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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 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Combustion synthesis and structural characterization of theTiB2–(Na2O.2B2O3–Al2O3) composites Author(s) Buixaderas, Elena (FZU-D) RID, ORCID
Anghel, M. (RO)
Atkinson, I. (RO)
Simon, P. (FR)
Bratan, V. (RO)
Petrescu, S. (RO)Source Title Ceramics International. - : Elsevier - ISSN 0272-8842
Roč. 41, 2B (2015), s. 2680-2689Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords powders ; composites ; spectroscopy ; optical properties Subject RIV CF - Physical ; Theoretical Chemistry Institutional support FZU-D - RVO:68378271 UT WOS 000348003100006 EID SCOPUS 84919430969 DOI 10.1016/j.ceramint.2014.10.082 Annotation 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. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2016
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