Extensity of C3S EBSD Database and Its Structure Calculation

Crystal morphology, crystal structure and atomic coordinates of tricalcium silicate (C₃S, 3CaO · SiO₂) which is the main components of cement clinker were studied. Through Xray powder diffraction analysis and associated calculation, we gained the C₃S precision cell parameters and atomic coordinates, then built three-dimensional models of C₃S crystal structure. A C₃S crystal electron backscatter scattering diffraction (EBSD) precise crystallographic database is established by EBSD test, [1] and it lays the foundation of study C₃S from orientation angles [2-3], we standardized electron backscatter diffraction pattern (EBSP) of C₃S crystal and took its EBSD phase identification test too by the database and its conclusions tally with that of X-ray powder diffraction test and calculation quite well.