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ELECTRODE FUNCTION ( P H RESPONSE) OF THE SODA‐SILICA GLASSES *
Author(s) -
Rynders Gerald F.,
Grauer Oscar II.,
Hubbard Donald
Publication year - 1948
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1948.tb14236.x
Subject(s) - saturated calomel electrode , durability , glass electrode , electrode , materials science , silica glass , mineralogy , analytical chemistry (journal) , composite material , chemistry , electrochemistry , reference electrode , chromatography
A bstract A scries of Na 2 O‐SiO 2 glasses was studied for durability, hygroscopicity, glass‐electrode function, and apparent response to [Na + ]. These glasses showed three distinct regions of durability characteristics at pH 4.6: (1) below 81% of SiO 2 , where the glass was carried into solution; (2) between 81 and 89.5% of SiO 2 , where differential solution of the constituents of the glass left a swollen silica‐rich layer; and (3) a region in which greatly reduced attack was indicated. Glass electrodes of low silica content having poor chemical durability and high hygroscopicity exhibited large voltage departures approaching the values of a “punctured” mercury‐filled electrode and a calomel half cell. The apparent response to [Na + ] ranged from 9 to 339 mv. per pNa for the glasses of 82.6 and 56.6% of SiO 2 , respectively.