The Phase Diagram of the BaO–TiO2 System

摘要: A method for accurately observing phase changes at high temperatures has been developed; it employs a microfurnace and uses samples of oxide mixtures weighing less than 1 mg. The were observed their measured with an optical pyrometer specially adapted this purpose calibrated the furnace radiation. An electrically heated resistance strip, in general molybdenum, allows melting crystallization any desired speed. placed directly on strip could be quenched by interruption current flow.The binary system, BaO–TiO2, was investigated. existence four compounds, BaTi4O9, BaTi2O5, BaTiO3, Ba2TiO4, demonstrated liquidus curves x‐ray diffraction. change BaTiO3 below solidus temperature observed; all 80 mole percent TiO2 showed intermediate about 1450°C.Single crystals grown from ternary melts ...