Abstract
Thermal conductivities of Ni-Cr solid solution alloys have been measured to develop a prediction equation for thermal conductivities as functions of temperature and chemical composition. Samples used were Ni-x at% Cr (0 ≤ x ≤ 22) and commercial alloys of Nichrome Nos. 1 and 2. Thermal conductivity measurements were carried out using the transient hot-strip method over a temperature range from 293 K to 1273 K. The thermal conductivities of the alloys increased with increasing temperature and decreased with increasing Cr concentration at constant temperature. The Smith-Palmer equation has been examined to relate the thermal conductivities of the alloys to the electrical resistivities. The thermal conductivity and electrical-resistivity data, respectively, in the present work and in the literature have confirmed that the Smith-Palmer equation applies to Ni-Cr solid solutions and Nichrome alloys. On the basis of this equation, the thermal conductivity of Ni-Cr solid solution alloys has been expressed as a function of temperature and chemical composition. This analysis has also been applied to Ni-Fe and Cu-Ni solid solution alloys.
Original language | English |
---|---|
Pages (from-to) | 1991-2003 |
Number of pages | 13 |
Journal | International Journal of Thermophysics |
Volume | 31 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2010 Oct |
Externally published | Yes |
Keywords
- Hot-strip method
- Ni-Cr
- Solid solution alloy
- Thermal conductivity
ASJC Scopus subject areas
- Condensed Matter Physics