Kinetic study of rapidly quenched Ni81P19 amorphous alloys

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Abstract

Differential scanning calorimetry (DSC) measurements with different temperature programs were used to study the crystallization kinetics of Ni81P19 amorphous ribbons quenched from melt at different temperatures (920-1600°C) and from a constant melt temperature (920°C) at different quenching rates leading to different thickness. A mathematical model was proposed assuming that the nuclei are formed during the preparation and pretreatment of the samples and grow during the DSC experiments. Its validity was proved by the non-linear least squares evaluation of 44 DSC experiments. This model describes our experiments better than Avrami-Erofeev equation.

Original languageEnglish
Pages (from-to)79-84
Number of pages6
JournalThermochimica Acta
Volume351
Issue number1-2
DOIs
Publication statusPublished - Jun 1 2000

Keywords

  • Crystallization kinetics
  • DSC
  • NiP amorphous alloy
  • Simultaneous least-squares evaluation

ASJC Scopus subject areas

  • Instrumentation
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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