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Combined DSC and Pulse-Heating Measurements of Electrical Resistivity and Enthalpy of Tungsten, Niobium, and Titanium

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Abstract

Measurements of thermophysical properties such as enthalpy, electrical resistivity, and specific heat capacity as a function of temperature starting from the solid state into the liquid phase for W, Nb, and Ti are presented in this work. An ohmic pulse-heating technique allows measurements of enthalpy and electrical resistivity from room temperature to the end of the stable liquid phase within 60 μ s. The simultaneous optical measurement of temperature is limited by the fast pyrometers with an onset temperature of Tmin = 1200–1500 K; below these temperatures, the fast pyrometers are not sensitive. A differential scanning calorimeter (DSC) is used for determination of the specific heat capacity, and also to obtain enthalpy values in the temperature range of 600–1700 K. Combining the two methods entends the range of values of electrical resistivity and enthalpy versus temperature down to 600 K. Results on the metals W, Nb, and Ti are reported and compared to literature values. This paper is a continuation of earlier work.

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Authors and Affiliations

  1. Institute for Experimental Physics, Graz University of Technology, Petersgasse 16, 8010, Graz, Austria

    B. Wilthan, C. Cagran & G. Pottlacher

Authors
  1. B. Wilthan
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  2. C. Cagran
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  3. G. Pottlacher
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Correspondence to G. Pottlacher.

Additional information

Paper presented at the Seventh International Workshop on Subsecond Thermophysics, October 6–8, 2004, Orléans, France.

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Wilthan, B., Cagran, C. & Pottlacher, G. Combined DSC and Pulse-Heating Measurements of Electrical Resistivity and Enthalpy of Tungsten, Niobium, and Titanium. Int J Thermophys 26, 1017–1029 (2005). https://doi.org/10.1007/s10765-005-6682-z

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