Thermodynamic studies of gallium--indium liquid alloys by solid state electrochemistry with oxide electrolytes

Journal Article · Thu Jul 01 04:00:00 EDT 1976 · J. Chem. Eng. Data; (United States)

DOI:https://doi.org/10.1021/je60070a016· OSTI ID:7156900

Pong, R; Donaghey, L F

The activity of gallium in Ga--In liquid alloys was studied in a high temperature galvanic cell using calcia stabilized zirconia as an oxide electrolyte. The measured activity data for gallium in the Ga-In melts were used to calculate the interaction coefficient in the liquid alloy, which has the form ..cap alpha../sub GaIn/ = In ..gamma../sub Ga//(1 --x/sub Ga/)/sup 2/ = 0.2862 + 0.0352 x/sub Ga/ + (398.3 + 220.0x/sub Ga/)T/sup -1/. The derived expressions for the enthalpy and excess entropy of mixing were found to be given by ..delta..H/sup M/ = (791.4 + 218.6 x/sub Ga/(1 -- x/sub Ga/) and ..delta..S/sup xs/ = --(0.568 -- 0.0350x/sub Ga/) x/sub Ga/(1 -- G/sub a/). The enthalpy of mixing reaches a maximum of 226 cal/mol at a gallium mole fraction of 0.53 at x/sub Ga/. Results are compared to thermodynamic data obtained by other methods. Experimental techniques and limitations are critically reviewed.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 7156900
• Journal Information: J. Chem. Eng. Data; (United States), Journal Name: J. Chem. Eng. Data; (United States) Vol. 21:3; ISSN JCEAA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALLOYS
ELECTROLYTIC CELLS
ELEMENTS
ENTHALPY
ENTROPY
FLUIDS
GALLIUM ALLOYS
INDIUM ALLOYS
LIQUID METALS
LIQUIDS
METALS
MIXING HEAT
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES