Vaporization of CdIn/sub 2/Se/sub 4/(s)

Journal Article · Wed Jul 01 04:00:00 EDT 1987 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2100764· OSTI ID:5896638

Srinivasa, R S; Thompson, H B; Edwards, J G

The vaporization behavior and vapor pressures over samples initially CdIn/sub 2/Se/sub 4/(s) were determined by simultaneous Knudsen effusion and torsion effusion methods. Isothermal thermogravimetry with the Knudsen balance and torsion pendulum as probes were conducted. CdIn/sub 2/Se/sub 4/(s) vaporized incongruently in the range 961-1100 K, and produced Cd(g), Se/sub 2/(g), and CdIn/sub 6/Se/sub 10/(s); the third law ..delta..H/sup 0/(298 K) was 232.4 +- 0.2 kJ/mol of CdIn/sub 2/Se/sub 4/. CdIn/sub 6/Se/sub 10/(s) vaporized incongruently in the above range and produced Cd(g), Se/sub 2/(g), and InSe/sub 3/(s); the third law ..delta..H/sup 0/(298 K) was 350.9 +- 0.2 kJ/mol of CdIn/sub 6/Se/sub 10/. Vaporization studies with the residual In/sub 2/Se/sub 3/(s) confirmed the conclusions from a recent study of In/sub 2/Se/sub 3/ in which it was shown that In/sub 2/Se/sub 3/(s) vaporizes incongruently. An anomalous isothermal increase in rate of mass loss during thermogravimetry was explained by a change in the nature of the effusing vapor.

• Research Organization: Dept. of Chemistry, The Univ. of Toledo, Toledo, OH 43606
• OSTI ID: 5896638
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 134:7; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CADMIUM COMPOUNDS
CADMIUM SELENIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
EVAPORATION
FLUID FLOW
GAS FLOW
GRAVIMETRIC ANALYSIS
HIGH TEMPERATURE
INDIUM COMPOUNDS
INDIUM SELENIDES
ISOTHERMS
KINETICS
KNUDSEN FLOW
MASS
PHASE TRANSFORMATIONS
PRESSURE EFFECTS
PROBES
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SELENIDES
SELENIUM COMPOUNDS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
VERY HIGH TEMPERATURE
YIELDS