Journal ArticleDOI
Effect of ball milling on graphene reinforced Al6061 composite fabricated by semi-solid sintering
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TLDR
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
Graphene Functionalized PLA Nanocomposites and Their Biomedical Applications
Ifrah Kiran,Naveed Akhtar Shad,M. Munir Sajid,Yasir Jamil,Yasir Javed,M. Irfan Hussain,Kanwal Akhtar +6 more
TL;DR: In this paper, a brief discussion is made on PLA and graphene, then synthesis methods for graphene composites and their functionalization on the graphene surface are discussed, biomedical applications of Graphene functionalized PLA nanocomposites have been discussed.
Journal ArticleDOI
Mechanical properties evaluation of hot extruded AA 2024 –Graphene Nanocomposites
TL;DR: In this paper, a Graphene particle reinforced aluminum alloy based composites are synthesized using powder metallurgy (PM) and hot extrusion approach to achieve high strength, compressible property, tensile strength, and tribological properties.
Journal ArticleDOI
Effect of post annealing on the microstructure, mechanical properties, and failure of MoxW1-xSi2 heaters produced by self-propagating high-temperature synthesis
Myung-Yeon Cho,Sung-Chul Lee,Chulhwan Park,Daeseok Lee,Sang-Mo Koo,Kyoung-Sook Moon,Dongwon Lee,Jong-Min Oh +7 more
TL;DR: In this article, high performance tungsten molybdenum disilicide (MoxW1-xSi2) heating elements were prepared using a self-propagating high temperature synthesis process.
Journal ArticleDOI
Synergistic effect of graphene/boron nitride binary nanoparticles on aluminum hybrid composite properties
Mahmut Can Şenel,Mevlüt Gürbüz +1 more
TL;DR: In this paper, hexagonal boron nitride nanoparticulates (BN: 05, 1, 15, 2 wt%), and graphene nanoplatelets (GNPs: 015, 030, 045 wt%) reinforced hybrid aluminum matrix composites were produced via the powder metallurgy (PM) process In this process, mixing, dispersing, drying, filtering, compaction, and heat treatment were applied The microstructure, Vickers hardness, density, compressive strength, and phase analysis of Al-BN, AlBN-graphene compos
Dissertation
Multi-Layer-Graphene-nanoclay-epoxy nanocomposites : theory and experimentation
TL;DR: In this article, the influence of reinforcement morphology on the mechanical properties of epoxy nanocomposites was studied using two nano-fillers: Multi-Layer Graphene (MLG) and nanoclay.
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.