Glasses were prepd. from porphyritic sands of compn. SiO2 72.40, Al2O3 13.85, K2O 4.60, Na2O 3.00, Fe2O3 2.15, CaO 1.30, MgO 0.84, TiO2 0.20, and loss on calcination 2.06%, with added TiO2 (4%) and MgO (5-15%). All glasses were subjected to phase sepn., on quenching, and devitrification to form TiO2 and MgSiO3 cryst. phases, on reheating. With increasing MgO content, the crystallinity increased. As a consequence, the refractoriness of the devitrified product increased.

Glass ceramics from porphiric sands, TiO2 (4%) and MgO(5-15%) / A., Tomasi; P., Scardi; S., Gialanella; Branda, Francesco; Costantini, Aniello. - In: SILICATES INDUSTRIELS. - ISSN 0037-5225. - ELETTRONICO. - 55:(1990), pp. 339-342.

Glass ceramics from porphiric sands, TiO2 (4%) and MgO(5-15%)

BRANDA, FRANCESCO;COSTANTINI, ANIELLO
1990

Abstract

Glasses were prepd. from porphyritic sands of compn. SiO2 72.40, Al2O3 13.85, K2O 4.60, Na2O 3.00, Fe2O3 2.15, CaO 1.30, MgO 0.84, TiO2 0.20, and loss on calcination 2.06%, with added TiO2 (4%) and MgO (5-15%). All glasses were subjected to phase sepn., on quenching, and devitrification to form TiO2 and MgSiO3 cryst. phases, on reheating. With increasing MgO content, the crystallinity increased. As a consequence, the refractoriness of the devitrified product increased.
1990
Glass ceramics from porphiric sands, TiO2 (4%) and MgO(5-15%) / A., Tomasi; P., Scardi; S., Gialanella; Branda, Francesco; Costantini, Aniello. - In: SILICATES INDUSTRIELS. - ISSN 0037-5225. - ELETTRONICO. - 55:(1990), pp. 339-342.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/480872
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