The influence of gas (Ar) pressure on the formation of a bubble structure in silicate melt film

The formation of a bubble structure in a film of silicate melt obtained by the melting of glass powder layer has been studied using a computer-aided complex consisting of a high-temperature microscope, a digital video camera, an “input-output” card, and an IBM-486 personal computer. It is shown that...

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Bibliographic Details
Published in:Glass physics and chemistry 2000-09, Vol.26 (5), p.494-498
Main Authors: Vasnetsova, V. B., Shardakov, N. T., Kudyakov, V. Ya, Deryabin, V. A.
Format: Article
Language:English
Subjects:
Bubbles
Cameras
Glass
High temperature
Law
Melting
Melts
Microscopes
Personal computers
Silicates
Size distribution
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Summary:The formation of a bubble structure in a film of silicate melt obtained by the melting of glass powder layer has been studied using a computer-aided complex consisting of a high-temperature microscope, a digital video camera, an “input-output” card, and an IBM-486 personal computer. It is shown that the specific surface area of bubbles and their volume decrease with time at all studied pressures (0.02, 0.1, and 0.2 MPa). A decrease in the number of bubbles is reliably recorded only at pressures of 0.1 and 0.02 MPa. At a pressure of 0.2 MPa, the number of bubbles decreases only at the final stage. The size distribution of bubbles at pressures of 0.02 and 0.1 MPa is described by a lognormal law, whereas similar distribution at a pressure of 0.2 MPa considerably differs from this law.
ISSN:1087-6596
1608-313X
DOI:10.1007/BF02732072