Effect of metalloid substitution on the reversible structural relaxation of Fe-Ni-B(-P, Si) metallic glasses

A. Böhönyey, G. Huhn, L. Kiss, A. Lovas, I. Geröcs

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The reversible structural relaxation of Fe37.5Ni37.5B25-xPx (x = 0, 3, 6, 16, 25) and Fe37.5Ni37.5B25-ySiy (y = 0, 5, 10, 15) metallic glasses was investigated using the activation energy spectra (AES) model by differential scanning calorimetry (DSC) and resistivity measurements. From the deduced activation enthalpy spectra for these amorphous alloys, it is concluded that possibilities for atomic movements with characteristic activation energies are created by the substitution of B with P or Si. It is shown that at least one Gaussian contribution to the AES appears on increasing P or Si content, superimposed on an exponential part previously found for Fe-Ni-B glasses. The amplitude of the Gaussian function increases with increasing P or Si content while its position decreases with increasing P and remains constant with increasing Si content. According to isothermal resistivity measurements, for P substitution the reversible atomic rearrangements connected to the Gaussian contribution increase the resistivity while those associated with the exponential part decrease it. For Si substitution both processes decrease the resistivity.

Original languageEnglish
Pages (from-to)490-496
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume232-234
Publication statusPublished - Jul 11 1998

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Metalloids
Structural relaxation
metalloids
Metallic glass
metallic glasses
Polysilicon
Substitution reactions
Activation energy
substitutes
electrical resistivity
activation energy
energy spectra
Amorphous alloys
Differential scanning calorimetry
Enthalpy
Chemical activation
Glass
heat measurement
enthalpy
activation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Cite this

Effect of metalloid substitution on the reversible structural relaxation of Fe-Ni-B(-P, Si) metallic glasses. / Böhönyey, A.; Huhn, G.; Kiss, L.; Lovas, A.; Geröcs, I.

In: Journal of Non-Crystalline Solids, Vol. 232-234, 11.07.1998, p. 490-496.

Research output: Contribution to journalArticle

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AU - Geröcs, I.

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