Eurokera

Lionel Beunet

Sophie Peschiera

Christophe Remy

Sebastien Hyvart

Fabrice Minier

Marie J M Comte

Mikhail Dmitrievich Mikhailov

Anna V Belykh

Sergey K Evstropiev

Monique Comte

Mikhail D Mikhailov

Lead-free enamel composition, the corresponding enamels and glass-ceramic articles, a new lead-free mineral glass

The present invention relates to a product, comprising a body which is delimited by a surface, of a lithium aluminosilicate-based glass-ceramic, as well as to its method of preparation. Characteristically, said glass-ceramic has, on at least one part of said surface, a surface layer the degree of crystallization of which is greater than that of said glass-ceramic within said body.

Surface-modified glass-ceramics and their preparation

Objects of the present invention are: the enamel able to be obtained by firing of said composition;

The invention relates to a decorated glass-ceramic plate, suitable in particular as a cooktop, comprising a glass-ceramic plate having a low coefficient of thermal expansion between &plusmn;15&times;10 K (20-700&deg; C.) and a decoration on the surface of said plate. Characteristically, said decoration comprises a vitrified glass frit containing to % by weight of pigments and said decorated glass-ceramic cooktop has a modulus of rupture of at least 120 MPa. The invention also relates to a method of decorating glass-ceramic plates and to an enamel which is useful in particular for implementing said method.

Decorated glass-ceramic plate

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Fontainebleau, France

Lionel Beunet