Hideo Tai1 and Shigenori Hori1
1Department of Metallurgy, Faculty of Engineering, University of Osaka, Suita
Equilibrium phase diagrams for the CdTe-Sb and CdTe-Bi systems have been determined by means of differential thermal analysis, X-ray diffraction and microscopic examination. The results are as follows:
(1) CdTe-Sb system: This system can be considered as a pseudobinary system from the result of X-ray experiment. There is no intermediate phase except CdTe and Sb phases in any composition. Mutual solid solubility of CdTe and Sb could not be detected by X-ray analysis. The monotectic temperature lies at 1049.5°C and the region of the liquid immissibility at this temperature is given as the composition of 18 ± 2 ∼ 58 ± 2 mol%Sb. The eutectic point lies at 98.8 mol%Sb and 623°C.
(2) CdTe-Bi system: This system can also be considered as a pseudo-binary system from the result of X-ray experiment. Mutual solid solubility of CdTe and Bi could not be detected and there is no intermediate phase in this system. The existence of the monotectic reaction in this system is estimated and the monotectic temperature and the region of the liquid immissibility at this temperature are 1061°C and 10 ± 2 ∼ 39 ± 5 mol%Bi respectively. The eutectic point lies at 99.992 mol%Bi and 270.5°C.
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