抄録
The thermodynamic properties of Ag–In and Ag–Ga binary alloy systems were studied by Knudsen cell-mass spectrometric technique in the temperature range of 1100–1400 K. The activities of both components in the Ag–In system show negative deviations from the Raoult’s law. In the Ag–Ga system the activity of silver shows negative deviations from the ideal behavior while that of gallium shows negative deviations in the low concentration range and small positive deviations when XGa>0.65. The activities of the two systems are slightly temperature dependent and the activity coefficients at infinitely dilute concentration are expressed as follows:
(logγIn°)in Ag=0.514−1790T−1
(logγGa°)in Ag=−0.124−1450T−1
(logγAg°)in In=−0.237−345T−1
(logγGg°)in Ga=−0.394+220T−1.
