Stress corrosion of organosilicate glass films in aqueous environments: Role of pH

Autor:	F. Sinapi, C. Elia, T. Fournier, Youssef Travaly, Francesca Iacopi
Rok vydání:	2008
Předmět:	Aqueous solution Materials science Mechanical Engineering Metallurgy Fracture mechanics Condensed Matter Physics Corrosion Amorphous solid Stress (mechanics) Cracking Mechanics of Materials Slurry General Materials Science Composite material Thin film
Zdroj:	Journal of Materials Research. 23:862-868
ISSN:	2044-5326 0884-2914
Popis:	Subcritical cracking of thin glass films caused by stress-corrosion phenomena cannot be neglected when it comes to application and manufacturing processes that involve exposure to aqueous environments. A protocol is introduced to allow for a quantitative study of stress corrosion through channel cracking experiments. By this method, an exponential dependence of the crack propagation rate on the pH of the aqueous environment is revealed. Therefore, this behavior should be accounted for through the use of an appropriate pre-exponential factor in the expression of channel cracking rate. This factor should reflect the reduced crack resistance of the glass film caused by the weakening of the silica bonds behind the crack tip in the aqueous environment. A direct comparison between commercial slurries and reference solutions confirms that the crack resistance is a function of the pH of the ambient.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bfdf8546f32bae0c2467ad3d85fb3adf https://doi.org/10.1557/jmr.2008.0108 Zobrazit plný text záznamu Full text from SpringerLink