Composition dependence of crack formation probability in aluminoborosilicate glass

Morozumi, Hidekatsu; Yoshida, Satoshi; Matsuoka, Jun

doi:10.1016/j.jnoncrysol.2016.04.030

Cited by 7 publications

(6 citation statements)

References 27 publications

(36 reference statements)

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“…The indentation was made under a 1.96 N load in distilled water at room temperature. Consistent with a previous study, 17) a few drops of water were placed on the glass surface prior to indentation. The water environment was…”

Section: Methodsmentioning

confidence: 88%

“…The base glass composition in this study was 13Na 2 O 5K 2 O7MgO15Al 2 O 3 12B 2 O 3 48SiO 2 (mol %), as reported in a previous study. 8), 17) The B 2 O 3 content of the glass was varied from 0 to 16 mol % in 2 mol % steps (see Table 1). The B 2 O 3 component partially replaced the SiO 2 in the base glass composition.…”

Section: Methodsmentioning

confidence: 99%

“…However, we have since reported a faster ion-exchange in aluminoborosilicate (ALBS) glass than in SLS glass, although the B 2 O 3 contents exceeded 10 mol %. 17) How the composition affects the inter-diffusion coefficient of the Na + /K + ion-exchange reaction in multicomponent ALBS glass, and the role of B 2 O 3 in chemical strengthening, have been rarely reported. To elucidate these phenomena, the present study evaluates the effect of the B 2 O 3 content in ALBS glass on the ionexchange rate, and the role of the B 2 O 3 component in the Na + /K + ion-exchange mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Effect of B2O3 substitution for SiO2 in alkali aluminoborosilicate glasses on chemical strengthening

Morozumi

Yoshida

Matsuoka

2020

J. Ceram. Soc. Japan

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This study reports the strengthening effect of partially substituting SiO 2 with B 2 O 3 in aluminoborosilicate (ALBS) glasses. Specifically, it investigates how the B 2 O 3 addition affects the ion-exchange behavior of the glass. The base composition of ALBS glass is 13Na 2 O5K 2 O7MgO15Al 2 O 3 12B 2 O 3 48SiO 2 (mol %). In the prepared samples, the proportion of B 2 O 3 was varied from 0 to 16 mol %. The Na + /K + inter-diffusion coefficient of each sample was estimated from the K + ion concentration profile collected along the cross-section of each sample after immersion in molten KNO 3 at (Tg © 0.83) K (where Tg is the glass transition temperature) for 8 h. Adding only a small amount of B 2 O 3 drastically changed the K + ion concentration profile. In contrast, the activation energy of the Na + /K + inter-diffusion was almost independent of B 2 O 3 content. These results suggest that the B 2 O 3 incorporated in the glasses simply acts as a flux component. These findings are useful for designing compositions that strengthen ion-exchanged glasses.

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Section: Methodsmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of B2O3 substitution for SiO2 in alkali aluminoborosilicate glasses on chemical strengthening

Morozumi

Yoshida

Matsuoka

2020

J. Ceram. Soc. Japan

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“…Although the impact of composition on the glass structure in this system can be accurately predicted, the speciation of the network‐forming oxides is highly composition dependent . Any changes to the structural characteristics give rise to large differences in mechanical properties as a function of chemical composition, as it has been shown for sodium borosilicates, sodium aluminosilicates, sodium aluminoborates, and sodium aluminoborosilicates . Given these large variations within the quaternary Na 2 O–Al 2 O 3 –B 2 O 3 –SiO 2 system, this is an interesting system for further study in order to improve our understanding of the composition‐structure‐mechanical property relations.…”

Section: Introductionmentioning

confidence: 94%

Elasticity, hardness, and fracture toughness of sodium aluminoborosilicate glasses

Januchta

Bødker

et al. 2019

J Am Ceram Soc

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Due to an increasing demand for oxide glasses with a better mechanical performance, there is a need to improve our understanding of the composition-structuremechanical property relations in these brittle materials. At present, some properties such as Young's modulus can to a large extent be predicted based on the chemical composition, while others-in particular fracture-related properties-are typically optimized based on a trial-and-error approach. In this work, we study the mechanical properties of a series of 20 glasses in the quartenary Na 2 O-Al 2 O 3 -B 2 O 3 -SiO 2 system with fixed soda content, thus accessing different structural domains. Ultrasonic echography is used to determine the elastic moduli and Poisson's ratio, while Vickers indentation is used to determine hardness. Furthermore, the single-edge precracked beam method is used to estimate the fracture toughness (K Ic ) for some compositions of interest. The compositional evolutions of Vickers hardness and Young's modulus are in good agreement with those predicted from models based on bond constraint density and strength. Although there is a larger deviation, the overall compositional trend in K Ic can also be predicted by a model based on the strength of the bonds assumed to be involved in the fracture process. K E Y W O R D Scrack path, elastic moduli, fracture toughness, glass properties, Vickers hardness

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“…The local mechanical properties of glasses depend strongly on the glass composition and connectivity, the strain rate, and the indenter geometries used (Youn and Kang, 2005;Rouxel et al, 2014;Morozumi et al, 2016).…”

Section: Mechanical Testing Of Glassmentioning

confidence: 99%

Influence of Cooling Rate on Cracking and Plastic Deformation during Impact and Indentation of Borosilicate Glasses

et al. 2017

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The influence of a changing glass topology on local mechanical properties was studied in a multitechnique nanomechanical approach. The glass response against sharp contacts can result in structural densification, plastic flow, or crack initiation. By using instrumented indentation testing, the mechanical response was studied in different strain rate regimes for a sodium borosilicate glass (NBS) exhibiting altering structures due to varying processing conditions. Comparison with data from former studies and with literature data on other glass structures helped to elucidate the role of the borate and silicate subnetworks and to understand the overall mechanical properties of the mixed glass systems. A peculiarity of some of the NBS glasses tested in this study is the fact that the connectivity of the borate and silicate entities depends on the sample's thermal history. Although the influence on macroscopic material properties such as E and H is minor, the onset of cracking indeed is influenced by those structural changes within the glass. Rapidly quenched glass shows an improved crack resistance, which is even more pronounced at high strain rates. Studies on various processing conditions further indicate that this transition is closely related to the cooling rate around Tg. The strain rate dependence of cracking is discussed in terms of the occurrence of shear deformation and densification.

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Composition dependence of crack formation probability in aluminoborosilicate glass

Cited by 7 publications

References 27 publications

Effect of B<sub>2</sub>O<sub>3</sub> substitution for SiO<sub>2</sub> in alkali aluminoborosilicate glasses on chemical strengthening

Effect of B<sub>2</sub>O<sub>3</sub> substitution for SiO<sub>2</sub> in alkali aluminoborosilicate glasses on chemical strengthening

Elasticity, hardness, and fracture toughness of sodium aluminoborosilicate glasses

Influence of Cooling Rate on Cracking and Plastic Deformation during Impact and Indentation of Borosilicate Glasses

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