Compositional effects on mechanical properties, viscosity, and crystallization of (Li2O, B2O3, MgO)-Al2O3-SiO2 glasses

Zu, Qun; Huang, Sanxi; Zhang, Yan; Huang, Shiyang; Liu, Jingsong; Li, Hong

doi:10.1016/j.jallcom.2017.08.294

Cited by 24 publications

(3 citation statements)

References 35 publications

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“…The viscosities of 16 different composition ratios of H13 were measured at 1300 and 1400 °C, as shown in Table 2 . To better describe the viscosity properties, the viscosity modulus (Mη) was introduced, 56 , 57 which is defined as where MSiO 2 , MAl 2 O 3 , and so forth represent the molar fractions of the corresponding oxides.…”

Section: Resultsmentioning

confidence: 99%

Viscosity Simulation of Glass Microfiber and an Unusual Air Filter with High-Efficiency Antibacterial Functionality Enabled by ZnO/Graphene-Modified Glass Microfiber

et al. 2022

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The current global pandemic of new coronary pneumonia clearly reveals the importance of developing highly efficient filtration and fast germicidal performance of multifunctional air filters. In this study, a novel air filter with a controllable morphology based on the rod-like to flower-like zinc oxide/graphene-based photocatalytic composite particles loaded on glass microfiber was prepared by one-step microwave rapid synthesis. The multifunctional air filter shows the following special functions: the 10 mg·L –1 organic pollutant solution RhB was completely degraded within 2 h under a 500 W xenon lamp, and also 99% of Escherichia coli and Staphylococcus aureus were inactivated under a 60 W light-emitting diode lamp. Furthermore, after introducing the controllable morphology zinc oxide/graphene-based photocatalytic composite particles, the filtration efficiency of the multifunctional air filter was also kept at the same level (99.8%) as the one without any addition, indicating no loss of high-efficiency filtration while obtaining the rapid bactericidal function. The rapid antibacterial principle of the multifunctional air filter has also been proposed through the UV–vis spectroscopies, photoluminescence, and electron-spin resonance spectrum. The zinc oxide/graphene-based photocatalytic composite particles tightly coated on the glass microfiber surface could increase the active sites by changing the morphology of zinc oxide and, in the meantime, promote the separation of zinc oxide photo-generated electron–hole pairs to improve the rapid sterilization ability of the multifunctional air filters. In addition, an empirical formula to evaluate the relationship between the composition, viscosity, and viscosity modulus of glass microfiber was proposed by testing the viscosity of glass microfiber composed of 14 different compositions at 1300 and 1400 °C, which can be used as a criterion to evaluate the production technology of glass microfiber filters.

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Section: Resultsmentioning

confidence: 99%

Viscosity Simulation of Glass Microfiber and an Unusual Air Filter with High-Efficiency Antibacterial Functionality Enabled by ZnO/Graphene-Modified Glass Microfiber

et al. 2022

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“…LAS glass-ceramic is often used in applications that require minimal thermal expansion at a higher temperature such as cooktop panels and high-temperature furnace windows [8][9][10]. The zero or negative CTE of LAS glass-ceramic is possessed by crystalline phases with highly anisotropic CTE, named βquartz [11,12], β-spodumene [13][14][15] and β-eucryptite [16,17]. β-spodumene is a solid solution derived from keatite with CTE ranging between 0.5-1.0 × 10 − 6 °C − 1 [18,19].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Isothermal Treatment on the Structural, Microstructure and Physical Properties of Li2O-Al2O3-SiO2 Glass-Ceramic

Lutpi

Mohamad

Abdullah

2020

Preprint

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The present work aims to investigate the effects of isothermal treatment on the structural, microstructure and physical properties of Li2O-Al2O3-SiO2 glass-ceramic. Sintering temperature plays a major role in producing the desired lithium aluminosilicate (LAS) glass-ceramic crystalline phases. This work also aims to achieve a low thermal expansion coefficient β-spodumene (LiAlSi2O6) crystalline phase with improved density and lower porosity, which can be useful for the applications with thermal shock properties. The LAS glass-ceramic was fabricated by the melt-quenching technique at 1550 °C for 5 h before being isothermally sintered at an elevated temperature of 900 to 1200 °C for 30 min. The evolution of LAS glass-ceramic crystalline phases was identified using differential thermal analysis and the β-spodumene exothermic peak appeared at 999 °C. Based on the X-ray diffraction results, the complete transformation of β-spodumene from high-quartz solid solution (β-quartz) occurred at 1000 °C. However, the sintering temperature did not change the crystalline phase when sintered above 1000 °C, but the lattice parameter of the crystal structure was slightly altered. Moreover, it was observed that the LAS glass-ceramic grain size increased with temperature, whereby the smallest average grain size recorded (0.61 µm) for LAS glass-ceramic sintered at 1100 °C. Meanwhile, the fully densified LAS glass-ceramic at 1100 ° C was measured at 2.47 g/cm3 with 0.52% porosity. The isothermal treatment at elevated temperature indicated that sintering at 1100 °C provided a denser, less porous, and small average grain size which is preferred for thermal shock resistance applications.

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“…3,4 Many studies have been carried out on the glass systems for developing more suitable glass-ceramics to improve their performance. Among various glass systems, MgO-Al 2 O 3 -SiO 2 (MAS) glass-ceramics containing a Mg-Al spinel (MgAl 2 O 4 ) crystalline phase are thought to provide many excellent properties, including good chemical durability, 5,6 thermal stability, 7,8 high mechanical strength, [9][10][11] high strain point temperature, high surface smoothness 12 and good transparency in the visible range, 13,14 which makes MAS glass-ceramics potential candidates for flat panel displays and photovoltaic substrates. 15 However, since the nucleation and crystallization of MAS system is complicated, the progress in developing these kinds of glassceramics has been rather slow.…”

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confidence: 99%

Influence of ZnO and Heat Treatment Process on the Physical and Optical Properties of MgO-Al₂O₃-SiO₂Glass-Ceramics

Yuan²,

Wang

et al. 2018

ECS J. Solid State Sci. Technol.

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The influences of adding ZnO and the use of specific heat-treatment schedules on MgO-Al 2 O 3 -SiO 2 (MAS) glass-ceramic properties including crystallization, micromorphology, optical transmittance and Vickers-hardness were investigated. The XRD analysis proved that MgAl 2 O 4 and Al 2 ZnO 4 spinel are the major crystalline phases formed in the studied MgO-Al 2 O 3 -SiO 2 -ZnO (MASZ) glass ceramics. The addition of ZnO facilitated the crystallization of the MAS glass and resulted in a uniform and compact microstructure. The homogeneous distribution of microcrystals with average grain size less than 100 nm in the MASZ glass-ceramics contributed to the improvement of the corresponding transmittance in the visible range. In addition, the orthogonal heat-treatment experiment indicated that the crystallization time and nucleation time have a dominant effect on the microhardness of glass-ceramics, followed by decreasing effects of crystallization temperature and nucleation temperature.

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Compositional effects on mechanical properties, viscosity, and crystallization of (Li2O, B2O3, MgO)-Al2O3-SiO2 glasses

Cited by 24 publications

References 35 publications

Viscosity Simulation of Glass Microfiber and an Unusual Air Filter with High-Efficiency Antibacterial Functionality Enabled by ZnO/Graphene-Modified Glass Microfiber

Viscosity Simulation of Glass Microfiber and an Unusual Air Filter with High-Efficiency Antibacterial Functionality Enabled by ZnO/Graphene-Modified Glass Microfiber

Investigation of Isothermal Treatment on the Structural, Microstructure and Physical Properties of Li2O-Al2O3-SiO2 Glass-Ceramic

Influence of ZnO and Heat Treatment Process on the Physical and Optical Properties of MgO-Al₂O₃-SiO₂Glass-Ceramics

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Compositional effects on mechanical properties, viscosity, and crystallization of (Li2O, B2O3, MgO)-Al2O3-SiO2 glasses

Cited by 24 publications

References 35 publications

Viscosity Simulation of Glass Microfiber and an Unusual Air Filter with High-Efficiency Antibacterial Functionality Enabled by ZnO/Graphene-Modified Glass Microfiber

Viscosity Simulation of Glass Microfiber and an Unusual Air Filter with High-Efficiency Antibacterial Functionality Enabled by ZnO/Graphene-Modified Glass Microfiber

Investigation of Isothermal Treatment on the Structural, Microstructure and Physical Properties of Li2O-Al2O3-SiO2 Glass-Ceramic

Influence of ZnO and Heat Treatment Process on the Physical and Optical Properties of MgO-Al2O3-SiO2Glass-Ceramics

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Influence of ZnO and Heat Treatment Process on the Physical and Optical Properties of MgO-Al₂O₃-SiO₂Glass-Ceramics