Results 261 to 270 of about 315,372 (339)

Heat-Initiated Oxidation of an Aluminum Nanoparticle

MRS Proceedings, 2012
ABSTRACTMultimillion-atom reactive molecular dynamics simulations were used to investigate the mechanisms which control heat-initiated oxidation in aluminum nanoparticles. The simulation results reveal three stages: (1) confined burning, (2) onset of deformation, and (3) onset of small cluster ejections.
Richard Clark, Weiqiang Wang, Ken-ichi Nomura, Rajiv K. Kalia, Aiichiro Nakano, Priya Vashishta   +5 more
openaire   +1 more source

TiB2 nanoparticles-regulated oxidation behavior in aluminum alloy 7075

Corrosion Science, 2021
Abstract In this paper, we studied the oxidation behavior in AA7075 containing TiB2 nanoparticles. The results indicate that TiB2 nanoparticles play distinctive roles during the coupled oxidation processes. At a lower temperature, TiB2 ruptures the Al2O3 film and refine the microstructure and morphology.
Shuaihang Pan, Tianqi Zheng, Jie Yuan, Kaiyuan Jin, Xiaochun Li   +4 more
openaire   +1 more source

Synthesizing aluminum nanoparticles in an oxide shell

Nanotechnologies in Russia, 2009
It is shown that a protective oxide shell can be formed on the surface of aluminum nanoparticles by the controlled addition of oxygen to the working inert gas of the installation while powders are being synthesized by the method of electrical explosion of wire.
Yu. A. Kotov, I. V. Beketov, A. I. Medvedev, O. R. Timoshenkova   +3 more
openaire   +1 more source

Collective oxidation behavior of aluminum nanoparticle aggregate

Applied Physics Letters, 2013
Aggregates of aluminum nanoparticles are good solid fuel due to high flame propagation rates. Multi-million atom molecular dynamics simulations reveal the mechanism underlying higher reaction rate in a chain of aluminum nanoparticles as compared to an isolated nanoparticle.
Adarsh Shekhar, Weiqiang Wang, Richard Clark, Rajiv K. Kalia, Aiichiro Nakano, Priya Vashishta   +5 more
openaire   +1 more source

Electronic Structure of Core–Shell Metal/Oxide Aluminum Nanoparticles

The Journal of Physical Chemistry C, 2015
We report a combined X-ray photoelectron spectroscopy and atomic force microscopy study of ultrafine (
Maidecchi G, Duc CV, Buzio R, Gerbi A, Gemme G, Canepa M, Bisio F   +6 more
openaire   +3 more sources

Molecular Dynamics Simulations of the Oxidation of Aluminum Nanoparticles

The Journal of Physical Chemistry B, 2004
The oxidation of aluminum nanoparticles is studied with classical molecular dynamics and the Streitz-Mintmire (Streitz, F. H.; Mintmire, J. W. Phys. Rev. B 1994, 50, 11996) electrostatic plus (ES+) potential that allows for the variation of electrostatic charge on all atoms in the simulation.
Alavi, Saman, Mintmire, J., Thompson, D.
openaire   +3 more sources

Importance of Phase Change of Aluminum in Oxidation of Aluminum Nanoparticles

The Journal of Physical Chemistry B, 2004
Aluminum nanoparticles have increasingly gained attention because of their potential incorporation in explosive and propellant mixtures. This letter reports on a qualitative study on the oxidation of aluminum nanoparticles containing a passivating oxide coating.
Ashish Rai, Donggeun Lee, Kihong Park, Michael R. Zachariah   +3 more
openaire   +1 more source

Oxidation Dynamics of a Chain of Aluminum Nanoparticles

MRS Proceedings, 2013
ABSTRACTMultimillion-atom molecular dynamics simulations are used to investigate burning behavior of a chain of three alumina-coated aluminum nanoparticles (ANPs), where particles one and three are heated above the melting temperature of pure aluminum.
Adarsh Shekhar, Weiqiang Wang, Richard Clark, Rajiv K. Kalia, Aiichiro Nakano, Priya Vashishta   +5 more
openaire   +1 more source

Immiscibility of Nucleating Aluminum Oxide Nanoparticles in Vapor

The Journal of Physical Chemistry C, 2018
Multistep pathways in nucleation are now known to be ubiquitous and thus crucial to understand crystal formation processes. In a supersaturated mother phase, many types of source molecules are coagulated to form an amorphous or liquid-like intermediate, which subsequently transforms to a crystal.
Shinnosuke Ishizuka, Yuki Kimura, Jun Kawano, Rafael Escribano, Tomoya Yamazaki, Tetsuya Hama, Rikako Sato   +6 more
openaire   +1 more source

Slip velocity and temperature jump of a non-Newtonian nanofluid, aqueous solution of carboxy-methyl cellulose/aluminum oxide nanoparticles, through a microtube

International journal of numerical methods for heat & fluid flow, 2019
Purpose With respect to two new subjects, i.e. nanofluids and microchannels, in heat transfer systems and modern techniques used for building them, this paper aims to study on effect of using aluminum oxide nanoparticles in non-Newtonian fluid of ...
M. Goodarzi, S. Javid, Ali Sajadifar, Mehdi Nojoomizadeh, Seyed Hossein Motaharipour, Q. Bach, A. Karimipour   +6 more
semanticscholar   +1 more source