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Combustion synthesis and structural characterization of theTiB.sub.2./sub.–(Na.sub.2./sub.O.2B.sub.2./sub.O.sub.3./sub.–Al.sub.2./sub.O.sub.3./sub.) composites
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SYSNO ASEP 0449348 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Combustion synthesis and structural characterization of theTiB2–(Na2O.2B2O3–Al2O3) composites Tvůrce(i) Buixaderas, Elena (FZU-D) RID, ORCID
Anghel, M. (RO)
Atkinson, I. (RO)
Simon, P. (FR)
Bratan, V. (RO)
Petrescu, S. (RO)Zdroj.dok. Ceramics International. - : Elsevier - ISSN 0272-8842
Roč. 41, 2B (2015), s. 2680-2689Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova powders ; composites ; spectroscopy ; optical properties Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Institucionální podpora FZU-D - RVO:68378271 UT WOS 000348003100006 EID SCOPUS 84919430969 DOI 10.1016/j.ceramint.2014.10.082 Anotace Two TiB2:(Na2B4O7–Al2O3)=3:5 and TiB2:(1.28Na2B4O7–Al2O3)=6:7 compositions, named 5DB and 7DB respectively, were prepared by combustion synthesis in simultaneous mode at 800, 900 and 1000 °C. X-ray diffraction, differential scanning calorimetry (DSC), UV–vis and room and high temperature Raman measurements were carried out to investigate the combustion products. The crystalline phase of the 5DB composite yielded at 1000 °C (5DB_1000), which represents 62 wt%, mostly consists of TiB2 (93 wt%) while Ti2O3 accounts for only 7 wt%. Proportion of the tetrahedral boron atoms, N4, in the blank and embedding sodium aluminium borate matrices was found from the high frequency Raman spectra using a constrained-width model in order to agree with the literature NMR data. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2016
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