The formation mechanism and thermal stability of CaCrO<sub>4</sub>
Yingjiang Wu, Shengqiang Song, Yongbin Xv, Zhengliang Xue
Abstract
Abstract The Cr(VI)-containing phase CaCrO 4 is a typical hexavalent chromium compounds, a huge harm to human and environment. Therefore it is very important to investigate formation mechanism and thermal stability. This paper studies the effect of temperature and atmosphere on the CaCrO 4 form, and high temperature stability is studied using XRD and TG-DSC. And CaCrO 4 just forms in air atmosphere below 1000 °C. When pure CaCrO 4 is heat to 1100 °C, it decomposes to CaCr 2 O 4 .
Topics & Concepts
Atmosphere (unit)Thermal stabilityChromiumMaterials scienceThermalThermodynamicsPhase (matter)Hexavalent chromiumChemical engineeringChemistryMineralogyMetallurgyPhysicsOrganic chemistryEngineeringPigment Synthesis and PropertiesMetallurgical Processes and ThermodynamicsIron and Steelmaking Processes