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Acid Durability of Sodium and Potassium Galliosilicate Glasses
Author(s) -
LAPP JOSEF C.,
SHELBY JAMES E.
Publication year - 1987
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.1151-2916.1987.tb04980.x
Subject(s) - gallium , dissolution , nitric acid , alkali metal , durability , potassium , inorganic chemistry , sodium , ion exchange , chemistry , ion , materials science , mineralogy , organic chemistry , composite material
The relative chemical durability in nitric acid of three series of glasses in the (Na,K) 2 O‐Ga 2 O 3 ‐SiO 2 system have been studied. In these compositions, gallium is proposed to behave as either a network modifier or former depending on the gallium to alkali ion ratio of the glass. The mechanisms of acid attack as found in the present work are postulated to be a combination of ion exchange and network dissolution dependent upon the glass composition/structure. This results in complex trends in the acid dissolution of these glasses as functions of the gallium to alkali ion ratio, and silica content.