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 language | English |
|---|---|
| Pages (from-to) | 253-262 |
| Number of pages | 10 |
| Journal | High Temperature Material Processes |
| Volume | 9 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2005 |
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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 journal › Article
}
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
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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 -