Abstract
Over the last years, photoacoustic spectroscopy (PA) has become a powerful technique to characterize materials. In this paper, the well-known photoacoustic effect (PE) is presented as an effective non destructive method to estimate thermal properties of aluminum nanosized powders prepared with a transient plasma process by wire electrical explosion (WEE). Aluminum nanopowders are very attractive to be used as constituents of energetic materials. Thermal properties, such as thermal conductivity, are important for the study of ignition behavior of aluminum nanopowders. For this work, graphite bars were used as reference material. The experiments showed that nanosized aluminum revealed the same behavior as that of graphite at photoacoustic measurements (similar values of the signal amplitude at various frequencies). It allowed us to assume that both materials have the same thermal diffusivity length.
| Original language | English |
|---|---|
| Pages (from-to) | 601-609 |
| Number of pages | 9 |
| Journal | High Temperature Material Processes |
| Volume | 11 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2007 |
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Keywords
- Nanosized powders
- Photoacoustic spectroscopy
- Thermal conductivity
- Wire electrical explosion
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Photoacoustic determination of thermal conductivity of aluminum nanopowders. / An, Vladimir; De Izarra, Charles.
In: High Temperature Material Processes, Vol. 11, No. 4, 2007, p. 601-609.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Photoacoustic determination of thermal conductivity of aluminum nanopowders
AU - An, Vladimir
AU - De Izarra, Charles
PY - 2007
Y1 - 2007
N2 - Over the last years, photoacoustic spectroscopy (PA) has become a powerful technique to characterize materials. In this paper, the well-known photoacoustic effect (PE) is presented as an effective non destructive method to estimate thermal properties of aluminum nanosized powders prepared with a transient plasma process by wire electrical explosion (WEE). Aluminum nanopowders are very attractive to be used as constituents of energetic materials. Thermal properties, such as thermal conductivity, are important for the study of ignition behavior of aluminum nanopowders. For this work, graphite bars were used as reference material. The experiments showed that nanosized aluminum revealed the same behavior as that of graphite at photoacoustic measurements (similar values of the signal amplitude at various frequencies). It allowed us to assume that both materials have the same thermal diffusivity length.
AB - Over the last years, photoacoustic spectroscopy (PA) has become a powerful technique to characterize materials. In this paper, the well-known photoacoustic effect (PE) is presented as an effective non destructive method to estimate thermal properties of aluminum nanosized powders prepared with a transient plasma process by wire electrical explosion (WEE). Aluminum nanopowders are very attractive to be used as constituents of energetic materials. Thermal properties, such as thermal conductivity, are important for the study of ignition behavior of aluminum nanopowders. For this work, graphite bars were used as reference material. The experiments showed that nanosized aluminum revealed the same behavior as that of graphite at photoacoustic measurements (similar values of the signal amplitude at various frequencies). It allowed us to assume that both materials have the same thermal diffusivity length.
KW - Nanosized powders
KW - Photoacoustic spectroscopy
KW - Thermal conductivity
KW - Wire electrical explosion
UR - http://www.scopus.com/inward/record.url?scp=38149131773&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38149131773&partnerID=8YFLogxK
U2 - 10.1615/HighTempMatProc.v11.i4.120
DO - 10.1615/HighTempMatProc.v11.i4.120
M3 - Article
VL - 11
SP - 601
EP - 609
JO - High Temperature Materials and Processes
JF - High Temperature Materials and Processes
SN - 1093-3611
IS - 4
ER -