Abstract
A numerical program has been written to treat a heat-flux DSC. The model operates in two modes. In the first,experimental data is used as input and the enthalpy is calculated as a function of the sample temperature rather than the sample thermocouple temperature. This allows accurate enthalpies and transition temperatures to be obtained without smearing.
In the second mode, enthalpy is used as an input and the responses of the calorimeter are calculated. Using this mode it is possible to investigate the effects of sample size, heating rate and alloy composition. Non-equilibrium effects and difficulty in nucleation can also be included.
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References
H. B. Dong and J. D. Hunt, High Temperature-High Pressure, 32 (2000) 311.
K. Ishikiriyama, A. Boller and B. Wunderlich, J. Thermal Anal., 50 (1997) 553.
G. Höhne, W. Hemminger and H.-J. Flammershein, Differential Scanning Calorimetry, Springer, Berlin 1996, p. 122.
R. H. Davies, A. T. Dinsdale, T. G. Chart, T. I. Barry and M. H. Rand, ‘Proc. Conf. Sixth International Conference on High Temperatures, Chemistry of Inorganic Materials’ 3-7 April 1989, National Institute for Standards and Technology, Gaithersburg, Maryland, USA. ‘Application of MTDATA to the modelling of multicomponent equilibria’. High Temp. Science, 1990, 26, 251-262.
J. D. Hunt and R. W. Thomas, Proceedings of the international conference on solidification processing, July 1997, University Press, Sheffield, pp 143-150.
H. B. Dong, PhD thesis, Oxford 2000.
R. Ciach, W. Kapturkiewicz, W. Wolczynski and A. M. Zahra, J. Thermal Anal., 38 (1992) 1949.
G. Höhne, W. Hemminger and H.-J. Flammershein, Differential Scanning Calorimetry, Springer, Berlin 1996, p. 22.
P. Claudy and J. M. Letoffe, J. Therm. Anal. Cal., 53 (1998) 737.
M. J. Richardson, In Compendium of Thermophysical Property Measurement Methods, Plenum Press, New York 1992, pp. 519-545.
M. Reading, D. Elliot and V. L. Hill, J. Thermal Anal., 49 (1993) 949.
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Dong, H.B., Hunt, J.D. A Numerical Model of a Two-pan Heat Flux DSC. Journal of Thermal Analysis and Calorimetry 64, 167–176 (2001). https://doi.org/10.1023/A:1011589013639
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DOI: https://doi.org/10.1023/A:1011589013639