Effect of Water Corrosion on Cracks and Vickers Imprints in Glass

Benbahouche, Saci; Brient, A.; Rouxel, Tanguy; Sangleboeuf, Jean‐Christophe

doi:10.1007/s10704-012-9712-4

Cited by 9 publications

(6 citation statements)

References 14 publications

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“…In order to analyze crack growth in detail, the propagation time (t−δ) was calculated by subtracting the delay δ from the acquisition time t for each crack. Figure 3 primarily shows that the crack length strongly depend on the H 2 O partial pressure, which has been noted already in previous studies (Benbahouche et al, 2012;. After 55 s, cracks have reached about 70-120 µm under dry conditions, whereas in the humid environment, crack lengths in the range 100-160 µm were detected.…”

Section: Resultssupporting

confidence: 82%

Automated Analysis of Slow Crack Growth in Hydrous Soda-Lime Silicate Glasses

et al. 2020

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To explore the impact of ambient and structural water on static fatigue, the initiation and growth of 3279 Vickers induced median radial cracks were automatically recorded and analyzed. We find that humidity is more efficient in initiating cracks and promoting their growth than water, which is dissolved in the glass structure. In particular for slow crack growth (< 3 × 10 −6 m s −1), tests in dry nitrogen showed a considerable decrease in the crack growth exponent with increasing water content of the glasses. On the other hand, if tests were performed in humid air, the crack growth exponent was independent of the water content of the hydrous glasses, while stress intensity decreased slightly. These observations indicate that water promotes the processes at the crack-tip regardless of its origin. However, ambient water is more efficient.

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Section: Resultssupporting

confidence: 82%

Automated Analysis of Slow Crack Growth in Hydrous Soda-Lime Silicate Glasses

et al. 2020

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“…In contrast to silicate glasses, P‐O‐P network in phosphate glasses can be attacked by water much more easier due to their lower bond energy . Thus, stress‐corrosion and tribo‐corrosion theory also has been used to explain those water aggravated damage behaviors in phosphate glass.…”

Section: Introductionmentioning

confidence: 72%

“…In contrast to silicate glasses, P-O-P network in phosphate glasses can be attacked by water much more easier due to their lower bond energy. 21,22 Thus, stress-corrosion and tribo-corrosion theory also has been used to explain those water aggravated damage behaviors in phosphate glass. For instance, it was reported that the indentation area on PL glass would further collapse after immersing in pure water.…”

Section: Introductionmentioning

confidence: 99%

On the effect of tribo‐corrosion on reciprocating scratch behaviors of phosphate laser glass

et al. 2017

Int J of Appl Glass Sci

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Using a reciprocating ball‐on‐flat tribometer, the friction and wear behaviors of phosphate laser (PL) glass were investigated in dry air and liquid water to reveal the effect of tribo‐corrosion on the reciprocating scratch behaviors of PL glass. In this regard, material removal and (sub)surface cracking of PL glass were studied by comparing the absence/presence of water under reciprocating scratch conditions. It was found that regardless of applied load conditions, material removal volume in water was higher than the test in dry air, suggesting that the tribo‐corrosion (shear stress‐assisted hydrolysis) accelerated the material removal of PL glass in water. In contrast, surface and subsurface cracking at the contact region of PL glass in water were weaker than the test in dry air, and stress‐corrosion and tribo‐corrosion alone cannot explain the suppressed cracking in water. It was suggested that liquid water acted as a lubricant during friction, which reduced the shear stress on glass substrate to weaken glass cracking. The results provide new insights into the scratch behavior of glass materials, which would be useful in understanding the contact damage mechanism of glass materials in the presence of water.

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“…However, the origin of this strengthening effect is open to debate. The mechanisms proposed in the literature can be categorized into four groups: (a) introduction of compressive stresses in the hydrated layer, 11,18,24–28 (b) passivation of tensile stresses around flaws, 13,30,31 (c) alteration of the fracture resistance of the surface, 32 and (d) blunting of crack tips 29,33 . These hypotheses are based on fracture mechanics models, where the fracture strength of a material depends on its fracture toughness, the length of the critical flaw (or crack), the geometry and location of the defect, and eventually the presence of residual stresses.…”

Section: Introductionmentioning

confidence: 99%

“…But it is unclear how a surface treatment that influences only a hundred nanometers of the surface can have such drastic influence on the mechanical response on the micro‐ and macro‐scale. It has also been proposed that the increase in strength after water soaking may be due to flaw alteration including crack tip blunting due to the reprecipitation of dissolved glass 13,30,31 . Because flaws act as stress concentrators, the crack tip blunting could induce the strengthening effect 29,33 .…”

Section: Introductionmentioning

confidence: 99%

Effects of acid leaching treatment of soda‐lime silicate glass on crack initiation and fracture

et al. 2021

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Water or acid soaking surface treatments have been shown to increase the mechanical strength of soda‐lime silicate (SLS) glasses. This increase in strength has traditionally been attributed to effects related to residual stress or changes in fracture resistance. In this work, we report experimental data that cannot be explained based on the existing knowledge of glass surface mechanics. In dry environments, annealed and acid‐leached SLS surfaces have comparable crack initiation stress and fracture stress as measured by Hertzian indentation and biaxial bending tests, respectively. Yet, in the presence of humidity, acid‐leached surfaces have higher failure stress than the annealed surfaces. This apparent enhancement in the crack resistance of the acid‐leached surface of SLS glass in humid environments supports the hypothesis that acid‐leached surface chemistry can lower the transport kinetics of molecular water to critical flaws.

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Effect of Water Corrosion on Cracks and Vickers Imprints in Glass

Cited by 9 publications

References 14 publications

Automated Analysis of Slow Crack Growth in Hydrous Soda-Lime Silicate Glasses

Automated Analysis of Slow Crack Growth in Hydrous Soda-Lime Silicate Glasses

On the effect of tribo‐corrosion on reciprocating scratch behaviors of phosphate laser glass

Effects of acid leaching treatment of soda‐lime silicate glass on crack initiation and fracture

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