Thermal Flow Characteristics of the Triple Plasma Torch System for Nanoparticle Synthesis

Triple dc plasma torch system was used for the synthesis of nanoparticles. Three thermal plasma jets are ejected from each plasma torch and they are merged into a strong single plasma plume. Since the feedstock is injected into the jet merging area, this system is suitable for refractory nanoparticl...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2019-07, Vol.47 (7), p.3366-3373
Main Authors: Kim, Tae-Hee, Lee, Yong Hee, Kim, Minseok, Oh, Jeong-Hwan, Choi, Sooseok
Format: Article
Language:English
Subjects:
Carrier gases
Computer simulation
Condensates
Evaporation
Flow characteristics
Inductors
Nanoparticles
Nitrogen plasma
Numerical simulation
Plasma
plasma applications
Plasma jets
plasma materials processing
plasma simulation
Plasma temperature
Stability
Synthesis
Thermal environments
Thermal plasmas
Tungsten
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Summary:Triple dc plasma torch system was used for the synthesis of nanoparticles. Three thermal plasma jets are ejected from each plasma torch and they are merged into a strong single plasma plume. Since the feedstock is injected into the jet merging area, this system is suitable for refractory nanoparticle synthesis and enable to high production yield caused by the complete evaporation is possible. In this paper, numerical simulation was carried out to analyze thermal plasma characteristic inside a reactor according to the plasma-forming gas and carrier gas compositions: Ar, Ar-H 2 , and Ar-N 2 plasma; Ar, He, and N 2 carrier gas. Then, it was comparatively interpreted with the actually synthesized nanoparticle in order to understand the condensation process of nanoparticles. It was revealed that the thermal environment is able to control readily in the triple torch system by the operating condition depending on the target materials.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2019.2920524