HEAT CAPACITY OF A LIQUID INDIUM-TIN ALLOY
Abstract
The heat capacity of a liquid In-Sn alloy containing 47.22 at.-% Sn was measured from 394 to 758 K as a function of temperature in an isothermal calorimeter. The decrease in measured Cp values became smaller with increasing temperature resembling the behavior shown by pure liquid metals. The magnitude of the decrease in Cp above the eutectic temperature of the alloy was greater than those previously found for the pure liquid components. Above the melting temperature of Sn, the alloy Cp data are compared with values calculated from Kopp's Law using previously reported pure-liquid component data. Within the over-all accuracy of the data, delta Cp = 0 for the formation of the liquid alloy from the liquid elements at temperatures where it can be evaluated. These results indicated that the liquid alloy approaches closely the properties of an ideal solution and suggest the absence of strong unlike atom interactions. Assuming delta Cp = 0 for the liquid alloy at temperatures below the mp of Sn, Cp values for both supercooled liquid In and Sn were calculated. The Cp curves obtained join smoothly with those for the liquid metals above their melting temperatures. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1961
- Accession Number
- AD0264731
Entities
People
- Henri J. Giraud
- Ralph Hultgren
- Raymond L. Orr
Organizations
- Materials Research Laboratory