Open AccessCombustion Characteristics in Growth Chamber for Verneuilgrown Rutile Crystal
Author(s) -
Xudong Li,
Lei Wang,
Huiyun Yan,
Xiaojun Bi,
Xudong Sun
Publication year - 2020
Publication title -
research and application of materials science
Language(s) - English
Resource type - Journals
eISSN - 2661-4456
pISSN - 2661-4464
DOI - 10.33142/msra.v2i1.2024
Subject(s) - nozzle , materials science , rutile , combustor , hydrogen , oxygen , combustion , volumetric flow rate , combustion chamber , limiting oxygen concentration , analytical chemistry (journal) , metallurgy , chemistry , thermodynamics , chromatography , physics , organic chemistry
Combustion characteristics of three-tube burner in growth chamber for preparation of single crystal by the Verneuil method were investigated, and the effects of nozzle structure and flow rate on the surface temperature of molten cap were analyzed. The results showed that hydrogen flowed out from the nozzle diffused with inner and outer oxygen, and two flame produced in the center and near the wall of growth chamber. The surface temperature of molten cap were gradually reduced from the center outward. The temperature of molten cap decreased gradually with increasing the nozzle aperture of inner oxygen, and varied slightly with the diameter of hydrogen and outer oxygen nozzle. The temperature of molten cap decreased gradually with increasing the flow rate of inner and outer oxygen, while increased with the flow rate of hydrogen.