Glass and Glass Ceramic

摘要

An LAS-glass for producing a transparent glass-ceramic and an LAS-glass-ceramic having a predetermined chroma C* and a predetermined visually determinable scatter value (S) are provided. The LAS-glass and LAS-glass-ceramic has a process window as large as possible during the nucleus formation process with respect to the residence time in the relevant temperature range for the formation of nuclei.

主权项

1. An Li2O—Al2O3—SiO2 (LAS) glass for the production of a transparent glass ceramic, comprising:
components, in wt., of:
Al2O3 19-23,Fe2O3 0.01-0.02,Li2O 3.2-4.2,P2O5 0-<1.6,SiO2 64-68,SnO2 0-0.5,TiO2 1.6-2.5,ZnO 1.0-2.5, andZrO2 1.2-2.0; and a condition B1, the condition B1 comprising 20<(Li2O+Al2O3+SiO2)/(SnO2+TiO2+ZrO2+Fe2O3)<25.