الفهرس 
Nature of the glassOnly 14 pages are availabe for public view
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Abstract
The electrical conductivity behaviour of sodaflime silica
glass tubes was studied during field-assisted ion exchange with
molten salts of divalent cations. The molten salts used were
ZnC12, SnC12, PbBr2 3 PbC12 and mixtures of PbC12/
CaC12, PbC12/ CaC12 and ZnC12 / BaC12. The field
assisted ion exchange was carried out at constant temperature
and potential in every experiment, while the current across the
cell was recorded. The effect of the type of the metal cation
exchanged, temperature and potential of exchange on the
electrical conductivity of the glass were studied.
The chemical composition of the exchanged glass surface was
examined by several nondestructive techniques, to determine the
concentration and penetration depth of the ion-exchanged
cations. The techniques include Energy DispersiveX-ray Analysis
(EDXA), X-ray fluorescence (XRF) and Rutherford Back-Scattering
(RBS) . The surface ofc some glass tubes was photographed to
illustrate the effect of ion-exchange process on the glass
surf ace.
This work was conducted to evaluate the phenomenolgoical model
proposed by Hong and Cooper for divalent metal conductivity in
soda-lime glass during field-assisted ion exchange, to study the
factors which control the exchange process and to study the
relation between the change in chemical composition of the glass
surface and bulk conductivity of the glass during field-assisted
ion exchange.