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Capillarity‐Induced Smoothing of Glass Surfaces by Viscous Flow
Author(s) -
CASSIDY D. C.,
GJOSTEIN N. A.
Publication year - 1970
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.1151-2916.1970.tb12060.x
Subject(s) - smoothing , viscosity , groove (engineering) , mechanics , flow (mathematics) , wavelength , amplitude , viscous flow , materials science , volumetric flow rate , viscous liquid , optics , physics , composite material , mathematics , metallurgy , statistics
A theoretical and experimental study of the smoothing rates of corrugations on glass surfaces demonstrated that the decay in amplitude of periodic surface perturbations having wavelengths from 5 to 14 μm occurs because of the action of capillarity forces and that the rate of smoothing is controlled by viscous flow. This technique allows determination of the viscosity of glasses from 10 5 to 10 12 P. Also, a theoretical analysis of the decay of an isolated V‐shaped groove by viscous flow is presented.