Application of Laser Polarimetry to the Measurement of Specific Heat Capacity and Enthalpy of the Alloy 53Nb-47Ti (mass%) in the Temperature Range 1600 K to 2000 K by a Millisecond-Resolution Pulse Heating Technique

Published

November 1, 1999

Author(s)

D Basak, Ursula R. Kattner, J L. McClure, Daniel Josell, A Cezairliyan

Abstract

The determination of the specific heat capacity, enthalpy and electrical resistivity of the alloy, 53Nb-47Ti (mass%), in the temperature range 1600 K to 2000 K is described. The method is based on rapid resistive self-heating of a solid cylindrical specimen from room temperture to the maximum temperature of interest by the passage of a subsecond-duration electric current pulse through the specimen and on simultaneouly measuring the pertinent experimental quantities. The experimental quantities measured are the current through the specimen, voltage drop across the effective specimen, specimen radiance temperature at two wavelengths and normal spectral emissivity of the specimen. The present study extends this technique, previously applied to pure metals, to the determination of specific heat capacity and enthalpy of the alloy, 53Nb-47Ti. The measured properties were compared to those calculated from a thermodynamic description of the Nb-Ti system.

Citation

International Journal of Thermophysics

Volume

21

Issue

No. 4

Pub Type

Journals

Keywords

alloy, electrical resistivity, enthalpy, high temperature, laser polarimetry, pulse heating, specific heat capacity, subsecond thermophysics

Citation

Basak, D. , Kattner, U. , McClure, J. , Josell, D. and Cezairliyan, A. (1999), Application of Laser Polarimetry to the Measurement of Specific Heat Capacity and Enthalpy of the Alloy 53Nb-47Ti (mass%) in the Temperature Range 1600 K to 2000 K by a Millisecond-Resolution Pulse Heating Technique, International Journal of Thermophysics (Accessed December 13, 2024)