Mechanical properties of soda–lime–silica glasses with varying alkaline earth contents

Kilinc, Erhan; Hand, Russell J.

doi:10.1016/j.jnoncrysol.2015.08.013

Cited by 45 publications

(31 citation statements)

References 34 publications

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“…Soda-lime alumino-borosilicate glasses have found applications in many fields [1][2][3][4] and there is renewed interest in the structure and properties of these glasses. [5][6][7][8][9][10][11][12][13][14] In a recent paper, 15 the bulk structure of aluminoborosilicate glasses containing 10%-20% Ca and Na modifiers was explored using molecular dynamics simulations of systems containing~20 000 atoms. Over a dozen compositions and densities were studied.…”

Section: Introductionmentioning

confidence: 99%

Simulations of the surfaces of soda lime aluminoborosilicate glasses exposed to water

Garofalini

Urraca

2017

J Am Ceram Soc

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Molecular dynamics simulations of 7 compositionally different sodium calcium alumino‐borosilicate glasses showed formation of 4B and 5Al more consistent with experimental data without compromising the other structural features that match experimental results observed in recent simulations of these glasses. Analysis of the dry surfaces of these glasses show a lack of 4B in the top 5‐6 Å of the surface in comparison to the bulk concentration for all glasses and no 5Al. Upon exposure to water, the simulations show that the 3B in the top 5‐6 Å of the glasses are preferentially attacked, decreasing the number of B bonds to O originally from the glass, indicating a change in the glass network. Inclusion of all B–O bonds in the top 5‐6 Å (i.e., including O from water) shows a decrease in 3B but an increase in 4B that is consistent with NEXAFS analysis, which the simulations show are hydroxylated. There is an increase in the concentration of 3Al in the dry surface in comparison to the bulk, but exposure to water converts almost all of these 3Al to 4Al. Hydroxyl concentrations vary from 2.6/nm2 to 4.1/nm2, with SiOH and BOH dominating these surface hydroxyls. Upon exposure to water, network linkages to B are preferentially ruptured. This, and the preferential loss of the nonbridging oxygen sites attached to Na, provide atomistic evidence of the initial stages of removal of B and Na from glass surfaces exposed to water.

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Section: Introductionmentioning

confidence: 99%

Simulations of the surfaces of soda lime aluminoborosilicate glasses exposed to water

Garofalini

Urraca

2017

J Am Ceram Soc

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“…The Tg measured depends on heating rate, in Figure 99 the heating rate was at 10°C/min. No crystallisation peaks were observed and a Tg was similar to those found in the literature for SLS [261] and Boro type glasses [321]. The composition was close to the nominal value as shown through XRF and density measurements which are commensurate with those found in literature [261] and through the SciGlass database [338].…”

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confidence: 81%

“…Raman spectra of base and doped glasses are shown in Figure 57. Each trace is composed of five main peaks, consistent with other float and soda lime silica systems [261,262]. Samples doped with Nb2O5 and MoO3 have an additional peak highlighted by…”

Section: Raman Spectroscopysupporting

confidence: 52%

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Effects of d0 and s2 cations on optical properties of silicate glasses

Allsopp¹

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In partial fulfilment of its requirements for The Degree of Doctor of Philosophy 2 Declaration I hereby declare, that the thesis entitled 'Effects of d 0 and s 2 cations on optical properties of silicate glasses' is a result of my original work and investigation. None of the results presented in the manuscript have been lifted from any other sources and legitimate references are presented where necessary. Name:Signature:The copyright of this thesis rests with the author and no quotations from it or information derived from it may be published without prior written consent of the author. 3 Published work and conferences Aspects of the work described in the thesis were published in:• Optical and structural properties of d 0 ion doped silicate glasses for photovoltaic applications. B.

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“…The effect of alkaline earth oxide additives on the mechanical properties of SLS glasses were previously examined using micro-Vickers and four-point bend testing. The mechanical properties of SLS glasses with MgO-SiO 2 and CaO-SiO 2 deteriorate owing to the increased network depolymerization in their structures [7]. The objective of the present study, therefore, was to investigate the effects of alkali oxide powders (peanut shell powder) on the mechanical properties of SLS glasses, determined by using micro-Vickers hardness tester and an ultrasonic flaw detector.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Soda-Lime-Silica Glasses with Variable Peanut Shell Contents

et al. 2017

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In this study, the mechanical properties of soda-lime-silica glasses were investigated by using micro-Vickers indentation tests, while varying the amount of peanut shell powder added to the glass. Peanut shell powder was obtained by grinding peanut shells. It was added as a dopant to glass at 0.5-5 wt.%, with the final glass samples being produced by melting. Peanut shell addition had led to a decreased density of the soda-lime-silica glasses, and X-ray diffraction data of the peanut shell-doped soda-lime-silica glasses indicated the presence of two crystalline phases, namely, anorthite (Na0.45(Ca0.55Al1.55Si2.45O8) and magnesium aluminum silicate (MgAl2Si3O10)6. The Young's modulus values of the soda-lime-silica glasses increased along with the amount of peanut shell powder added. Peanut shell addition to the soda-lime-silica glasses has also caused increased hardness. Fracture toughness values of these glass samples were in the range of 0.91-1.04 MPa m 1/2 . Thus, the mechanical properties (e.g. E and KC) of soda-lime-silica glasses could be enhanced through peanut shell addition.

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Mechanical properties of soda–lime–silica glasses with varying alkaline earth contents

Cited by 45 publications

References 34 publications

Simulations of the surfaces of soda lime aluminoborosilicate glasses exposed to water

Simulations of the surfaces of soda lime aluminoborosilicate glasses exposed to water

Effects of d0 and s2 cations on optical properties of silicate glasses

Mechanical Properties of Soda-Lime-Silica Glasses with Variable Peanut Shell Contents

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