Transparent, non-coloured lithium aluminium silicate glass ceramic cartridge with high quartz mixing crystal as the main crystal phase and process for the manufacture and use of the article

摘要

The invention concerns a transparent, non-coloured lithium aluminium silicate glass ceramic cartridge with high quartz mixing crystals as the main crystal phase containing essentially the following components (in AC% on an oxide basis):Li2O 3 4,5Al2O3 19 -24SiO2 62 -70Na2O 0-1,5K2O 0-1,5MgO 0,01 0,5CaO 0-1,5SrO 0-1,5BaO 0 -3ZnO 0 -3TiO2 1,6 -2,8ZrO2 1 - 2,5P2O5 0 4Fe2O3 0025 -0065MnO2 0002 -0,05and with at least one cleansing agent selected from the group As2O3 and/or SnO2 in content up to 2. where the ceramic ceramic tile, measured at 4 mm thickness with standard light D65, has a colour c* of three to seven.The invention also concerns its production and uses.