Influence of water absorption by silicate glass on the strains in passivated Al conductor lines

Kuschke, W.-M.; Carstanjen, H. D.; Pazarkas, N.; Plachke, D.; Arzt, Eduard

doi:10.1007/s11664-998-0109-0

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References 19 publications

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“…Clear evidence has been reported in the literature for volume swelling, ɛ 0 , measured directly via dimension changes in the silica glass, and indirectly via stress generation within the glass. The swelling behavior has been determined by length 33 and curvature measurements on silica glass bars 34 and by X‐ray diffraction strain measurements 35 on silica glass. Gorbacheva and Zaoints 33 soaked fused silica prisms (25 × 5 × 5 mm) in water at 80°C for 20 months.…”

Section: Water Diffusion and Volume Expansion In Silicamentioning

confidence: 99%

Effect of Water Penetration on the Strength and Toughness of Silica Glass

et al. 2011

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International audienceIn this paper, we discuss the effect of water on the strength and static fatigue of silica glass. When a crack is formed in silica glass, the surrounding environment rushes into the crack; water then diffuses from the environment into the newly formed fracture surfaces to generate a zone of swelling around the crack tip. Because the swollen material is constrained from expanding by the surrounding glass, a zone of compressive stress is generated at the fracture surface around the crack tip. The results are similar to those found for transformation toughened zirconium oxide, with the exception that the transformation zone in silica glass grows with time, so that the effect gets progressively stronger. Using diffusion data from the literature, we show that the diffusion of water into silica glass can explain several significant experimental observations: the reported strengthening of silica glass by soaking in water at 88 degrees C; an increase in the slope of dynamic fatigue curve by prior exposure to water at 88 degrees C; the observation of a static fatigue limit in silica glass at very low values of the applied stress-intensity factor; and the observation of crack face displacements caused by water penetration into the glass at the crack tip

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