Details

Autor(en) / Beteiligte

• Lu, Xiaochao
• Li, Hongying
• Xiao, Peilu
• Wu, Ronghai
• Li, Dewang

Titel

The kinetic analysis of the non-isothermal crystallization process of (Zr46Cu42Al7Y5)95Be5 metallic glass

Ist Teil von

• Thermochimica acta, 2013-10, Vol.570, p.27-32

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •The kinetic triplet of investigated glass was evaluated in considered range.•The value of A(α) was determined from the kinetic compensation effect.•The result of IKP were consistent with the previous calculation.•The best reaction models of the three crystallization processes were determined. The crystallization processes of three clearly separated crystallization peaks of (Zr46Cu42Al7Y5)95Be5 metallic glass, under non-isothermal condition, are studied using differential scanning calorimetry (DSC) technique. It was found that the crystallization processes of (Zr46Cu42Al7Y5)95Be5 metallic glass represent the complex processes, where there are conversion regions with a constant value of the activation energy (Eα). The pre-exponential frequency A(α) was determined from the linear relation, known as the kinetic compensation effect. The invariant kinetic parameters (lnAinv, Eα,inv) for the three crystallization processes were calculated, which is approximately the average values obtained by the Vyazovkin method in the considered interval. Finally, the master plots method was successfully utilized to determine the reaction model, and the best reaction models for describing the three crystallization kinetic processes are A2, A3/2 and A3/2, respectively.