Glass-ceramic item and enamel suitable for coating same

The present invention relates to a glass-ceramic item that is at least partially coated with at least one layer of enamel formed by a glass frit having the following composition, the proportions being given as weight percentages: SiO2 50% - 66%, preferably 50% < SiO2 < 65%; MgO 3% - 8%, prefer...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BARET BERTRAND, LECOMTE EMMANUEL, FAILLAT CAROLINE, VILATO PABLO, ROUILLON MARIE-HELENE
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	The present invention relates to a glass-ceramic item that is at least partially coated with at least one layer of enamel formed by a glass frit having the following composition, the proportions being given as weight percentages: SiO2 50% - 66%, preferably 50% < SiO2 < 65%; MgO 3% - 8%, preferably 3% - 6%; Na2O 7% - 15%; K2O < 3%; Li2O < 3%, in particular < 2%; CaO < 1%; BaO > 0% - 15%, preferably 5% - 15%; Al2O3 3% - 20%, preferably 3% < Al2O3 < 20%; ZrO2 0% - 4%, preferably 0% < ZrO2< 4%, in particular 0.5% - 2%; ZnO > 0% - 5%; B2O3 > 0% - 6%, preferably 0% < B2O3