Sol-gel synthesis of photostructured gold-containing lithium silicate glasses

Сычева, Г. А.

doi:10.1134/s1087659611050142

Cited by 9 publications

(9 citation statements)

References 4 publications

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“…The charge for the glasses containing Ag and Au was prepared by the sol gel method [8][9]. The glass compositions are listed in the table.…”

Section: Methodsmentioning

confidence: 99%

“…It was assumed [1] that the photosensitive metal crystals, on which the main non metallic phase nucleates afterwards, are formed according to the scheme of crystals per unit sample volume were counted at the depths x characterized by the same irradiation dose [2,7]. These depths were found by calculating the mass (μ M ) and linear (μ L ) X ray attenuation factors, and the half attenuation lengths Δ were calculated [2,[7][8][9][10]. The attenuation factors μ M and μ L are sim ilar for the compositions under study; therefore, the half attenuation lengths Δ differ only slightly.…”

Section: Technique For Studying the Kinetics Of Heterogeneous Crystalmentioning

confidence: 99%

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Effect of X-rays on crystal nucleation in photostructured glasses of a lithium-silicate system

2012

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Crystal nucleation parameters have been determined in a wide range of compositions of photo structured glasses of the lithium-silicate system (23.40-45.00 mol % Li 2 O) for homogeneous and heteroge neous nucleation. The homogeneous nucleation occurred in glasses without photosensitive additives and with photosensitive gold-silver additives (0.05 wt % above 100%) without irradiation; the heterogeneous nucle ation occurred in glasses with photosensitive gold-silver additives under X ray irradiation. The ranges of the compositions are reported in which the effect of catalyzing irradiation is reversed (suppressing crystallization according to the autocatalytic mechanism) under certain conditions. Keywords: photostructured glasses of lithium-silicate system, heterogeneous nucleation on photostructured Ag and Au impurities, effect of X rays on crystal nucleation

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“…The charge for the glasses containing Ag and Au was prepared by the sol gel method [8][9]. The glass compositions are listed in the table.…”

Section: Methodsmentioning

confidence: 99%

Section: Technique For Studying the Kinetics Of Heterogeneous Crystalmentioning

confidence: 99%

Effect of X-rays on crystal nucleation in photostructured glasses of a lithium-silicate system

2012

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“…In order to prepare maximally uniform glass sam ples, the sol gel synthetic method was used [17,18]. According to the chemical analysis data, the composi tion of the prepared glass is 33.5Li 2 O ⋅ 66.5SiO 2 (mol %) with the addition of 0.03Au (wt %) overhead of 100% [17].…”

Section: Methodsmentioning

confidence: 99%

“…According to the chemical analysis data, the composi tion of the prepared glass is 33.5Li 2 O ⋅ 66.5SiO 2 (mol %) with the addition of 0.03Au (wt %) overhead of 100% [17]. The original samples had a pale purple color.…”

Section: Methodsmentioning

confidence: 99%

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The effect of gold nanoparticles on crystallization processes in photostructured lithium-silicate glass

et al. 2013

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The surface plasmon resonance of gold nanoparticles (NP) is investigated, allowing their sizes before and after X ray irradiation to be determined. It is shown that X ray irradiation results in the growth of NP, while their heat treatment results in their reduction. The quasi atomic structure of gold NP is assumed, leading to the entrapment of electrons on unoccupied orbitals upon X ray irradiation. An explanation of the crystallization and amorphization of photostructured glass in the lithium silicate system is suggested based on the fact that gold NP are negatively charged.

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Sintering properties of sol–gel derived lithium disilicate glass ceramics

Wang

Ning

2018

J Sol-Gel Sci Technol

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Lithium disilicate (Li2Si2O5) glass-ceramics were fabricated through two sol-gel methods: the nitrate route and the alkoxide route. Thermal analysis revealed different crystallization processing of two gel-derived powders. Li2Si2O5 powders were obtained after heat treatment at 800 °C. These powders were pressed and pressureless sintered under 900-1030 °C. Microstructure of sintered samples revealed the grain size and morphology of Li2Si2O5 ceramics. Although grain size in both samples increased with increasing sintering temperature, samples from the alkoxide route derived powders had more uniform grain size and pore distribution. In addition, open porosity decreased in both samples with increasing sintering temperature. Unlike familiar nucleation that resulted in grain growth mechanism, the Li2Si2O5 particles developed into irregular large size grains at first, and then grew into rod-shaped grains.

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Sol-gel synthesis of photostructured gold-containing lithium silicate glasses

Cited by 9 publications

References 4 publications

Effect of X-rays on crystal nucleation in photostructured glasses of a lithium-silicate system

Effect of X-rays on crystal nucleation in photostructured glasses of a lithium-silicate system

The effect of gold nanoparticles on crystallization processes in photostructured lithium-silicate glass

Sintering properties of sol–gel derived lithium disilicate glass ceramics

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