Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Stanislav S. Slavov"'
Autor:
Stanislav S. Slavov, Milena Z. Krapchanska, Elena P. Kashchieva, Svetlin B. Parvanov, Yanko B. Dimitriev
Publikováno v:
Processing and Application of Ceramics, Vol 6, Iss 3, Pp 117-122 (2012)
Bismuth-titanate ceramics containing SiO2 and Nd2O3 as additives are synthesized by melt quenching method in the system Bi2O3-TiO2-Nd2O3-SiO2 in the temperature range of 1250–1500 °C. The phase composition of the obtained materials is determined b
Externí odkaz:
https://doaj.org/article/6a10ac3ac91e4e80bdad2e26593563f3
Publikováno v:
Processing and Application of Ceramics, Vol 4, Iss 1, Pp 39-43 (2010)
Bismuth-titanate ceramics containing SiO2 and Nd2O3 as additives are synthesized at two different ways of cooling of the melts. The introduction of SiO2 and Nd2O3 leads to more complex crystallization with participation of several phases including Bi
Externí odkaz:
https://doaj.org/article/e9f67de18d4947e49ccae5928c72b7a8
Publikováno v:
Processing and Application of Ceramics, Vol 3, Iss 4, Pp 171-175 (2009)
Synthesis and characterization of SiO2 doped bismuth titanate ceramics were investigated. Four investigated compositions belonging to the system Bi2O3-TiO2-SiO2 are located in the section Bi4Ti3O12-SiO2, near by it and in the binary Bi2O3-TiO2 system
Externí odkaz:
https://doaj.org/article/f54dff9edeee456d8d71006e35fa4687
Autor:
Liliya Vladislavova, Ruzha Harizanova, Christian Rüssel, Christian Bocker, Stanislav S. Slavov, Georgi Avdeev, Luís Costa
Publikováno v:
Ceramics International. 46:24585-24591
From a glass with the mol% composition 20.1 Na2O-3 Al2O3-23.1 BaO-23 TiO2-7.6 B2O3-17.4 SiO2-5.8 Fe2O3 cubic barium titanate was crystallized. Scanning and transmission electron microscopy micrographs of the prepared glass-ceramics show fine crystals
Autor:
Stanislav S. Slavov, S. Soreto Teixeira, Luís Costa, Yanko Dimitriev, Venetka Popova, M.P.F. Graça
Publikováno v:
International Journal of Applied Glass Science. 10:202-207
Autor:
Anna D. Staneva, Radoslav Raykov, Yanko Dimitriev, P. R. Prezas, Stanislav S. Slavov, Luís Costa, S. Soreto Teixeira
Publikováno v:
International Journal of Applied Glass Science. 10:75-82
Growing Oriented Layers of Bi4Ti3O12 in Bi2O3/TiO2/SiO2/Nd2O3/Al2O3 Glass-Ceramics by Melt Quenching
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
A glass melt with the composition 24Bi2O3/40TiO2/10SiO2/10Nd2O3/16 Al2O3 was prepared and rapidly quenched between two copper blocks (sample A). A part of this glass was subsequently crystallised at 800 °C for 8 h (sample B). For the preparation of
Publikováno v:
CrystEngComm. 19:2775-2785
Four glasses in the Bi2O3/TiO2/SiO2 and Bi2O3/TiO2/SiO2/Nd2O3 systems are melted and poured into graphite moulds where they show spontaneous crystallization during cooling. The crystal phases α-Bi2Ti4O11, Bi4−xNdxTi3O12, Bi2Si1−yTiyO5, TiO2 and
Autor:
Ruzha Harizanova, Luís Costa, Christian Bocker, Georgi Avdeev, Ivalina Avramova, Stanislav S. Slavov, Christian Rüssel
Publikováno v:
Journal of Non-Crystalline Solids. 560:120711
Glasses with the mol % composition 20.1Na2O/23TiO2/23.1BaO/3Al2O3/7.6B2O3/17.4SiO2/5.8Fe2O3 were synthesized. During heat treatment at 550°C for 5 min to 7 h, cubic BaTiO3 crystallized. The microstructure of the glass-ceramics was studied by scannin
Publikováno v:
Key Engineering Materials. 538:233-237
Bismuth-titanate ceramics containing SiO2and Nd2O3as additives are synthesized by melt quenching method in the system Bi2O3-TiO2-Nd2O3-SiO2at temperature 1450 oC. By X-ray diffraction analysis are determined the crystal phases participating in the ma