The ΔE^*_α(α) dependence calculated by the isoconversional method for the isothermal R1 and R2 crystallization peaks of the as-quenched glassy Fe₇₃Si₁₅B₁₀ ribbon, respectively.

Isoconversional methods (Friedman)

Procedure:

Differential-integral methods.

Isothermal measuring regime.

Several measurements at various temperatures, T_a.

Then the activation energy ΔE^*_α (kinetic parameter) could be determined:

ln[y_α=const(t)] = -ΔE^*_α/(RT_a) + const - Friedman method (y(t) – DSC signal, α – constant degree of conversion)

Further for various α , the ΔE^*_α(α) dependence could be analyzed.

or also

Dynamic measuring regime.

Several measurements at various heating rates, w⁺.

Then the activation energy ΔE^*_α (kinetic parameter) could be determined:

ln[y_α=const(T)] = -ΔE^*_α/(RT_α) + const - Friedman-Gupta method (y(T) – DSC signal, α – constant degree of conversion)

Further for various α , the ΔE^*_α(α) dependence could be analyzed.

Procedure assumes:
Equivalent degree of conversion, α, for all heating rates, w⁺.
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