Login for students

Login for employees

Publication detail

Single-curve multivariate kinetic analysis: Application to the crystallization of commercial Fe-Si-Cr-B amorphous alloys
Authors: Svoboda Roman | Chovanec Jozef | Šlang Stanislav | Beneš Ludvík | Konrad Peter
Year: 2021
Type of publication: článek v odborném periodiku
Name of source: Journal of Alloys and Compounds
Publisher name: Elsevier Science SA
Place: Lausanne
Page from-to: "161672-1"-"161672-13"
Titles:
Language Name Abstract Keywords
cze Jednokřivková multivariační kinetická analýza: Aplikace na krystalizaci komerčních amorfních Fe-Si-Cr-B materiálů Krystalizační chování tří komerčních amorfních materiálů na bázi Fe-Si-Cr-B bylo zkoumáno pomocí DSC, optické mikroskopie, SEM a XRD. Komplexní krystalizační kinetika byla popsána pomocí transformačního mechanizmu zahrnujícího více současně probíhajících nezávislých procesů vyhovujících autokatalytickému Sestak-Berggren modelu. Kinetické parametry modelu byly získány jednokřivkovou multivariační analýzou. Fe-Si-Cr-B skla; Sc-MKA; Krystalizační kinetika
eng Single-curve multivariate kinetic analysis: Application to the crystallization of commercial Fe-Si-Cr-B amorphous alloys Crystallization behavior of three commercial Fe-Si-Cr-B amorphous alloys (AFSC, SAP-2KC and AW2-08) was investigated by means of differential scanning calorimetry, optical and scanning electron microscopies, and X-ray diffraction analysis. The complex crystallization kinetics was described using the transformation mechanism of multiple overlapping independent processes following the autocatalytic Sestak-Berggren model. Kinetic parameters of this reaction scheme were determined using the newly developed method of single-curve multivariate kinetic analysis (sc-MKA). Accuracy of the kinetic predictions made by this method was confirmed via combined experiment consisting of low-temperature isothermal annealing followed by non-isothermal scan. The sc-MKA method accurately predicted the degrees of conversion achieved during the annealing. In addition, for AFSC and SAP-2KC the method also very well predicted the actual complex growth rate occurring during the consequent heating. Merits of the combined iso-/nonisothermal temperature programs were discussed with respect to the unexpected conversion-dependent change of crystallization kinetics found for the AW2-08 amorphous alloy. Fe-Si-Cr-B glasses; Sc-MKA; Crystallization kinetics

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives