Journal ArticleDOI
Effect of ball milling on graphene reinforced Al6061 composite fabricated by semi-solid sintering
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In this paper, a 1.0-wt.% graphene reinforced aluminum 6061 (Al6061) composite was synthesized to investigate the effects of graphene dispersion by ball milling technique.Abstract:
A 1.0 wt.% graphene reinforced aluminum 6061 (Al6061) composite was synthesized to investigate the effects of graphene dispersion by ball milling technique. The Al6061 powder and graphene were ball milled at different milling times. The composites were then synthesized by hot compaction in the semi-solid regime of the Al6061. A three point bending test was performed to characterize the mechanical properties of the composite. The ball milled powder and the fracture surfaces of the composites were analyzed using the scanning electron microscopy. A maximum enhancement of 47% in flexural strength was observed when compared with the reference Al6061 processed at the same condition.read more
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Book ChapterDOI
A Comparative Study of Carbon Nanotubes and Graphene Nanoplatelets on Structure-Property Relationship of Aluminium Matrix Composites Synthesized by Spark Plasma Sintering
M. Khan,Muhammad Shahzad,Muhammad Abdul Basit,Rafi Ud Din,Shahid Akhtar,S. Wilayat Husain,Ragnhild E. Aune +6 more
TL;DR: In this paper , carbon nanotubes (CNTs) and Graphene Nanoplatelets (GNPs) have been incorporated into an aluminium matrix using the Spark Plasma Sintering (SPS) process.
Przewodnictwo cieplne kompozytów o osnowie metalowej zbrojonych węglem
TL;DR: In this article, a critical analysis of the current state-of-the-art thermo-physical properties of metal composite materials, in which different types of carbon reinforcing phase have been used: graphite, diamond, carbon fibres, carbon nanotubes, fullerene, graphene and graphene oxide.
Journal ArticleDOI
Study on the Reinforcement Effect of Different Graphene-Aluminum Matrix Composites Prepared by High-Energy Ball Milling
TL;DR: In this paper , the enhancement effect of reduced graphene oxide, multilayer graphene, and graphene oxide (GO) was analyzed by SEM, TEM, XRD, XPS, and FT-IR spectroscopy.
Journal ArticleDOI
Synthesis of graphene oxide coated metal powders with improved flowability and reduced reflectance
TL;DR: In this article , a method has been developed to coat metal powder particles (Fe, 316L stainless steel and Cu) with graphene oxide (GO) using a pH window where opposite zeta potentials cause the GO sheets to be attracted to the passive oxide layer of the metal powder surface and a rotary evaporator mixing to achieve good dispersion and control the concentration of GO.
References
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Journal ArticleDOI
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Andrea C. Ferrari,John Robertson +1 more
TL;DR: In this paper, a model and theoretical understanding of the Raman spectra in disordered and amorphous carbon is given, and the nature of the G and D vibration modes in graphite is analyzed in terms of the resonant excitation of \ensuremath{\pi} states and the long-range polarizability of the long range bonding.
Book
Mechanical Alloying And Milling
TL;DR: Mechanical Alloying (MA) is a solid-state powder processng technique involving repeated welding, fracturing, and rewelding of powder particles in a high-energy ball mill as mentioned in this paper.
Journal ArticleDOI
Spatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene
D. Graf,F. Molitor,Klaus Ensslin,Christoph Stampfer,A. Jungen,Christofer Hierold,Ludger Wirtz +6 more
TL;DR: In this article, the authors used a scanning confocal approach to collect spectral data with spatial resolution, which allows them to directly compare Raman images with scanning force micrographs.
Journal ArticleDOI
Uniaxial strain in graphene by Raman spectroscopy: G peak splitting, Grüneisen parameters, and sample orientation
T. M. G. Mohiuddin,Antonio Lombardo,Rahul R. Nair,A. Bonetti,Giorgio Savini,Rashid Jalil,Nicola Bonini,Denis M. Basko,Costas Galiotis,Nicola Marzari,Kostya S. Novoselov,Andre K. Geim,Andrea C. Ferrari +12 more
TL;DR: In this paper, the constitutive relation of graphene and probe the physics of its optical phonons by studying its Raman spectrum as a function of uniaxial strain was uncovered.
Journal ArticleDOI
Measurements of near-ultimate strength for multiwalled carbon nanotubes and irradiation-induced crosslinking improvements.
Bei Peng,Mark A Locascio,Peter Zapol,Shuyou Li,Steven L. Mielke,George C. Schatz,Horacio D. Espinosa +6 more
TL;DR: Multiwalled carbon nanotubes with a mean fracture strength >100 GPa are reported, which exceeds earlier observations by a factor of approximately three and are in excellent agreement with quantum-mechanical estimates for nanot tubes containing only an occasional vacancy defect, and are approximately 80% of the values expected for defect-free tubes.