| A Study of the Oxidation-Reduction Equilibrium
of the Oxides of Chromium in Alkali
Borate Glasses |
P. K. GANGOPADHYAY
Pages : 219-226
DOI : 10.1080/0371750X.1979.10840919 |
| Abstract |
| Seven soda boric oxide glasses and one each of potash boric
oxide and lithia boric oxide glasses were melted with
chromic oxide and sodium chromate nsing air as furnace
atmosphere till redox equilibrium between trivalent and
hexavalent chromium was attained. Estimation of ditferent
oxida~o~ states was done by chemical analysis. The present
study mdicates that both alkali content and total chromium
content influence redox equilibrium. The results suggest
that non-bridging oxygen ions appear in soda-boric oxide
glass in the range of 20 to 23% Na80 content. |
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