Single-curve multivariate kinetic analysis: Application to the crystallization of commercial Fe-Si-Cr-B amorphous alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F21%3A39918030" target="_blank" >RIV/00216275:25310/21:39918030 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0925838821030814?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838821030814?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2021.161672" target="_blank" >10.1016/j.jallcom.2021.161672</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Single-curve multivariate kinetic analysis: Application to the crystallization of commercial Fe-Si-Cr-B amorphous alloys

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Single-curve multivariate kinetic analysis: Application to the crystallization of commercial Fe-Si-Cr-B amorphous alloys

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

889

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

"161672-1"-"161672-13"

Kód UT WoS článku

000705604500005

EID výsledku v databázi Scopus

2-s2.0-85114013247