Abstract
The behaviour of electrocontact heating is investigated in a Sn60-Pb40 alloy by using the modified impression technique and dc electric current in the range from 0 to 2.5 A at 298 K. The localized temperature increases with the increase in electric current, and the temperature rise on the surface at thermal equilibrium state is proportional to the square of the electric current. The increase in the temperature is consistent with the results from the finite element simulation, taking account of the effect of the oxide layer and thermal contact resistance on the contact surface. The simulation results show that the thickness of the oxide layer has a strong influence on the thermal equilibrium state of the electrocontact heating. Microstructural observation indicates that the current stressing has no effect on the evolution of microstructures under the experimental conditions.
| Original language | English |
|---|---|
| Article number | 065404 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 41 |
| Issue number | 6 |
| DOIs | |
| State | Published - Mar 21 2008 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films