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GASES IN GLASS *
Author(s) -
Dalton R. H.
Publication year - 1933
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.1151-2916.1933.tb19258.x
Subject(s) - borosilicate glass , oxygen , carbon dioxide , carbon monoxide , nitrogen , volume (thermodynamics) , nitrogen gas , hydrogen , carbon fibers , impurity , chemistry , mineralogy , materials science , inorganic chemistry , metallurgy , organic chemistry , thermodynamics , composite material , catalysis , physics , composite number
ARSTRACT An apparatus is described for extracting the gas from glass at glass‐furnace temperature and determining its composition. Results are given for glasses of various compositions and various melting histories. All ordinary glasses were found to contain appreciable quantities of dissolved (or chemically combined) gas, the amount varying from a few hundredths to a few tenths per cent. Water is frequently the most abundant gas, the content being highest in borosilicate glasses. Carbon dioxide is also usually present, the amount depending on the basicity of the glass. Nitrogen, carbon monoxide, and hydrogen were never found present in appreciable quantities. All oxidized glasses contain some oxygen. Glasses containing arsenic give off a comparatively large volume of oxygen. The effect of this oxygen on fining is discussed. It has been found that remelting a glass has little effect on the gas content. The gas content is greatly influenced by the size of the melt, being the lowest in small experimental melts.