Abstract
The data produced shed new light on particle formation under fast Joule heating: the particle size depends on the initial size of the crystallites of a metal. The size of crystallites has been determined by the x-ray diffraction method as the size of the region of coherent scattering d(RCS). Median-surface particle sizes d(S) of the powder have been evaluated from the specific surface area S (BET). Such different metals as Al, In, Cu, Ti have been investigated. For the given metals, d(RCS) varies from 25 to 77 nm, d(S) of the powder varies from 45 to 200 nm, and d(S) is the smaller, the smaller is d(RCS). On this evidence, from the beginning of heating, the power of Joule dissipation is higher at the boundaries of crystallites. As a result, even at the energy introduced in the wire equal to the sublimation energy, 'a gas of drops' is formed instead of 'a gas of atoms'.
| Original language | English |
|---|---|
| Article number | 145710 |
| Journal | Nanotechnology |
| Volume | 19 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 9 Apr 2008 |
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ASJC Scopus subject areas
- Materials Science(all)
- Bioengineering
- Chemistry(all)
- Electrical and Electronic Engineering
- Mechanical Engineering
- Mechanics of Materials
Cite this
Particles and crystallites under electrical explosion of wires. / Sedoi, V. S.; Ivanov, Yu F.
In: Nanotechnology, Vol. 19, No. 14, 145710, 09.04.2008.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Particles and crystallites under electrical explosion of wires
AU - Sedoi, V. S.
AU - Ivanov, Yu F.
PY - 2008/4/9
Y1 - 2008/4/9
N2 - The data produced shed new light on particle formation under fast Joule heating: the particle size depends on the initial size of the crystallites of a metal. The size of crystallites has been determined by the x-ray diffraction method as the size of the region of coherent scattering d(RCS). Median-surface particle sizes d(S) of the powder have been evaluated from the specific surface area S (BET). Such different metals as Al, In, Cu, Ti have been investigated. For the given metals, d(RCS) varies from 25 to 77 nm, d(S) of the powder varies from 45 to 200 nm, and d(S) is the smaller, the smaller is d(RCS). On this evidence, from the beginning of heating, the power of Joule dissipation is higher at the boundaries of crystallites. As a result, even at the energy introduced in the wire equal to the sublimation energy, 'a gas of drops' is formed instead of 'a gas of atoms'.
AB - The data produced shed new light on particle formation under fast Joule heating: the particle size depends on the initial size of the crystallites of a metal. The size of crystallites has been determined by the x-ray diffraction method as the size of the region of coherent scattering d(RCS). Median-surface particle sizes d(S) of the powder have been evaluated from the specific surface area S (BET). Such different metals as Al, In, Cu, Ti have been investigated. For the given metals, d(RCS) varies from 25 to 77 nm, d(S) of the powder varies from 45 to 200 nm, and d(S) is the smaller, the smaller is d(RCS). On this evidence, from the beginning of heating, the power of Joule dissipation is higher at the boundaries of crystallites. As a result, even at the energy introduced in the wire equal to the sublimation energy, 'a gas of drops' is formed instead of 'a gas of atoms'.
UR - http://www.scopus.com/inward/record.url?scp=41049096038&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=41049096038&partnerID=8YFLogxK
U2 - 10.1088/0957-4484/19/14/145710
DO - 10.1088/0957-4484/19/14/145710
M3 - Article
VL - 19
JO - Nanotechnology
JF - Nanotechnology
SN - 0957-4484
IS - 14
M1 - 145710
ER -