Partial pressures over the pseudobinary solid solution Hg /SUB 1-x/ Cd /SUB x/ Te(s) for x=0. 70 and 0. 95 and over four Te-rich ternary melts

Journal Article · Mon Apr 01 00:00:00 EST 1985 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2113991· OSTI ID:5956349

Su, C M; Brebrick, R F; Liao, P K

The partial pressures of Hg, Cd, and Te/sub 2/ have been determined between 420/sup 0/ and 840/sup 0/C from optical absorption measurements for four Te-rich compositions and for the Te-saturated solid solution (Hg /SUB 1-x/ Cd /SUB x/ ) Te(s) with x = 0.70 and 0.95. In addition to further thermodynamically characterizing the melt, the former measurements yield ternary liquidus points. They also yield tie lines when combined with the present and previous measurements on Te-saturated solid solutions. These results, from an essentially steady-state technique, agree well with those of Harman. The measurementss on the solid solutions yield values for the mixing quantities which are more accurate than our previous values. These are described well in terms of a quasi-regular solution of HgTe and CdTe components with an enthalpy of mixing of 1074 cal/g-atom and an excess entropy of mixing of 0.893 cal/K-g-atom at 50 mole percent CdTe.

• Research Organization: Materials Science and Metallurgy Program, College of Engineering, Marquette University, Milwaukee, WI
• OSTI ID: 5956349
• Journal Information: J. Electrochem. Soc.; (United States), Vol. 132:4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM TELLURIDES
ABSORPTIVITY
ENTHALPY
ENTROPY
PARTIAL PRESSURE
MERCURY TELLURIDES
HIGH TEMPERATURE
MATERIALS TESTING
MEASURING METHODS
MERCURY COMPOUNDS
MIXING
PRESSURE MEASUREMENT
SOLID SOLUTIONS
THERMODYNAMICS
VERY HIGH TEMPERATURE
CADMIUM COMPOUNDS
CHALCOGENIDES
DISPERSIONS
MIXTURES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SOLUTIONS
TELLURIDES
TELLURIUM COMPOUNDS
TESTING
THERMODYNAMIC PROPERTIES
360603* - Materials- Properties