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Investigation of the thermoelectrical properties of the Sn91.2−x–Zn8.8–Agx alloys

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Abstract

Sn91.2−x–Zn8.8–Agx alloys (x = 0.15–10.0 wt%) were directionally solidified upwards at a constant G (4.16 K mm−1) and V (41.5 μm s−1) in a Bridgman-type directional solidification furnace. The electrical resistivity (ρ) measurements of the alloys depending on the temperature were performed using the standard four-point probe method, and the temperature coefficients of the resistivities (α) were calculated. Composition analyses of the alloys were carried out using energy-dispersive X-ray spectroscopy. The enthalpy (∆H) and the specific heat (∆Cp) values of the alloys were determined by differential scanning calorimetry analysis. The thermal conductivity (K) values were obtained from the Wiedemann–Franz equation. According to the experimental results, electrical resistivities increased up to 3.0 mass% Ag and decreased with further increase in Ag content. Enthalpy and specific heat values decreased with the increasing content of Ag. The results were compared with the previous works for Sn–Zn–Ag alloys.

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Acknowledgements

This project was supported by the Niğde Ömer Halisdemir University Scientific Research Project Unit under Contract No: FEB 2013/18. The authors would like to thank to Niğde University Scientific Research Project Unit for their financial support.

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Authors and Affiliations

  1. Department of Electronics and Automation, Technical Vocational School of Sciences, Niğde Ömer Halisdemir University, Niğde, Turkey

    M. Şahin

  2. Department of Physics, Faculty of Arts and Sciences, Niğde Ömer Halisdemir University, Niğde, Turkey

    E. Çadırlı

  3. Department of Physics, Faculty of Science, Erciyes University, Kayseri, Turkey

    Ü. Bayram

  4. Department of Metallurgical and Materials Engineering, Faculty of Engineering and Architecture, Nevşehir Hacı Bektaş Veli University, Nevşehir, Turkey

    P. Ata Esener

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  1. M. Şahin
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  2. E. Çadırlı
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  3. Ü. Bayram
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  4. P. Ata Esener
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Correspondence to M. Şahin.

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Şahin, M., Çadırlı, E., Bayram, Ü. et al. Investigation of the thermoelectrical properties of the Sn91.2−x–Zn8.8–Agx alloys. J Therm Anal Calorim 132, 317–325 (2018). https://doi.org/10.1007/s10973-017-6939-3

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  • DOI: https://doi.org/10.1007/s10973-017-6939-3

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