Thermal behavior of GeO2 doped PbO–B2O3–ZnO–Bi2O3 glasses

Cheng, Yin; Xiao, Huining; Guo, Wei‐Ming

doi:10.1016/j.msea.2005.09.130

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…Which also have wide applications in the field of glass ceramic, electronic devices, thermal and mechanical sensors, etc. [3][4][5]. However, lead oxide glass systems should be replaced by lead-free glasses on account of its toxicity to the environment and the human body.…”

Section: Introductionmentioning

confidence: 99%

Effect of Bi2O3 on structure and wetting studies of Bi2O3–ZnO–B2O3 glasses

Wang

Deng

2011

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Effect of Bi2O3 on structure and wetting studies of Bi2O3–ZnO–B2O3 glasses

Wang

Deng

2011

Journal of Alloys and Compounds

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“…Organic materials include epoxy resin, silicone rubber and silicone resin. Recently, CHENG et al [6] studied the structure and crystallization kinetics of Bi 2 O 3 -B 2 O 3 glasses and RADU et al [7] employed infrared and Raman spectra studies to investigate the structural units in bismuth based glasses. Inorganic materials include glass and enamel, which are applied to high-temperature, gas-tight sealing mainly.…”

Section: Introductionmentioning

confidence: 99%

Structure of Bi2O3-ZnO-B2O3 system low-melting sealing glass

Cheng

Deng

et al. 2010

J. Cent. South Univ. Technol.

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Bi 2 O 3 -ZnO-B 2 O 3 system glass is a kind of lead-free low melting sealing glasses. The structure of Bi 2 O 3 -ZnO-B 2 O 3 system low-melting sealing glass was investigated by DSC, FT-IR, XRD and SEM. The results show that with the increase of B 2 O 3 content, the transition temperature T g and softening temperature T f of Bi 2 O 3 -ZnO-B 2 O 3 system low-melting sealing glasses increase, which leads to the liquid phase precipitation temperature increasing and promotes the structure stability in the glass. With increasing the heat treatment temperature, a large number of liquid phases appear in samples and the sinter efficiency of the samples increases. The FT-IR spectra of the glasses show the presence of some bands that are assigned to vibrations of Bi-O bond from [BO 3 ] pyramidal and [BiO 6 ] octahedral units and B-O from [BO 3 ] and [BO 4 ] units. With the decrease of B 2 O 3 content, the crystallization tendency of the glass increases. In glass samples B 1 and B 2 , crystallization starts at 460 ℃ and 540 ℃, respectively. Both of them precipitate Bi 24 B 2 O 39 phases.

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“…The lead oxide (PbO) glass system is widely used for commercial purposes due to its high structural stability, low glass transfer temperature, and excellent heat and electrical properties [4][5][6]. It is also widely applied in glass ceramics, electronic devices, and thermal and mechanical sensors [7,8] because it efficiently lowers the melting point, improves wettability with oxides, and has high reflectance due to its high refractive index [9,10].…”

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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Thermal behavior of GeO2 doped PbO–B2O3–ZnO–Bi2O3 glasses

Cited by 9 publications

References 6 publications

Effect of Bi2O3 on structure and wetting studies of Bi2O3–ZnO–B2O3 glasses

Effect of Bi2O3 on structure and wetting studies of Bi2O3–ZnO–B2O3 glasses

Structure of Bi2O3-ZnO-B2O3 system low-melting sealing glass

Thermal Stability of Lead-Free Transparent Cloisonné Glazes

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