Open AccessNumerical Simulation Study on Flow and Heat Transfer of the Tungsten Crucible CVD Reactor
Author(s) -
Lipei Peng,
Han Dong,
Shaobo Li,
Zhanwei Wang,
Xiangjun Meng,
Yafeng Wang,
Tengshi Liu,
Xiangyu Li,
Jialiang Ji
Publication year - 2022
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.2c04037
Subject(s) - tungsten , crucible (geodemography) , susceptor , materials science , heat transfer , deposition (geology) , mechanics , chemical vapor deposition , thermal radiation , convection , computational fluid dynamics , temperature gradient , thermodynamics , chemistry , metallurgy , composite material , meteorology , layer (electronics) , geology , nanotechnology , physics , paleontology , computational chemistry , epitaxy , sediment
In order to investigate the optimization of the performance and structure of a tungsten crucible CVD reactor, the CFD simulation method was used in this paper to simulate the internal flow of the tungsten crucible CVD reactor. The velocity distribution and temperature distribution in the reactor were obtained. The simulation results show that the axial and radial heat convection will occur between the susceptor and the outer wall surface, but the axial heat convection is more intense. Moreover, it was found that the temperature distribution in the CVD reactor was more uniform and reasonable when the upper gas inlet was applied, which was beneficial to the reduction and deposition processes of tungsten. The molar ratio of H 2 to WF 6 has a great influence on the deposition rate of tungsten, and excess H 2 is not conducive to the deposition of tungsten. Thermal radiation has a great influence on the temperature distribution of CVD reactors. It cannot be neglected.