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| Content Provider | Springer Nature Link |
|---|---|
| Author | Hüpf, Thomas Cagran, Claus Kaschnitz, Erhard Pottlacher, Gert |
| Copyright Year | 2010 |
| Abstract | Thermophysical properties (e.g., specific enthalpy, heat of fusion, electrical resistivity, thermal volume expansion) are measured in the liquid phase up to very high temperatures by an extreme fast pulse-heating method. Heating rates of about 10$^{8}$ K · s$^{−1}$ are applied by self-heating of wire-shaped metallic specimens with a current of approximately 10,000 A. Pure elements seem to be still close to thermal equilibrium as the obtained results are in good agreement with those obtained by static methods. However, this situation might be different for alloys. The rapid volume heating can shift diffusion-controlled phase transitions at heating to higher temperatures or even make them not noticeable anymore. The simple binary Cu–Ni system was chosen to test the heating rate dependence; this system is well known and shows complete miscibility in the liquid and solid ranges of interest. This study is a further step to test the performance of the fast pulse-heating method being applied to simple and more complex alloys. Measured results of enthalpy, heat of fusion, heat capacity, and electrical resistivity in the vicinity of the melting range are presented. The results of enthalpy and heat capacity agree with simple mixing rules. The measured electrical resistivity of different compositions is compared to results obtained by electromagnetic levitation measurements. |
| Starting Page | 966 |
| Ending Page | 974 |
| Page Count | 9 |
| File Format | |
| ISSN | 0195928X |
| Journal | International Journal of Thermophysics |
| Volume Number | 31 |
| Issue Number | 4-5 |
| e-ISSN | 15729567 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2010-04-13 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Binary alloy Copper Electrical resistivity Heat capacity Liquid metals Nickel Physical Chemistry Mechanics Condensed Matter Physics Industrial Chemistry/Chemical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics |
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