Abstract

The Smith thermal analysis technique has been used to study phase boundaries and invariant reactions in the In-Cd system. Results obtained from measurements at eleven compositions are in full agreement with the phase diagram proposed by Heumann and Predel. DSC measurements at low scan rates have been carried out over the temperature range including the eutectic and eutectoid reactions. Measurements of the total heat effect together with the lever rule have been used to obtain, (i) enthalpies of reaction for both the eutectic and eutectoid reactions, and (ii) compositions of the phases involved in these invariant reactions. The method used should have wide applicability to eutectic and eutectoid reactions in a range of systems.

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