Open AccessEffect of Al Content on the Stability of MgF2 Powder in Air at High Temperatures
Author(s) -
Hukui Chen,
Jie Huang,
Hongli Jiang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/711/1/012096
Subject(s) - thermal stability , materials science , thermal , aluminium , content (measure theory) , analytical chemistry (journal) , nuclear chemistry , chemical engineering , chemistry , metallurgy , thermodynamics , organic chemistry , physics , engineering , mathematical analysis , mathematics
The effect of Al on the stability of MgF 2 powder at 600–1000 °C in air has been investigated by XRD, EDS and SEM. It is found that the thermal stability of MgF 2 is strongly influenced by both Al content and temperature. With the increase of Al content and temperature, MgF 2 was gradually oxidized to MgO, that is, the thermal stability of MgF 2 was gradually lowered. The reason that the addition of Al causes the thermal stability of MgF 2 to decrease may be related to the oxidation of Al and the formation of MgAl 2 O 4 at high temperatures.