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Study of Devitrification of Lithium Glass
Author(s) -
JACCODINE R. J.
Publication year - 1961
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.1151-2916.1961.tb13708.x
Subject(s) - devitrification , nucleation , activation energy , materials science , mineralogy , lithium (medication) , crystal (programming language) , crystal growth , analytical chemistry (journal) , crystallization , chemical engineering , chemistry , crystallography , chromatography , organic chemistry , endocrinology , computer science , programming language , engineering , medicine
An etching technique has been found which allows the devitrification phenomena in glass to be followed. Using this technique a study was made on 30 mole % Li 2 O‐SiO 2 glass at temperatures of 520°, 560°, and 600°C. By studying the average crystal size versus time at a given temperature, the growth rate was determined. It was found to be 7.5 × 10 −4 , 8 × 10 −3 , and 3 × 10 −2 cm. per hour for the three temperatures. The nucleation of crystals appeared to be linear with time at each temperature. An activation energy of 49 kcal. per mole was found for the growth process. Crystals were identified as Li 2 Si 2 O 5 .