Field-Assisted Diffusion of K⁺, Rb⁺, Cs⁺, Ag⁺, and Tl⁺ Ions
in Sodium Silicate Glass

S. I. Sviridov, Z. G. Tyurnina, and N. G. Tyurnina

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences,
nab. Makarova, 2, St. Petersburg, 199034 Russia

e-mail: sviridov@isc.nw.ru

Received March 16, 2011

Abstract—The composition of the diffusion zone formed during the interaction between 20Na₂O 80SiO₂
glass and molten silver, rubidium, cesium, and thallium nitrates with and without imposition of a constant electric
field was determined using X-ray microanalysis. The interdiffusion coefficients and values of electrical mobility
were calculated, and the parameters of temperature dependence were determined. The electrical mobility was
almost independent of the size and chemical nature of a cation and was determined by the mobility of the cation
included into the initial glass.

Keywords: sodium silicate glass, molten salts, ion exchange, diffusion in electric field, Nernst–Einstein equation

DOI: 10.1134/S1087659612020095

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