Accession Number : AD0606470

Title :   MEASUREMENT OF THERMODYNAMIC PROPERTIES OF COMPOUNDS OF ELEMENTS IN GROUPS II, IV V AND VI.

Descriptive Note : Final rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s) : Bever,Michael B. ; Howlett,Brian W. ; Misra,Somnath ; Robinsson,Peter M. ; Beardmore,Peter

Report Date : 14 JUL 1964

Pagination or Media Count : 44

Abstract : The research was concerned with the measurement and interpretation of thermodynamic properties of certain compounds and solid solutions. The following measurements were made. Heat of formation: Sb2Se3, Sb2Te3, Bi2Se3, Bi2Te3, Mg2Ge, Mg2Sn, Mg2Pb, In2Te, InTe, In2Te3, In2Te5; solid solutions in the systems Bi2Te3Bi2Se3, Sb2Te3-Bi2Te3, and Sb-Bi. Energies of orderdisorder: certain compositions in the systems Bi2Te3Bi2Se3 and Sb2Te3-Bi2Te3. Heats of solution: Mg, Ge and Pb in Sn; Sb, Se, and Te in Bi. Heats of fusion and melting points: Sb2Te3, Bi2Te3, Mg2Sn, Mg2Pb, InTe, In2Te3. Heat capacities near the melting points: Sb2Te3, Bi2Te3. The thermodynamic properties were interpreted in relation to the bonding of the compounds and the solid solutions and to the nature of the relevant phase transitions. (Author)

Descriptors :   (*INTERMETALLIC COMPOUNDS, THERMODYNAMICS), (*SOLID SOLUTIONS, THERMODYNAMICS), HEAT OF FORMATION, CRYSTAL SUBSTRUCTURE, HEAT OF SOLUTION, HEAT OF FUSION, MELTING, SPECIFIC HEAT, ANTIMONY COMPOUNDS, BISMUTH COMPOUNDS, MAGNESIUM COMPOUNDS, INDIUM COMPOUNDS, SELENIDES, TELLURIDES, GERMANIUM ALLOYS, TIN ALLOYS, LEAD ALLOYS, THERMOCHEMISTRY, CHEMICAL BONDS, PHASE STUDIES, X RAY DIFFRACTION, HARDNESS

Distribution Statement : APPROVED FOR PUBLIC RELEASE