X-ray characterization of structural defects in electroexplosive nanopowders

Vladimir An, Alexander Ilyin, Charles De Izarra

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

X-ray structure investigations of nanosized aluminum and copper powders prepared with a transient plasma process by wire electrical explosion (WEE) have been carried out. To compare structural characteristics, powders produced by conventional routes have also been investigated. Calculations of lattice parameter values in different plane (hkl) directions were done using experimental data. Visible deviations of lattice parameter values for nanosized powders, in comparison with JCPDS references and powders prepared through conventional pathways, have been found out To determine the influence of the dimensional factor on microdeformations, all specimens were divided into sub-micronic and nanometric fractions by the sedimentation in cold absolute alcohol. According to X-ray structure analysis, the increase of lattice parameter is more considerable in the submicronic fraction of electroexplosive powder than that of nanometric fraction. The conclusion was made that severe conditions of electroexplosive powders fabrication, as well as different cooling rates of particles, can play an essential role in the deformation of their crystal lattice. In addition, we may conclude that the deformation of the crystal lattice corresponds to an energy excess stored in these nano-sized powders prepared with the wire electrical explosion technology.

Original languageEnglish
Pages (from-to)253-262
Number of pages10
JournalHigh Temperature Material Processes
Volume9
Issue number2
DOIs
Publication statusPublished - 2005

Fingerprint

Powders
X rays
Defects
defects
Lattice constants
x rays
lattice parameters
Crystal lattices
Explosions
crystal lattices
explosions
Wire
Copper powder
wire
Aluminum
Sedimentation
Alcohols
Ethanol
alcohols
Cooling

Keywords

  • Fee metals
  • Nano-sized powders
  • Structural defects
  • Wire electrical explosion

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

X-ray characterization of structural defects in electroexplosive nanopowders. / An, Vladimir; Ilyin, Alexander; De Izarra, Charles.

In: High Temperature Material Processes, Vol. 9, No. 2, 2005, p. 253-262.

Research output: Contribution to journalArticle

@article{e2834433f9db449ca17562e5dcfeba4b,
title = "X-ray characterization of structural defects in electroexplosive nanopowders",
abstract = "X-ray structure investigations of nanosized aluminum and copper powders prepared with a transient plasma process by wire electrical explosion (WEE) have been carried out. To compare structural characteristics, powders produced by conventional routes have also been investigated. Calculations of lattice parameter values in different plane (hkl) directions were done using experimental data. Visible deviations of lattice parameter values for nanosized powders, in comparison with JCPDS references and powders prepared through conventional pathways, have been found out To determine the influence of the dimensional factor on microdeformations, all specimens were divided into sub-micronic and nanometric fractions by the sedimentation in cold absolute alcohol. According to X-ray structure analysis, the increase of lattice parameter is more considerable in the submicronic fraction of electroexplosive powder than that of nanometric fraction. The conclusion was made that severe conditions of electroexplosive powders fabrication, as well as different cooling rates of particles, can play an essential role in the deformation of their crystal lattice. In addition, we may conclude that the deformation of the crystal lattice corresponds to an energy excess stored in these nano-sized powders prepared with the wire electrical explosion technology.",
keywords = "Fee metals, Nano-sized powders, Structural defects, Wire electrical explosion",
author = "Vladimir An and Alexander Ilyin and {De Izarra}, Charles",
year = "2005",
doi = "10.1615/HighTempMatProc.v9.i2.70",
language = "English",
volume = "9",
pages = "253--262",
journal = "High Temperature Materials and Processes",
issn = "1093-3611",
publisher = "Begell House Inc.",
number = "2",

}

TY - JOUR

T1 - X-ray characterization of structural defects in electroexplosive nanopowders

AU - An, Vladimir

AU - Ilyin, Alexander

AU - De Izarra, Charles

PY - 2005

Y1 - 2005

N2 - X-ray structure investigations of nanosized aluminum and copper powders prepared with a transient plasma process by wire electrical explosion (WEE) have been carried out. To compare structural characteristics, powders produced by conventional routes have also been investigated. Calculations of lattice parameter values in different plane (hkl) directions were done using experimental data. Visible deviations of lattice parameter values for nanosized powders, in comparison with JCPDS references and powders prepared through conventional pathways, have been found out To determine the influence of the dimensional factor on microdeformations, all specimens were divided into sub-micronic and nanometric fractions by the sedimentation in cold absolute alcohol. According to X-ray structure analysis, the increase of lattice parameter is more considerable in the submicronic fraction of electroexplosive powder than that of nanometric fraction. The conclusion was made that severe conditions of electroexplosive powders fabrication, as well as different cooling rates of particles, can play an essential role in the deformation of their crystal lattice. In addition, we may conclude that the deformation of the crystal lattice corresponds to an energy excess stored in these nano-sized powders prepared with the wire electrical explosion technology.

AB - X-ray structure investigations of nanosized aluminum and copper powders prepared with a transient plasma process by wire electrical explosion (WEE) have been carried out. To compare structural characteristics, powders produced by conventional routes have also been investigated. Calculations of lattice parameter values in different plane (hkl) directions were done using experimental data. Visible deviations of lattice parameter values for nanosized powders, in comparison with JCPDS references and powders prepared through conventional pathways, have been found out To determine the influence of the dimensional factor on microdeformations, all specimens were divided into sub-micronic and nanometric fractions by the sedimentation in cold absolute alcohol. According to X-ray structure analysis, the increase of lattice parameter is more considerable in the submicronic fraction of electroexplosive powder than that of nanometric fraction. The conclusion was made that severe conditions of electroexplosive powders fabrication, as well as different cooling rates of particles, can play an essential role in the deformation of their crystal lattice. In addition, we may conclude that the deformation of the crystal lattice corresponds to an energy excess stored in these nano-sized powders prepared with the wire electrical explosion technology.

KW - Fee metals

KW - Nano-sized powders

KW - Structural defects

KW - Wire electrical explosion

UR - http://www.scopus.com/inward/record.url?scp=24144457220&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24144457220&partnerID=8YFLogxK

U2 - 10.1615/HighTempMatProc.v9.i2.70

DO - 10.1615/HighTempMatProc.v9.i2.70

M3 - Article

VL - 9

SP - 253

EP - 262

JO - High Temperature Materials and Processes

JF - High Temperature Materials and Processes

SN - 1093-3611

IS - 2

ER -