Processing and properties of novel ZnO–Bi2O3–B2O3 glass-ceramic nanocomposites

Schwarz, Casey M.; Kang, Myungkoo; Altemose, Quentin; Raichle, Katrina; Schnable, Brittani; Grabill, Christopher N.; Rice, J.A.; Truman, Mia; Pantano, Carlo G.; Mingareev, Ilya; Sisken, Laura; Rivero‐Baleine, Clara; Richardson, Kathleen; Kuebler, Stephen M.

doi:10.1016/j.jallcom.2019.153173

Cited by 17 publications

(2 citation statements)

References 19 publications

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“…The 12 h-sintered pattern reveals additional crystalline phases-Bi 2 ZnB 2 O 7 and an unknown phase. These two crystalline phases are also found in literature about Bi 2 O 3 -based glasses [58][59][60][61][62][63][64][65][66]. On the other hand, it was found that all the 30 min-sintered glasses made from the coarse powders (d…”

supporting

confidence: 78%

Preparation of transparent Bi₂O₃‐ZnO‐B₂O₃ glass by conventional sintering at low temperatures

Shyu,

2023

J Am Ceram Soc.

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Glass components fabricated by the sintering route have wide‐ranging applications. However, one issue is that the crystallization tendency of glass powders often leads to residual pore‐glass interfaces and crystal‐glass interfaces, thereby causing strong light scattering and rendering the sintered glass opaque. This issue is particularly pronounced in glasses with a low glass transition temperature (Tg) due to their weak bonding and thus high crystallization tendency. In the present study, a Bi2O3‐ZnO‐B2O3 glass with a low Tg of 364°C was fabricated using the conventional sintering method to explore whether transparent glass materials can be obtained. The temperature range of crystallization of the glass powders was analyzed using differential scanning calorimetry. X‐ray diffraction was employed to analyze the crystalline phases formed in the sintered glasses. The microstructure of the sintered glasses was examined using scanning electron microscopy. The optical transmittance of the sintered glasses was measured using ultraviolet‐visible spectroscopy. The results show that transparent sintered glasses with the highest transmittance of 54% at the wavelength of 650 nm can be obtained by using a coarser initial particle size, lower forming pressure, and an appropriate sintering temperature/time (430°C/30 min). It is suggested that this combination of processing parameters can suppress glass crystallization while maintaining a low glass viscosity during sintering.

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confidence: 78%

Preparation of transparent Bi₂O₃‐ZnO‐B₂O₃ glass by conventional sintering at low temperatures

Shyu,

2023

J Am Ceram Soc.

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“…These findings suggest that the presence of Bi 2 O 3 can significantly affect the structure and properties of glasses and highlight the importance of studying its behavior in glass systems. The crystallization behavior of Bi 2 O 3 -30 B 2 O 3 -20 ZnO glasses for brazing [23], the effect of Bi 2 O 3 content on glass transition temperature and glass structure [24], the formation of nanocrystals by heat treatment in Bi 2 O 3 -B 2 O 3 -ZnO systems [25], and the synthesis of lead-free low-melting glasses due to the weak bonding of Bi 2 O 3 [26,27] or their combinations [28] as electrons in the glass network have been reported. The thermal properties of (70 − x) ZnO-30 B 2 O 3 -xBi 2 O 3 (x = 10, 15, 20, 40, 50, 60) were investigated by differential scanning calorimetry (DSC, LABSYS evo, Setaram Instruments, Mougins, France) analysis, depending on the composition, to determine the best glass stability in BiO 2 -based lead-free cloisonne glaze systems.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability of Lead-Free Transparent Cloisonné Glazes

2023

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Glazes of (70 − x) ZnO-30 B2O3-x Bi2O3 with different Bi2O3 contents were prepared by the conventional melt quench technique. Differential scanning calorimetry (DSC) curves were obtained to determine the glass transition temperature (Tg) and crystallization temperature (Tc) of the glazes. The activation energy of the glass transition (Eg) and crystallization (Ec) were calculated using the Moynihan and Kissinger models, respectively. The glass transition temperature (Tg) decreased linearly with increasing Bi2O3 content. This is because the larger Bi3+ ions reduced network connectivity and opened up the structure. The Tg increased gradually with increasing heating rate (β). This is because the higher heating rate provided more energy for the glass to transition to the liquid state. The activation energy of the glass transition (Eg) decreased with increasing Bi2O3 content. This indicates that the glass-forming ability of the system increased with increasing Bi2O3 content. The energy corresponding to the amorphous-to-crystalline transformation during nucleation and crystal growth (Ec) increased with increasing Bi content to about 30%, and then decreased above 40%. This suggests that higher Ec values have an advantage in preventing crystallization in the crystallization danger region. It can be seen that the addition of Bi2O3 in (70 − x) ZnO-30 B2O3-x Bi2O3 glazes affects the density and distribution of oxygen atoms in the glass structure. It can also be seen that the increased Bi content promotes the formation of Bi-O-Bi bonds, which act as network modifiers to reduce the number of non-cross-linked oxygen atoms and increase network connectivity.

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Wetting and Spreading Behavior of Bi2O3-B2O3 (-ZnO) Glass on Silver

Zhao

Xing²,

Zhang³

et al. 2023

J. of Materi Eng and Perform

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Processing and properties of novel ZnO–Bi2O3–B2O3 glass-ceramic nanocomposites

Cited by 17 publications

References 19 publications

Preparation of transparent Bi₂O₃‐ZnO‐B₂O₃ glass by conventional sintering at low temperatures

Preparation of transparent Bi₂O₃‐ZnO‐B₂O₃ glass by conventional sintering at low temperatures

Thermal Stability of Lead-Free Transparent Cloisonné Glazes

Wetting and Spreading Behavior of Bi2O3-B2O3 (-ZnO) Glass on Silver

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Processing and properties of novel ZnO–Bi2O3–B2O3 glass-ceramic nanocomposites

Cited by 17 publications

References 19 publications

Preparation of transparent Bi2O3‐ZnO‐B2O3 glass by conventional sintering at low temperatures

Preparation of transparent Bi2O3‐ZnO‐B2O3 glass by conventional sintering at low temperatures

Thermal Stability of Lead-Free Transparent Cloisonné Glazes

Wetting and Spreading Behavior of Bi2O3-B2O3 (-ZnO) Glass on Silver

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Product

Resources

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Preparation of transparent Bi₂O₃‐ZnO‐B₂O₃ glass by conventional sintering at low temperatures

Preparation of transparent Bi₂O₃‐ZnO‐B₂O₃ glass by conventional sintering at low temperatures