日本金属学会誌

J. Japan Inst. Metals, Vol. 52, No. 5 (1988),
pp. 460-464

Diagrams for the Glass-Forming Systems MO-TeO2(M: Pb, Cd)

Kunihiko Nakashima1, Tetsuya Miyazaki2, Takeshi Takaki3 and Kenji Morinaga1

1Graduate School of Engineering Science, Department of Materiales Science and Technology, Kyusyu University, Fukuoka
2Graduate Student, Kyusyu University\address{}. Present address: Central Research Laboratory, Mitsui Petro Chemical Industries Ltd., Chiba
3Graduate Student, Kyusyu Sangyo University, Fukuoka

Abstract:

Equilibrium state phase diagrams in the MO-TeO2(M: Pb, Cd) systems were determined by DTA analysis and X-ray diffraction. To understand various phenomena including the glassy state, crystallyzation and precipitation of metastable phases which occur in glass-forming systems, T.T.T. (Time-Temperature-Transformation) and C.C.T. (Continuous-Cooling-Transformation) curves containing a time axis were determined by the hot-thermocouple method. Moreover the cooling rate and composition diagrams were made on the basis of the C.C.T. curves.
These diagrams are preferable to understand the above-mentioned phenomena, and to design materials by rapid cooling in glass-forming systems.


(Received 1987/10/9)

Keywords:

glass-forming system, PbO-TeO2 system, CdO-TeO2 system, time-temperature-transformation diagram, continuous-cooling-transformation diagram, cooling rate-composition diagram


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