A NUMERICAL MODEL OF A TWO-PAN HEAT FLUX DSC

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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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