Density, elastic constants and indentation hardness of hydrous soda-lime-silica glasses

Kiefer, P.; Balzer, Robert; Deubener, Joachim; Behrens, Harald; Waurischk, Tina; Reinsch, Stefan; Müller, Ralf

doi:10.1016/j.jnoncrysol.2019.119480

Cited by 14 publications

(27 citation statements)

References 31 publications

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“…For this purpose, oxide glasses containing up to 8 wt% water were synthesized by melting at high pressure according to Behrens and Stuke (2003). In this way, water speciation and its influence on glass network structure could be investigated for numerous hydrous glasses including soda-lime-borate, sodium borosilicate (Bauer et al, 2017;Behrens et al, 2018), silicoborate (Balzer et al, 2019a), phosphate (Balzer et al, 2019b), and microscope slide glasses (Kiefer et al, 2019). Analogous studies on other soda-lime glasses have been published previously (Behrens and Stuke, 2003).…”

Section: Introductionmentioning

confidence: 85%

“…Commercial microscope slide glass (VEB, Ilmenau, Germany) of a previous study (Kiefer et al, 2019) was used. In particular, the sample 0W-MSG0 is the nominal dry glass (water content = 0.039 wt%), whereas the samples 3W-MSG500 and 6W-MSG500 are hydrous glasses, which has been, respectively mixed with nominal 3 and 6 wt% water and remelted in a internal pressure vessel at 500 MPa.…”

Section: Experimental Glass Synthesis and Glass Transition Temperaturementioning

confidence: 99%

“…In particular, the sample 0W-MSG0 is the nominal dry glass (water content = 0.039 wt%), whereas the samples 3W-MSG500 and 6W-MSG500 are hydrous glasses, which has been, respectively mixed with nominal 3 and 6 wt% water and remelted in a internal pressure vessel at 500 MPa. Synthesis conditions, determination of the water content and the resulted water speciation are reported in Kiefer et al (2019). The glass transition temperatures (T g ) are 812 K (0W-MSG0), 598 K (3W-MSG500), and 517 K (6W-MSG500) as measured by means of DTA (±5 K, TAG 24, Setaram, Caluire, France) and following the protocol given in Bauer et al (2015).…”

Section: Experimental Glass Synthesis and Glass Transition Temperaturementioning

confidence: 99%

“…Summing up, Figure 1 provides confidence in the applied DCB protocol within 10 orders of magnitude of v. Figure 2 compares crack propagation in the nominal dry microscope slide glass measured in air (red circles) and in vacuum (red diamonds) with that in the hydrous microscope slide glass containing 6 wt% water measured in air (blue circles) and in vacuum (blue diamonds). The composition for the hydrous glass 6W-MSG500 is calculated from the composition of the dry glass considering the amount of water measured by means of IR in Kiefer et al (2019). Data and keys: SLS: soda-lime silicate glass.…”

Section: Crack Propagation Ratesmentioning

confidence: 99%

“…Recently, measurements of density, molar volume of water, water speciation, elastic moduli, and hardness of water-bearing microscope slide glasses were reported (Kiefer et al, 2019). The present paper focuses on stable crack growth in ambient air and vacuum as well as on internal friction in these glasses.…”

Section: Introductionmentioning

confidence: 96%

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Crack Growth in Hydrous Soda-Lime Silicate Glass

et al. 2020

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Stable crack growth was measured for nominal dry and water-bearing (6 wt%) soda-lime silicate glasses in double cantilever beam geometry and combined with DMA studies on the effects of dissolved water on internal friction and glass transition, respectively. In vacuum, a decreased slope of logarithmic crack growth velocity versus stress intensity factor is evident for the hydrous glass in line with an increase of β-relaxation intensity indicating more energy dissipation during fracture. Further, inert crack growth in hydrous glass is found to be divided into sections of different slope, which indicates different water related crack propagation mechanism. In ambient air, a largely extended region II is observed for the hydrous glass, which indicates that crack growth is more sensitive to ambient water.

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Section: Introductionmentioning

confidence: 85%

Section: Experimental Glass Synthesis and Glass Transition Temperaturementioning

confidence: 99%

Section: Experimental Glass Synthesis and Glass Transition Temperaturementioning

confidence: 99%

Section: Crack Propagation Ratesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Crack Growth in Hydrous Soda-Lime Silicate Glass

et al. 2020

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Advancing the Mechanical Performance of Glasses: Perspectives and Challenges

et al. 2022

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in terms of deciphering structure-property relationships and the nonaffine nature of glass mechanical behavior, of computational and computer-assisted methods for accelerated materials discovery, and of physicochemical insight at glass formation and synthesis in unconventional types of materials. Despite this progress, significant questions remain as to the fundamental role of structural heterogeneity and its consequences for the predictability of mechanical properties underlying the many applications of glass. Today's challenge is to translate new understanding of the physics of disorder, glass chemistry, and surface mechanics into tools that enable future glass products with adapted elasticity, strength, and toughness. We will therefore consider fundamental advances in relation to emerging glass applications. While the aforementioned physical insights have mostly been obtained by computational simulation of model systems, and often through the examination of metallic glasses, we will here focus on glasses suitable for visible transparency, in particular silicate glasses, such as a representative of today's most prolific glass devices, ranging from ultrathin substrates to strong and visually transparent cover materials. We will further consider hybrid glasses and glass-like composite materials as emerging alternatives that may overcome the ubiquitous conflict between strength and toughness. [1] Glasses are materials that lack a crystalline microstructure and long-range atomic order. Instead, they feature heterogeneity and disorder on superstructural scales, which have profound consequences for their elastic response, material strength, fracture toughness, and the characteristics of dynamic fracture. These structure-property relations present a rich field of study in fundamental glass physics and are also becoming increasingly important in the design of modern materials with improved mechanical performance. A first step in this direction involves glass-like materials that retain optical transparency and the haptics of classical glass products, while overcoming the limitations of brittleness. Among these, novel types of oxide glasses, hybrid glasses, phase-separated glasses, and bioinspired glass-polymer composites hold significant promise. Such materials are designed from the bottom-up, building on structure-property relations, modeling of stresses and strains at relevant length scales, and machine learning predictions. Their fabrication requires a more scientifically driven approach to materials design and processing, building on the physics of structural disorder and its consequences for structural rearrangements, defect initiation, and dynamic fracture in response to mechanical load. In this article, a perspective is provided on this highly interdisciplinary field of research in terms of its most recent challenges and opportunities.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.202109029.

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On the Relationship between Water Adsorption and Surface Chemistry in Soda‐lime Silicate Glasses

Atila

2024

ChemPhysChem

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Understanding how the surface structure affects the bioactivity and degradation rate of the glass is one of the primary challenges in developing new bioactive materials. Here, classical and reactive molecular dynamics simulations are used to investigate the relationship between local surface chemistry and local adsorption energies of water on three soda‐lime silicate glasses. The compositions of the glasses, (SiO2)65−x(CaO)35(Na2O)x with x=5, 10, and 15, were chosen for their bioactive properties. Analysis of the glass surface structure, compared to the bulk structure, showed that the surface is rich in modifiers and non‐bridging oxygen atoms, which were correlated with local adsorption energies. The reactivity of the glasses is found to increase with higher Na2O content, attributed to elevated Na cations and undercoordinated species at the glass surfaces. The current work provides insights into the relationship between the surface structure, chemistry, and properties in these bioactive glasses and offers a step toward their rational design.

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Density, elastic constants and indentation hardness of hydrous soda-lime-silica glasses

Cited by 14 publications

References 31 publications

Crack Growth in Hydrous Soda-Lime Silicate Glass

Crack Growth in Hydrous Soda-Lime Silicate Glass

Advancing the Mechanical Performance of Glasses: Perspectives and Challenges

On the Relationship between Water Adsorption and Surface Chemistry in Soda‐lime Silicate Glasses

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