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Ionic Conductivity in Calcium Silicate Glasses
Author(s) -
SCHWARTZ MICHAEL,
MACKENZIE J. D.
Publication year - 1966
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.1151-2916.1966.tb13172.x
Subject(s) - ionic conductivity , ionic radius , electrical resistivity and conductivity , ionic bonding , impurity , calcium silicate , oxygen , activation energy , analytical chemistry (journal) , mineralogy , materials science , thermal conduction , mole , radius , silicate , mole fraction , chemistry , ion , electrolyte , electrode , composite material , chromatography , biochemistry , computer security , organic chemistry , computer science , electrical engineering , engineering
Glasses in the system CaO–SiO 2 were prepared with the composition varying from 40 to 55 mole % CaO. The Na 2 O impurity content ranged from 0.01 to 1.30 mole %. The electrical resistivity was insensitive to the Na 2 O content but decreased with increasing CaO concentration. The activation energy for conduction ranged from 33.54 to 31.23 kcal/mole as the CaO concentration increased. The conduction mechanism was considered in terms of three arbitrary parameters: (1) equivalent oxygen packing density, (2) ionic radius, and (3) ion‐oxygen attraction.