Spectrophotometric and Magnetic Studies of Glasses Containing Iron in Relation to Their Structure. Part III. Alkali–Silica Glasses Containing the Oxides of Certain Divalent, Trivalent and Tetravalent Metals

JSGT 1954 V38 T197-T243

A study has been made of the ways in which the proportions of the different forms in which iron exists in alkali-silica glasses are modified when part of the alkali or part of the silica is replaced, cation for cation, by MgO, ZnO, CaO, CdO, SrO, BaO, PbO, B₂O₃, AI₂O₃, As₂O₅, Sb₂O₅, TiO₂ or ZrO₂. A similar study has also been made of the effects of replacing part of the silica in lead oxide–silica glasses by B₂O₃ or Al₂O₃ and of replacing part of the lead oxide by Li₂O, Na₂O, K₂O, MgO, ZnO, CaO, SrO and BaO. In each type of glass, experiments were made in which the iron was introduced in different forms and in different concentrations; the conditions of melting were also varied, and in some melts the iron was introduced at different stages during the melting.

Abd El-Moneim Abou-El-Azm