Enhanced Mechanical Properties of Graphene (Reduced Graphene Oxide)/Aluminum Composites with a Bioinspired Nanolaminated Structure

Abstract

Bulk graphene (reduced graphene oxide)-reinforced Al matrix composites with a bioinspired nanolaminated microstructure were fabricated via a composite powder assembly approach. Compared with the unreinforced Al matrix, these composites were shown to possess significantly improved stiffness and tensile strength, and a similar or even slightly higher total elongation. These observations were interpreted by the facilitated load transfer between graphene and the Al matrix, and the extrinsic toughening effect as a result of the nanolaminated microstructure.

Enhanced Interfacial Bonding and Mechanical Properties of Graphene/Cu Composites: A Matrix-Alloying Method

“…After thermal reduction, the intensity of oxygen‐containing groups (CO/COC, CO and OCO) on RGO/CuTi composite flakes decreases remarkably, suggesting the efficient reduction of GO to RGO in the RGO/CuTi composite flakes. The magnified SEM images of both 1 vol.% (Figure c) and 2 vol.% (Figure d) RGO/CuTi composite flakes show that the thin‐layered crumpled RGO is entirely adhered on the surface of CuTi flakes, revealing that the FPM method is very effective in the homogeneous distribution of RGO on the CuTi flakes, consistent well with the reported results . However, when the RGO fraction reaches 3.0 vol.%, the thick RGO agglomerates can be found in some regions, as shown in Figure e (marked by ellipse), hinting the poor RGO/CuTi uniformity.…”

Zeolitic imidazolate frameworks‐8 modified graphene as a green flame retardant for reducing the fire risk of epoxy resin

“…Since graphene was first made by British physicists Geim and Novoseiov in 2004, it has been receiving extensive attention. Graphene, a 2‐dimensional material consisting of sp2‐bonded carbon sheets is widely used in electrochemistry, energy, composite materials, and other fields due to its unique mechanical, electrical, optical, thermal, and other physical and chemical properties . In recent years, graphene has been developed and applied in the field of flame retardants, and researchers have used it as a flame retardant to improve the flame retardancy of polymers.…”

“…Therefore, it is necessary to improve the flame retardancy and smoke suppression of EP.Since graphene was first made by British physicists Geim and Novoseiov in 2004, it has been receiving extensive attention.Graphene, a 2-dimensional material consisting of sp2-bonded carbon sheets is widely used in electrochemistry, energy, composite materials, and other fields due to its unique mechanical, electrical, optical, thermal, and other physical and chemical properties. [5][6][7][8][9] In recent years, graphene has been developed and applied in the field of flame retardants, and researchers have used it as a flame retardant to improve the flame retardancy of polymers. Gao et al discovered in their study that, when 5 wt% GO was added into PVC, the peak heat release rate (PHRR) and total heat release (THR) of GO/PVC composite were decreased by 13.3% and 18.6%, respectively, compared with those of pure PVC.…”

Dust-aggregate impact into granular matter: A systematic study of the influence of projectile velocity and size on crater formation and grain ejection

“…Such simulations have been successfully applied to understanding the collision behavior of dust aggregates composed of thousands of grains and to determine the erosion and growth characteristics (Wada et al 2007;Paszun & Dominik 2009;Wada et al 2011;Ringl et al 2012a;Gunkelmann et al 2016a;Li et al 2016). This technique was also applied to the process of crater formation in a granular bed (Ringl et al 2012b;Hurley et al 2015;Li et al 2015), albeit only with monomeric, that is, indestructible, projectiles.…”