Electron Exchange Reactions Between Polyvalent Elements In Soda-Lime-Silica And Sodium Borate Glasses

In oxidic glasses the redox state of polyvalent elements is determined by the oxygen partial pressure with which the melt is in equilibrium. However, if a second polyvalent element is introduced, the redox ratios at a given oxygen partial pressure change for both elements. Oxygen balance calculations are carried out based on literature available for iron/chromium and iron/manganese interaction finishes already at high temperatures.