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EXPANSION MEASUREMENTS OF SEVERAL GLASSES BY MEANS OF A SELF‐REGISTERING APPARATUS 1
Author(s) -
Cohn Willi M.,
Scholes S. R.
Publication year - 1931
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.1151-2916.1931.tb16601.x
Subject(s) - softening point , quartz , softening , materials science , annealing (glass) , volume expansion , composite material , mineralogy , optics , chemistry , physics , medicine
Applying an apparatus which registers photographically, and using quartz glass as control material, the expansion behavior of several glasses upon heating to temperatures above the softening point was investigated. It is shown that, with the help of the arrangement developed, even slight variations in the expansion‐temperature curve, which might easily escape visual observation, can be detected. It is possible, by utilizing the results of these measurements, to regulate the annealing process of the glasses in the most useful manner.