Details
| Originalsprache | Englisch |
|---|---|
| Fachzeitschrift | Advanced engineering materials |
| Publikationsstatus | Angenommen/Im Druck - 2026 |
Abstract
One promising approach to keep the residual oxygen level in welding at extremely low levels is to add monosilane to the argon shielding gas. However, its effect on the plasma itself is not clear, and thus this study examines the influence of a silane-doped argon atmosphere on the chemical components and temperature within a nontransferring, thermal argon plasma in comparison to an atmosphere of pure argon and air. For this purpose, the emitted radiation of the plasma was analyzed using optical emission spectroscopy. The spectra show that the Ar I lines are most prominent in all atmospheres. Compared to the air atmosphere, the plasma in the argon atmosphere exhibits a stronger H I line and an OH emission band. A slight doping of the argon atmosphere with silane (0.01 vol.%) leads to strongly pronounced Si I and H I lines and a clearly recognizable H2 emission band. The high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule leads to an increase in plasma temperature from about 7,600 to 9,000 K.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: Advanced engineering materials, 2026.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
AU - Kreie, Lena
AU - Kramer, David
AU - Scheithauer, Thomas
AU - Maier, Hans Jürgen
AU - Hassel, Thomas
N1 - Publisher Copyright: © 2026 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH.
PY - 2026
Y1 - 2026
N2 - One promising approach to keep the residual oxygen level in welding at extremely low levels is to add monosilane to the argon shielding gas. However, its effect on the plasma itself is not clear, and thus this study examines the influence of a silane-doped argon atmosphere on the chemical components and temperature within a nontransferring, thermal argon plasma in comparison to an atmosphere of pure argon and air. For this purpose, the emitted radiation of the plasma was analyzed using optical emission spectroscopy. The spectra show that the Ar I lines are most prominent in all atmospheres. Compared to the air atmosphere, the plasma in the argon atmosphere exhibits a stronger H I line and an OH emission band. A slight doping of the argon atmosphere with silane (0.01 vol.%) leads to strongly pronounced Si I and H I lines and a clearly recognizable H2 emission band. The high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule leads to an increase in plasma temperature from about 7,600 to 9,000 K.
AB - One promising approach to keep the residual oxygen level in welding at extremely low levels is to add monosilane to the argon shielding gas. However, its effect on the plasma itself is not clear, and thus this study examines the influence of a silane-doped argon atmosphere on the chemical components and temperature within a nontransferring, thermal argon plasma in comparison to an atmosphere of pure argon and air. For this purpose, the emitted radiation of the plasma was analyzed using optical emission spectroscopy. The spectra show that the Ar I lines are most prominent in all atmospheres. Compared to the air atmosphere, the plasma in the argon atmosphere exhibits a stronger H I line and an OH emission band. A slight doping of the argon atmosphere with silane (0.01 vol.%) leads to strongly pronounced Si I and H I lines and a clearly recognizable H2 emission band. The high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule leads to an increase in plasma temperature from about 7,600 to 9,000 K.
KW - Boltzmann plot
KW - optical emission spectroscopy
KW - oxygen-free production
KW - plasma temperature
KW - thermal plasma
UR - http://www.scopus.com/inward/record.url?scp=105029342768&partnerID=8YFLogxK
U2 - 10.1002/adem.202502558
DO - 10.1002/adem.202502558
M3 - Article
AN - SCOPUS:105029342768
JO - Advanced engineering materials
JF - Advanced engineering materials
SN - 1438-1656
ER -