Effect of the Structure of Lithium-Silicate Glasses on the Mechanical Properties of Transparent Glass-Ceramic Materials

Саввова, О. В.; Topchyi, V. L.; Babich, E. V.; Belyakov, R. O.

doi:10.1007/s11223-019-00034-3

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The formation of the nano-and submicron structure of glassceramic materials is extremely important to ensure a high speed of wave propagation in the material. The finer the grains in the struc- ture of the material, the more often barriers are encountered at the grain boundary on the path of gliding dislocations, and therefore higher stresses are required for plastic deformation of the material already at its initial stages [14]. Nanocrystalline materials have high damping properties, since, due to the differences in the elastic moduli of the grains themselves and the boundary layers, elastic vibrations propagate inhomogeneously and significantly dissipate.…”

Section: Investigation Of Changes In the Structure Of Glass-ceramic M...mentioning

confidence: 99%

Influence of the Nano- and Submicron Structure of Magnesium–Aluminosilicate Glasses on the Crack Resistance of High-Strength Glass-Ceramics

2022

Nanosistemi, Nanomateriali, Nanotehnologii

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The main directions of the development of glass-ceramic materials for technical purposes, which are distinguished by a complex of high physicochemical, technological and operational properties, reduced cost and can be obtained using energy-saving and resource-saving technologies, are analysed. A detailed analysis of the state of development of cordierite glassceramic materials and the principles of their design made it possible to establish the possibility of developing high-strength materials on their base characterized by the formation of a dissipative nanostructure in the process of directed crystallization. The composition of magnesiumaluminosilicate glass is optimized by introducing a combined crystallization catalyst (ZrO 2 , TiO 2 , Sb 2 O 5 , ZnO, CeO 2 , P 2 O 5 ) to ensure the nucleation process and the formation of crystalline phases in the low-temperature range as well as the formation of a sitalized structure of a glass-ceramic material by the phase separation mechanism. As found, ensuring phase separation (800-850С) by the spinodal mechanism for experimental magnesium-aluminosilicate glass in the pre-crystallization period is an important stage in the formation of solid solutions with a high-temperature quartz structure in the low-temperature region (850-900С), spinel crystallization (900-1000С), -cordierite (980-1050С) and recrystallization of -cordierite to mullite at 1050-1100С. The main conditions for the formation of a self-organized sitalized nano-and submicron structure of glass-ceramic materials based on mullite are determined as follow: the content of phase-forming oxides (MgO, Al 2 O 3 , SiO 2 ) is of 87.0 wt.%; type and content of crystallization catalysts (TiO 2 , ZrO 2 , СеО 2 , P 2 O 5 ) is of 8.0 wt.% and content of modifying additives (SrO, CaO, B 2 O 3 ) is of 5.0

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Section: Investigation Of Changes In the Structure Of Glass-ceramic M...mentioning

confidence: 99%

Influence of the Nano- and Submicron Structure of Magnesium–Aluminosilicate Glasses on the Crack Resistance of High-Strength Glass-Ceramics

2022

Nanosistemi, Nanomateriali, Nanotehnologii

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“…For citation: Shekhovtsov V.V., Skripnikova N.K., Semenovykh M.A., Bakshanskii R. Yu Многочисленные исследования по получению стеклокристаллических материалов показывают, что в качестве исходных материалов возможно использовать промышленные отходы и природное сырье [1][2][3]. В работе [4] выявлены особенности физико-химических и теплофизических свойств расплавов и стекол в системе CaO-MgO-FeO-Al2O3-SiO2, позволяющие наиболее эффективно оптимизировать технологические параметры синтеза стеклокристаллических метасиликатных материалов пироксенового и волластонитового состава с заданным химическим составом и с требуемыми эксплуатационными свойствами.…”

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Plasma-assisted production of glass-ceramic materials

Шеховцов

Skripnikova

Semenovykh

et al. 2021

Vestnik Tomskogo gosudarstvennogo arhitekturno-stroitelnogo uni

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The paper presents the experimental results of the plasma-assisted production of glass-ceramic materials. The dependences are suggested for the main physical and mechanical properties (flexural and compressive strengths, density, thermal expansion coefficient) of the end products and the mixture components. The accumulative recrystallization centers of the anorthite phase are detected. The inclusions of this phase randomly locate on the surface of the melting products and resemble dendritic microinclusions up to 90 nm in size. The properties of the glass-ceramic materials are described using conventional techniques.

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Anorthite-reducing glass-crystalline materials synthesized in plasma

Шеховцов

Skripnikova

Semenovykh

et al. 2021

J. Phys.: Conf. Ser.

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The paper presents the experimental results of the glass-ceramic material production using the low-temperature plasma. The dependences are suggested for the main physical-and-mechanical properties (compressive and flexural strengths, density, linear thermal expansion coefficient) of products and the mixture compositions. The centers of secondary recrystallization are identified for the anorthite phase (CaAl2Si2O8). These inclusions chaotically locate on the surface of the synthesis products and resemble dendritic microinclusions up to 90 nm in size. A comparative analysis is given to the properties of glass-ceramic materials produced by the low-temperature plasma and traditional methods.

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Effect of the Structure of Lithium-Silicate Glasses on the Mechanical Properties of Transparent Glass-Ceramic Materials

Cited by 3 publications

References 2 publications

Influence of the Nano- and Submicron Structure of Magnesium–Aluminosilicate Glasses on the Crack Resistance of High-Strength Glass-Ceramics

Influence of the Nano- and Submicron Structure of Magnesium–Aluminosilicate Glasses on the Crack Resistance of High-Strength Glass-Ceramics

Plasma-assisted production of glass-ceramic materials

Anorthite-reducing glass-crystalline materials synthesized in plasma

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