The flow of foamed and sintered glasses with float glass composition is studied in the strain rate range from 10-5 to 10-2s-1. Cylindrical samples are compressed at constant temperature (T=574 deg C) using a parallel plate viscometer equipped with a servo-hydraulic device. The results indicate that the onset of non-Newtonian flow is not affected by bubble content or porosity (4-60 vol%). Only for the foamed glasses which contain internal crystals a non-Newtonian flow at lower deformation rates (by 2 orders of magnitude) is determined.
Origin
University Of Berlin, Germany
Journal Title
Glass Technology 43C 2002 43-45
Sector
Special Glass
Class
S 2549