New insight into atmospheric alteration of alkali-lime silicate glasses

作者：Alloteau Fanny; Lehuede Patrice; Majerus Odile; Biron Isabelle; Dervanian Anais; Charpentier Thibault; Caurant Daniel

来源：Corrosion Science, 2017, 122: 12-25.

DOI：10.1016/j.corsci.2017.03.025

• Glass
• EDX
• Amorphous structures
• Atmospheric corrosion

A mixed alkali lime silicate glass altered in atmospheric conditions (80 degrees C/85%RH, Relative Humidity) for various lengths of time was characterized at all scales. The altered glass forms a hydrated solid phase bearing about 10 wt% of H2O in the form of Si-OH groups and molecular water. No alkali depletion was observed after ageing tests. Structural results from H-1, Na-23 and Si-29 MAS NMR point out the close proximity of Si-OH, H2O and Na+ species. This study gives new insight into the mechanisms of the atmospheric alteration, essential to conservation strategies in industry and cultural heritage.

• 出版日期2017-7-1
• 单位中国地震局