Water vapor interaction with borosilicate glass
| Autor: | Miguel Avendano, Linda R. Manzanilla-Naim, Rene Asomoza-Palacio, Yuriy Kudriavtsev, G. Ramirez |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Hydrogen Borosilicate glass Diffusion Analytical chemistry chemistry.chemical_element 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Condensed Matter::Disordered Systems and Neural Networks 01 natural sciences Chemical reaction Ion chemistry Aluminosilicate 0103 physical sciences General Materials Science Surface layer 0210 nano-technology Water vapor |
| Zdroj: | Solid State Ionics. 321:122-125 |
| ISSN: | 0167-2738 |
| DOI: | 10.1016/j.ssi.2018.04.015 |
| Popis: | Hydration of borosilicate glass (Corning Pyrex glass) in isotopic water H218O vapor was performed at different temperatures. The depth distributions of 1H and 18O in the borosilicate glass measured by the Time-of-Flight Secondary Ion Mass-Spectrometry (TOF-SIMS) were found to be drastically different. The activation energies for the 18O diffusion and for the glass hydrogenation were measured experimentally. The depth distribution of the 18O isotope was described well by the complementary error function, whereas the depth distribution of hydrogen represented the so-called “S-curve”. A similar hydrogen distribution was observed earlier in hydrated natural aluminosilicate glasses (obsidians). This led us to the conclusion that the hydrogenated layer was formed due to a solid state chemical reaction between protons and the glass network. The protons were the result of another solid state chemical reaction between the absorbed water molecules and glass network occurring in a top surface layer ( |
| Databáze: | OpenAIRE |
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