Sintering, crystallization and foaming of La2O3•SrO•5B2O3 glass powders: effect of the holding time

Karamanov, Alexander; Smiljanić, Sonja V.; Karamanova, Emilia; Matijašević, Srđan; Nikolić, Jelena; Savić, Veljko; Grujić, Snežana R.

doi:10.1016/j.jnoncrysol.2020.120168

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…However, unreasonable prolongation of holding time will (4) hinder densification process, which may be due to the occurrence of secondary recrystallization. 46 Figure 11 presents the visible and infrared absorption spectra of Pr 3+ in the Pr:BaF 2 ceramic. There are some absorption peaks were detected between the range of the wavelength of 400-2500 nm, the wavelength of detailed peaks, located in 444, 467, 480, 590, 1005, 1448, 1533, and 1965 nm, respectively, corresponding to the transition of ground state energy level of praseodymium ions to the different higher energy level: 3 peak with an absorption coefficient of 5.65 cm −1 located in 444 nm, which can be used as the excitation wavelength of characterization in emission spectra of Pr:BaF 2 .…”

Section: Resultsmentioning

confidence: 99%

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The effects of the solution reactant concentration and temperature on the preparation of Pr³⁺:BaF₂ transparent ceramics

Liu

Zhou

et al. 2021

J. Am. Ceram. Soc.

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Barium fluoride (BaF 2 ) crystals are attracting much attention as efficient inorganic scintillator promising for high-energy physics, industrial inspection, and other fields because of the fast component of the decay time (0.6 ns) and high radiation resistance. However, two major drawbacks limit its practical application: (i) a slow decay time of ~600 ns is derived from self-trapping excitons; (ii) the absolute light yield from the fast luminescence component is not competitive. The introducing of rare earth ions and preparation of BaF 2 polycrystalline ceramics is considered to be effective measures to solve these bottlenecks. Pr 3+ is extremely suitable as the activated ion of scintillation materials, which possess emission peaks located in visible band and the faster 5d-4f transition. In this work, highly sinterable Pr 3+ :BaF 2 precursor powder was synthesized via the coprecipitation method by adjusting the reactant concentration and temperature. The morphology and microstructure of as-synthesized powders were characterized using scanning electron microscopy (SEM) and transmittance electron microscopy analysis. The 5 at.% Pr 3+ :BaF 2 transparent ceramic with a transmittance of 50.7% at the wavelength of 500 nm was fabricated by hot pressing the as-prepared powders at 900°C for 4 h under the axial pressure of 50 MPa. The SEM images of ceramic cross-section show that the residual pore is the main light scattering source.The absorption and emission spectrum of ceramic samples were discussed.

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Section: Resultsmentioning

confidence: 99%

“…This result indicates that the extension of sintering time can effectively remove the residual pores. However, unreasonable prolongation of holding time will hinder densification process, which may be due to the occurrence of secondary recrystallization 46 …”

Section: Resultsmentioning

confidence: 99%

The effects of the solution reactant concentration and temperature on the preparation of Pr³⁺:BaF₂ transparent ceramics

Liu

Zhou

et al. 2021

J. Am. Ceram. Soc.

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Crystallization process and luminescence properties of LaBO3 glass ceramics

Bao

Wang

et al. 2023

J Mater Sci: Mater Electron

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Two-step sinter-crystallization of K2O–CaO–P2O5–SiO2 (45S5-K) bioactive glass

Silva

Puosso

Soares

et al. 2021

Ceramics International

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Sintering, crystallization and foaming of La2O3•SrO•5B2O3 glass powders: effect of the holding time

Cited by 5 publications

References 14 publications

The effects of the solution reactant concentration and temperature on the preparation of Pr³⁺:BaF₂ transparent ceramics

The effects of the solution reactant concentration and temperature on the preparation of Pr³⁺:BaF₂ transparent ceramics

Crystallization process and luminescence properties of LaBO3 glass ceramics

Two-step sinter-crystallization of K2O–CaO–P2O5–SiO2 (45S5-K) bioactive glass

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Sintering, crystallization and foaming of La2O3•SrO•5B2O3 glass powders: effect of the holding time

Cited by 5 publications

References 14 publications

The effects of the solution reactant concentration and temperature on the preparation of Pr3+:BaF2 transparent ceramics

The effects of the solution reactant concentration and temperature on the preparation of Pr3+:BaF2 transparent ceramics

Crystallization process and luminescence properties of LaBO3 glass ceramics

Two-step sinter-crystallization of K2O–CaO–P2O5–SiO2 (45S5-K) bioactive glass

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Product

Resources

About

The effects of the solution reactant concentration and temperature on the preparation of Pr³⁺:BaF₂ transparent ceramics

The effects of the solution reactant concentration and temperature on the preparation of Pr³⁺:BaF₂ transparent ceramics