Oxidation Study of Cerium Monosulfide
Cerium monosulfide is an attractive crucible material for most molten materials including actinide, lanthanide, alkali, and alkaline earth metals. It has a high melting point, low electrical resistivity, and low vapor pressure. Cerium monosulfide shows little, if any, interaction with nearly all metals except for platinum. The kinetics of thermal oxidation of Cerium monosulfide with molecular oxygen was studied in the temperature range of 300°C – 600°C using thermogravimetric analysis and differential scanning calorimetry (TGA-DSC), scanning electron microscopy, energy dispersive spectroscopy, and x-ray diffraction. Isothermal and non-isothermal TGA experiments suggest a complex gas-solid reaction mechanism with highly energetic intermediate reactions.