VITROCERAMIQUES DE BETA-QUARTZ, TRANSPARENTES ET INCOLORES, A FAIBLE TENEUR EN TIO2; ARTICLES EN LESDITES VITROCERAMIQUES ; VERRES PRECURSEURS, PROCEDES D'ELABORATION

摘要

The invention mainly relates to a transparent, essentially colorless/?&bgr;-quartz glass-ceramic material, the composition of which is free of As2O3 and of Sb2O3 and contains a specific combination of three nucleating agents: TiO2, ZrO2 and SnO2; TiO2 being present in low quantity.