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Calorimetric investigations of a gold-nickel alloy. I. Low temperature heat capacity of gold-nickel alloy

✍ Scribed by Warren Desorbo

Publisher
Elsevier Science
Year
1955
Weight
656 KB
Volume
3
Category
Article
ISSN
0001-6160

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✦ Synopsis

The heat capacity of gold-nickel alloy containing 52 atomic per cent gold has been measured in the temperature region 13' to 300Β°K. The lack of conformity of the data to the Kopp-Neumann rule has been shown. The excess entropy, arising mostly from the change in the vibrational spectrum upon alloy formation, is 0.62,tO.O9 Cal/g-atom/deg at 300Β°K. The data have been analyzed in terms of the simple Debye continuum model.

The values of the thermodynamic functions, entropy, enthalpy and free energy have been evaluated and tabulated at regular intervals of temperature up to 300Β°K for the Au-Ni alloy. The entropy of this material at 29&.16'K is 9.83f0.07

Cal/g-atom/deg, of which 0.10 was obtained by extrapolating below 13Β°K.

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