Thermal conductivity in Pt-based alloys

Yoshihiro Terada, Kenji Ohkubo, Tetsuo Mohri, Tomoo Suzuki

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Thermal conductivity of Pt alloys with an fcc single phase was comprehensively surveyed by employing the laser flash method. Thermal conductivity is dominantly determined by alloy composition and temperature and is scarcely influenced by fabrication condition. An addition of solute definitely decreases the thermal conductivity of Pt, and the conductivity-composition relationship is characterized by a sharp maximum at pure Pt. The Wiedemann-Franz relation held for Pt alloys suggests the dominant carrier of thermal conduction is an electron. An empirical rule is proposed that the thermal conductivity decreases significantly as the position of the solute element in the periodic table becomes horizontally more distant from that of Pt. Thermal conductivity of Pt alloys increases with increasing temperature in a range between 300-1100 K, and the temperature coefficient is found to be inversely correlated with the thermal conductivity.

Original languageEnglish
Pages (from-to)233-237
Number of pages5
JournalJournal of Alloys and Compounds
Volume285
Issue number1-2 Complete
DOIs
Publication statusPublished - 1999 Jan 1

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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    Terada, Y., Ohkubo, K., Mohri, T., & Suzuki, T. (1999). Thermal conductivity in Pt-based alloys. Journal of Alloys and Compounds, 285(1-2 Complete), 233-237. https://doi.org/10.1016/S0925-8388(98)01042-1