Abstract
The subject of metallic glasses is introduced. These materials have technological potential, but only if their stability is adequate. It is, therefore, important to study their transformations on annealing, especially structural relaxation. The ferromagnetic Curie temperature, T c, is a particularly useful parameter for monitoring structural relaxation and it can be measured by differential scanning calorimetry (DSC). The DSC method is convenient and accurate if temperature lags are corrected for. Ways of performing this correction in the DuPont DSC system are reviewed and a new method is proposed and tested. The experimental details of determining the T c of metallic glasses are given. Finally, the relaxation behaviour of Fe 80B 20 glass, as studied by measuring its T c, is reviewed. This behaviour is similar to that of conventional oxide glasses.
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