摘要:
A method for preparing silicon nitride films with improved properties and characterized by a limited concentration of hydrogen atoms, a high index of refraction, resistance to attack by a hydrofluoric solution, prevention of diffusion of alkalines and oxygen, and good dielectric properties such as optical gap. The process of preparation uses plasma CVD with ammonia. The invention can be applicable to flat screens, TFT transistors and functional glazings.
摘要:
This invention relates to a glass sheet having a low content of alkaline oxides and alkaline-earth oxides, in the composition of which the sum of the alkaline and alkaline-earth oxides is less than or equal to 15%, with a sodium oxide content less than or equal to 10%, the values being expressed in percentages by weight, at least one of the faces of which is constituted of a surface zone virtually devoid, notably, of alkaline ions.
摘要:
A transparent or translucent glass-ceramic plate, capable of covering or receiving at least one underlying heating element. The plate has a coating which at least partly masks the underlying heating element(s), while still allowing the heating element(s) and optional displays to be detected. At least 90% of the coating is on the face of the plate to be turned toward the heating element(s) and optional displays in the use position. The coating has a region or a group of regions known as a background region(s), wherein the background region(s) occupy most of the surface of the coating. The coating also has a region or a group of regions known as indicating region(s), wherein the indicating region(s) making it possible to display, relative to the background region(s), a pattern, a sign and/or the location of functional elements while also making it possible to detect if the elements are in operation.
摘要:
A process for reinforcing a glass-ceramic article, into which a maximum tension is introduced beneath the surface of the glass-ceramic, advantageously in proximity to said surface. The invention also relates to an enamel that can be used for this reinforcement, this enamel being formed from a glass frit having the following composition, the proportions being expressed as weight percentages: SiO250-66% MgO3-8% Na2O 7-15% K2O0-3% Li2O 0-12% CaO 0-10% BaO 0-15% Al2O30-3% ZrO20-3% ZnO0-5% B2O30-8% the sum of the alkaline-earth metal oxides CaO+BaO moreover being between 8 and 15%, and the sum of the alkali metal oxides Na2O+K2O+Li2O moreover being between 7 and 20%. The reinforced glass-ceramics obtained by the process.
摘要:
A glass-ceramic panel, which may cover or receive at least one heating element, and may serve as a cook-top The panel is coated, in at least one region of a face, with a coating such that the total color difference delta E*, measured on the opposite face, between said coated region and an uncoated region, is less than about 1 and/or such that this coating has a luminance L* of greater than about 70. A process for manufacturing the panel and a cooking device comprising said panel.
摘要:
A glass-ceramic plate, a method of manufacturing a glass-ceramic plate, and hubs equipped with the glass-ceramic plate. A flat or substantially flat glass-ceramic plate includes a surface provided with pegs, the plate configured to equip a hob. At least one smooth region, free of pegs, is reserved in a location designed to come, in a mounted position, face to face with one or more elements of the hob, the blurred view of which due to the pegs must be improved.
摘要:
A hotplate, such as a plate of vitreous ceramic, intended to equip a cooker having at least one gas burner, includes a raised zone intended to cover the gas burner. The raised zone includes orifices.
摘要:
Display assembly 1 comprising, on the one hand, a glass-ceramic plate 2 of the lithium aluminosilicate type, the optical transmission of which for a thickness of 4 mm is between 0.2% and 4% for at least one wavelength between 400 and 500 nm and, on the other hand, a luminous device 4, characterized in that the luminous device 4 comprises at least one polychromatic light source 5 having at least a first emission of nonzero intensity at said wavelength between 400 and 500 nm and at least a second emission of more than 500 nm, and such that the positioning of said source 5 is designed to allow display through said glass-ceramic plate 2.
摘要:
Glass-ceramic plates that may be used to cover or receive at least one heating element of a cooking apparatus, wherein the glass-ceramic plates include a coating comprising at least two contrasted zones. Methods and devices for producing such glass plates and cooking apparatus are provided.
摘要:
Display assembly 1 comprising, on the one hand, a glass-ceramic plate 2 of the lithium aluminosilicate type, the optical transmission of which for a thickness of 4 mm is between 0.2% and 4% for at least one wavelength between 400 and 500 nm and, on the other hand, a luminous device 4, characterized in that the luminous device 4 comprises at least one polychromatic light source 5 having at least a first emission of nonzero intensity at said wavelength between 400 and 500 nm and at least a second emission of more than 500 nm, and such that the positioning of said source 5 is designed to allow display through said glass-ceramic plate 2.