Melting vs solidification of a pure metal analyzed by DSC
Book
·
OSTI ID:323436
- Univ. de Barcelona (Spain)
- Univ. Autonoma de Barcelona, Bellaterra (Spain). Dept. de Fisica
The aim of the present paper is to analyze the melting/solidification of pure metals resulting from non-equilibrium conditions. Attention is focused on the direct measurement of the calorimetric signal obtained under isothermal hold of the sample at a temperature close to the equilibrium melting temperature T{sub m}, which results in both melting of an overheated solid and solidification of an undercooled melt. The non-equilibrium transformations are monitored by DSC under isothermal regime, with previous continuous heating/continuous cooling of the sample. The dependence of the calorimetric signal on thermodynamic factors, {Delta}H and {Delta}G, is explored. Here {Delta}H and {Delta}G are, respectively, the melting enthalpy and Gibbs free energy difference between the crystal and the liquid. IN particular, the results of the investigation performed on the melting/solidification behavior of pure In and Pb are presented.
- OSTI ID:
- 323436
- Report Number(s):
- CONF-971201--
- Country of Publication:
- United States
- Language:
- English
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