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Anelasticity of Glass: III, Effect of Heat‐Treatment on the Internal Friction of Tank Plate Glass
Author(s) -
FITZGERALD J. V.
Publication year - 1951
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.1151-2916.1951.tb13020.x
Subject(s) - materials science , soda lime , composite material , annealing (glass) , activation energy , internal friction , soda lime glass , alkali metal , glass transition , chemistry , polymer , organic chemistry
Heat‐treatment or annealing decreases the internal‐friction peak commonly attributed to sodium ion diffusion in tank plate glass, a typical soda‐lime‐silica glass. The peak is shifted to higher temperatures at constant frequency of vibration or to lower frequencies at constant temperature. The activation energy for the shift is greater in the annealed glass and agrees with the activation energy for the electrical conductivity and alkali durability of annealed glass. Heat‐treatment also decreases the internal friction caused by elastico‐viscous effects.