Lead - and cadmium-free glass composition for glazing, enamelling and decorating glasses or glass ceramics as well as a process for the preparation of a glass ceramic coated therewith

摘要

lead and cadmiumfreies glass for glazing, enamelling and decoration of glasses or glaskeramiken,after the crystallization hochquarz and / or keatit - mixed crystals as hauptkristallphase) and a low wu00e4rmeausdehnung of less than 2 x 10 - 6 / k between 20 and expanded inthe composition (in% by weight.-%) li2o 0 - 5, na2o 0 - 5, k20 2, li2o + na2o + k20 1 - 10, 0, 3, mgo, cao, sro 0 - 4 0 4 0 4, bao, zno, 0, 4, b2o3 15, 27, 10 - 20 al2o3, sio2 43 58, o 3 has analyzed nanostructured tio2, zro2 0 - 4, sb2o3 0 - 2, f 0 - 3.in exchange for oxygen and up to 30%.-% of at brenntemperatur steady pigmentes, with the mean of the entire biegezugfestigkeit decorated glaskeramiken after the einbrand greater than 30 mpa.