Oxygen Activity Change In Soda-Lime-Silica Glass Melts With Or Without Refining Agent

Oxygen Activity Change In Soda-Lime-Silica Glass Melts With Or Without Refining Agent

The effect of refining agents in soda-lime-silica melts was examined by measuring the oxygen activity with using electromotive force. When the melt contained antimony, the activity changed with temperature and the variation in activity increased as the antimony content increased. When the oxygen content in the atmosphere changed, the oxygen activity in the melt changed gradually by diffusion. The variation in oxygen activity with atmosphere decreased with increasing antimony content and almost disappeared when the Sb203 content was 1 mol%. In the case of sulfate addition, the activity value became unstable when the temperature was raised, which might be caused by bubble formation accompanied by the decomposition of sulfate.

Author: 
M Yamashita And H Yamanaka
Origin: 
Osaka Nat Research Lab, Japan
Journal Title: 
Glastech Ber Glass Sci Technol 70 12 1997 371-374
Sector: 
Container glass

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Journal Title: Glastech Ber Glass Sci Technol 70 12 1997 371-374

Class: C 1106