Glass and glass ceramic materials obtained by pulsed laser deposition in the BaO–TiO2–B2O3 system

Boroica, Lucica; Medianu, R.; Dinescu, M.; Boroica, Isidor

doi:10.1016/j.apsusc.2005.03.058

Cited by 1 publication

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“…The microstructure of glasses showed unique homogeneous phase free pores and cracks, Figure 2. These glasses had similar microstructure to those reported in previous work [9], but different from the microstructure reported by Ruiz-Valdes et al [5]. Although the EDS results are semi-quantitative, since no boron can be detected, the increase in PbO in the compositions can be seen.…”

Section: Glass Characterizationsupporting

confidence: 63%

“…In this sense, for many years, TiO 2 glasses and glass-ceramics have had a great interest in fundamental and technologic research due to their optical and chemical properties [1]. However, the main problem reported is obtaining stable glasses (without superficial or volume crystallization) since it is well-known that TiO [2][3][4][5][6][7][8][9]. In these systems, the introduction of fluxes and modifier oxides was necessary to obtain a stable glassy structure.…”

Section: Introductionmentioning

confidence: 99%

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Crystallization of Glasses Containing K2O, PbO, BaO, Al2O3, B2O3, and TiO2

et al. 2022

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The objective of this work was to obtain glass-ceramics from stable glasses, with a composition of barium, lead, and potassium titanate phases, for use as semiconductors. For this purpose, the glass-ceramic technique was used to control crystal growth and obtain a fine-grained microstructure. Various glasses containing K2O, PbO, BaO, Al2O3, B2O3, and TiO2 were prepared using a melt-quenching method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) showed a single amorphous phase of all samples. Infrared spectra confirmed the presence of B-O bonds stretching vibrations of (B3O6)3− boroxol rings and BO3 triangles, as well as Ti-O stretching vibrations of (TiO6/2) and (AlO6/2) octahedral units. Thermal analyses confirmed the presence of one or more crystallization peaks in the range of 700 to 744 °C. On this base, they were heat-treated to promote crystal growth. XRD and SEM detected Ba4Ti12O27, Ti7O13, and BaTiO3 phases, homogeneously distributed throughout the material with fine crystallite size. In addition, crystallized glasses’ (glass-ceramics) properties were determined; the density values were 2.8–3.55 g/cm3; the chemical resistance to acidic and basic media was low; and the band-gap values were in the range of 2.88 to 3.05 eV. These results suggest that crystallized glasses may have application in photocatalysis.

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Section: Glass Characterizationsupporting

confidence: 63%