期刊
INTERNATIONAL JOURNAL OF THERMOPHYSICS
卷 34, 期 7, 页码 1336-1346出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10765-013-1490-3
关键词
Electrical resistivity; Mg alloys; Smith-Palmer equation; Thermal conductivity
资金
- National Natural Science Foundation of China (NFSC) [50725413]
- Ministry of Science & Technology of China [2011BAE22B04]
- Chongqing Science and Technology Commission [CSTC2013JCYJC60001]
In this work, the electrical resistivity and thermal conductivity of both as-solution binary Mg-Al and Mg-Zn alloys were investigated from 298 K to 448 K, and the correlation between the corresponding electrical conductivity and thermal conductivity of the alloys was analyzed. The electrical resistivity of the Mg-Al and Mg-Zn alloys increased linearly with composition at 298 K, 348 K, 398 K, and 448 K, while the thermal conductivity of the alloys exponentially decreased with composition. Moreover, the electrical resistivity and thermal conductivity for both Mg-Al and Mg-Zn alloys varied linearly with temperature. On the basis of the Smith-Palmer equation, the thermal conductivity of both binary Mg alloys was found to be correlated quite well with the electrical conductivity in the temperature range from 298 K to 448 K. The corresponding Lorenz number is equal to , and the lattice thermal conductivity is equal to . The possible mechanisms are also discussed.
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