The Leaching of Sodium Containing Glasses : Ion Exchange or Diffusion of Molecular Water ?

Effect of organic acid vapors on the alteration of soda silicate glass

“…To compensate for the loss of monovalent cations, H + or H 3 O + was incorporated leading to the formation of silanols. The nature of the H-species from the water which exchanges with the alkali ions remains a matter of discussion [10,[48][49][50][51]. The atom ratio H/Na in the leached layer is generally used as a basis for the interpretation.…”

Hydrogen–sodium interdiffusion in borosilicate glasses investigated from first principles

“…This would be more difficult with a pure sodium aluminosilicate glass, in which the sodium cations bonded to AlO 4 tetrahedra are much more strongly retained to the glass network [24,25]. When the interdiffusion mechanism involves a network modifier, a silanol group appears by reaction with the nonbridging oxygen termination that retained the cation.…”

Glasses on the seabed: surface study of chemical corrosion in sunken Roman glasses

“…BSi-O À Na þ þ BSi-OH $ BSi-OH þ BSi-O À Na þ Smets and Lommen [5] have developed the second model, that can be described as: BSi-O À Na þ þ H 2 O ! BSi-OH þ Na þ þ OH À Also CO 2 and SO 2 affect glass behavior during corrosion.…”