Kunihiko Nakashima1, Tetsuya Miyazaki2, Takeshi Takaki3 and Kenji Morinaga1
1Graduate School of Engineering Science, Department of Materiales Science and Technology, Kyusyu University, Fukuoka
Equilibrium state phase diagrams in the MO-TeO2(M: Ba, Sr) systems were determined by DTA analysis and X-ray diffraction. T.T.T. (Time-Temperature-Transformation) and C.C.T. (Continuous-Cooling-Transformation) curves including various phenomena which occur on cooling the melts in glass-forming systems were determined by the hot-thermocouple method. The cooling rate and composition diagrams were made on the basis of the C.C.T. curves.
Along with the development of the non-equilibrium and metastable materials, these diagrams are important as basic diagrams to develop new glassy materials by rapid cooling.
glass-forming system, Ba-TeO2 system, SrO-TeO2 system, time-temperature transformation diagram, continuous-cooling-transformation diagram, cooling rate-composition diagram
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