Thermodynamic model and high temperature Raman spectra of Na2O-B2O3 glassforming melts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914515" target="_blank" >RIV/00216275:25310/19:39914515 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0925838819319814?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838819319814?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2019.05.293" target="_blank" >10.1016/j.jallcom.2019.05.293</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermodynamic model and high temperature Raman spectra of Na2O-B2O3 glassforming melts

Popis výsledku v původním jazyce

The set of 33 baseline subtracted and thermally corrected Raman spectra of xNa(2)O center dot(1-x)B2O3 (x = 0.10, 0.15, 0.20, 0.25, 0.30, 0.40, and 0.50) glassforming melts measured at temperatures ranging from 501 degrees C to 1145 degrees C was analyzed. The real error estimated by Principal Component Analysis indicated 3-4 independent components. The Multivariate Curve Analysis (MCR) performed for three components resulted in the Raman spectra (so called loadings) and relative abundances (so called scores) of each component. The thermodynamic model of Shakhmatkin and Vedishcheva (SVTDM) was evaluated for each studied melt. Ten following system components were considered: Na2O, B2O3, 3Na(2)O center dot B2O3 (N3B), 2Na(2)O center dot B2O3 (N2B), Na2O center dot B2O3 (NB), Na2O center dot 2B(2)O(3) (NB2), Na2O center dot 3B(2)O(3) (NB3), Na2O center dot 4B(2)O(3) (NB4), Na2O center dot 5B(2)O(3) (NB5), and Na2O center dot 9B(2)O(3) (NB9). The Malfait&apos;s spectral decomposition was performed considering the equilibrium molar amounts of the components with highest abundance, i.e. B, NB, and NB4. The obtained partial Raman spectra were compared with the loadings obtained by MCR. The acceptable coincidence was found. The MCR adjusted scores were close to the SVTDM equilibrium molar amounts of system components considered in the Malfait&apos;s decomposition. The obtained results validate the correctness of the SVTDM. (C) 2019 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

Thermodynamic model and high temperature Raman spectra of Na2O-B2O3 glassforming melts

Popis výsledku anglicky

The set of 33 baseline subtracted and thermally corrected Raman spectra of xNa(2)O center dot(1-x)B2O3 (x = 0.10, 0.15, 0.20, 0.25, 0.30, 0.40, and 0.50) glassforming melts measured at temperatures ranging from 501 degrees C to 1145 degrees C was analyzed. The real error estimated by Principal Component Analysis indicated 3-4 independent components. The Multivariate Curve Analysis (MCR) performed for three components resulted in the Raman spectra (so called loadings) and relative abundances (so called scores) of each component. The thermodynamic model of Shakhmatkin and Vedishcheva (SVTDM) was evaluated for each studied melt. Ten following system components were considered: Na2O, B2O3, 3Na(2)O center dot B2O3 (N3B), 2Na(2)O center dot B2O3 (N2B), Na2O center dot B2O3 (NB), Na2O center dot 2B(2)O(3) (NB2), Na2O center dot 3B(2)O(3) (NB3), Na2O center dot 4B(2)O(3) (NB4), Na2O center dot 5B(2)O(3) (NB5), and Na2O center dot 9B(2)O(3) (NB9). The Malfait&apos;s spectral decomposition was performed considering the equilibrium molar amounts of the components with highest abundance, i.e. B, NB, and NB4. The obtained partial Raman spectra were compared with the loadings obtained by MCR. The acceptable coincidence was found. The MCR adjusted scores were close to the SVTDM equilibrium molar amounts of system components considered in the Malfait&apos;s decomposition. The obtained results validate the correctness of the SVTDM. (C) 2019 Elsevier B.V. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

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

798

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

700-705

Kód UT WoS článku

000471631300081

EID výsledku v databázi Scopus

2-s2.0-85066415031