Accession Number : AD0697550

Title :   THE THERMODYNAMIC PROPERTIES OF POTASSIUM-ANTIMONY COMPOUNDS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Voronin,G. F. ; Nguen,Tkhak Shiu ; Mukhamedzhanova,N. M. ; Gerasimov,Ya. I.

Report Date : 17 MAR 1969

Pagination or Media Count : 11

Abstract : The vapor pressure of potassium over solid melts of potassium in antimony was measured depending on concentration and temperature, and the thermodynamic functions of four intermetallic compounds were calculated (K3Sb, K5Sb4, KSb, KSb2). Measurements were made with the help of a surface ionization detector. Five phase regions were observed and equations were calculated for the saturated vapor pressure of potassium in each of these regions. The heat of vaporization for potassium at 400 degress K was calculated -- 20.9 plus or minus 0.1 kcal/gm times atom. Thermodynamic potentials and heats of formation were calculated.

Descriptors :   (*POTASSIUM COMPOUNDS, *THERMODYNAMICS), (*ANTIMONY ALLOYS, THERMODYNAMICS), (*POTASSIUM, VAPOR PRESSURE), INTERMETALLIC COMPOUNDS, PHASE STUDIES, HEAT OF VAPORIZATION, HEAT OF FORMATION, POTASSIUM ALLOYS, ANTIMONY ALLOYS

Subject Categories : Physical Chemistry
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE