means Raman spectroscopy, X‐ray photoelectron, transmission electron microscopy, and corrosion test with distilled water. It allows to propose aluminium‐graphene composites for numerous practical applications as a constructive material.

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“…At a graphene content of 0.6 vol%, the yield strength of the composite reached a maximum value of 310 MPa (an increase of 118.3%); however, fracture elongation decreased from ≈30% (pure Cu) to ≈6.1%. Dutkiewicz et al . prepared graphene/copper matrix composites by vacuum uniaxial hot pressing of ball‐milled powder mixtures.…”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide–Refined Cu Matrix Composites: An Experimental and First‐Principles Study

Yan

Hong

Chen

et al. 2019

Crystal Research and Technology

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Reduced graphene oxide/copper matrix composites (RGO/Cu) are successfully fabricated via powder metallurgy methods. Composite powders of electrolytic Cu and 0.5 or 1.0 wt% graphene oxide (GO) are prepared by high‐energy ball milling. The composites are then consolidated using hot‐press sintering with a pressure of 22 MPa at 800 °C under a vacuum of 2 × 10−2 Pa. Microstructural observations of the RGO formed from GO show that it is located along the Cu grain boundaries and CuO nanoparticles distributed inside the Cu grain. The average grain sizes are 30.11 (pure Cu), 24.75 (0.5 wt% RGO/Cu composites), and 19.66 µm (1.0 wt% RGO/Cu composites). The Vickers hardness and tensile strengths of the RGO/Cu composites are higher than those of pure Cu. Theoretical research based on first‐principles calculations shows that oxygen atoms from the decomposition of GO react with Cu to form CuO nanoparticles. This secondary phase behaves as a pin that hinders the growth of copper grains. The covalent bonding between RGO and Cu slightly limits the movement of neighboring Cu atoms. More importantly, the grain refinement mechanism is related to the RGO retarding the diffusion of Cu atoms along the interface of copper grains due to its large activation energy.

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Microstructure and properties of bulk copper matrix composites strengthened with various kinds of graphene nanoplatelets

Cited by 128 publications

References 19 publications

Cold‐Sprayed Metal Coatings with Nanostructure

Cold‐Sprayed Metal Coatings with Nanostructure

Raman spectroscopy study of graphene formed by “in situ” chemical interaction of an organic precursor with a molten aluminium matrix

Reduced Graphene Oxide–Refined Cu Matrix Composites: An Experimental and First‐Principles Study

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