阅读说明：本技术 玻璃陶瓷制品 (Glass-ceramic article ) 是由 N·鲁 C·法伊拉特 A·邦当 T·格东 于 2019-02-18 设计创作，主要内容包括：本发明涉及一种新型玻璃陶瓷制品,其包括至少一个由玻璃陶瓷制成的基材,例如板,所述基材在至少一个区域中被涂覆有至少一个搪瓷涂层,使得：1)所述搪瓷具有小于40的在60°的光泽度,2)在所述涂覆有所述涂层的区域中的所述搪瓷的覆盖率为40-80%,3)所述搪瓷包含呈用金属氧化物或金属氧化物组合进行覆盖的云母和/或氧化铝和/或二氧化硅颗粒形式的颜料,4)所述搪瓷具有高于或等于0.4μm的粗糙度Ra,5)所述搪瓷具有高于4μm的粗糙度Rt。(The invention relates to a novel glass-ceramic article comprising at least one substrate, for example a plate, made of a glass-ceramic, which substrate is coated in at least one area with at least one enamel coating, such that: 1) the enamel has a gloss at 60 ° of less than 40, 2) the coverage of the enamel in the region coated with the coating is 40-80%, 3) the enamel contains pigments in the form of mica and/or aluminium oxide and/or silicon dioxide particles covered with metal oxides or metal oxide combinations, 4) the enamel has a roughness Ra higher than or equal to 0.4 μm, 5) the enamel has a roughness Rt higher than 4 μm.)

1. A glass-ceramic article comprising at least one substrate, such as a plate, made of glass-ceramic, which substrate is coated in at least one area with at least one enamel coating, such that:

1) the enamel has a gloss at 60 deg. of less than 40,

2) the coverage of the enamel in the area coated with the coating is 40-80%,

3) the enamel comprises pigments in the form of mica and/or alumina and/or silica particles covered with metal oxides or metal oxide combinations,

4) the enamel having a roughness Ra higher than or equal to 0.4 μm,

5) the enamel has a roughness Rt higher than 4 μm.

2. The glass-ceramic article of claim 1, wherein the substrate is based on a glass-ceramic that intrinsically has a light transmittance TL of less than 40% under light source D65, and an optical transmittance of 0.5-3% for a wavelength of 625 nm.

3. The glass-ceramic article according to any one of claims 1-2, wherein the area coated with the enamel coating is at least 5cm x 5cm, in particular at least 10cm x 10cm, in particular at least 20cm x 20 cm.

4. The glass-ceramic article according to any one of claims 1-3, wherein the contour or pattern of the enamel coating is random and isotropic.

5. The glass-ceramic article of any one of claims 1-4, wherein the roughness Ra is in the range of 0.4-0.7 μm.

6. The glass-ceramic article of claim 5, wherein the roughness Rt is from 4 to 8 μm.

7. The glass-ceramic article according to any one of claims 1-6, wherein the enamel comprises less than or equal to 25 wt.% B, in particular less than 20 wt.%, preferably less than 15 wt.%, in particular less than 10 wt.%, even less than 6 wt.%₂O₃And (4) proportion.

8. The glass-ceramic article of any one of claims 1-7, wherein the coating has a thickness between 1.5 μ ι η and 3.5 μ ι η.

9. The glass-ceramic article of any one of claims 1-8, wherein the enamel coating is free of hydrophobic and oleophobic characteristics.

10. The glass-ceramic article according to any one of claims 1-9, wherein the region is coated with the enamel coating without a pretreatment of the type of dipping or applying a primer.

11. The glass-ceramic article of any one of claims 1-10, wherein the article or the substrate is a cooking plate or countertop or center galley or console.

12. Method for producing a glass-ceramic article according to any one of claims 1-11, wherein at least one enamel coating is applied such that:

1) the enamel has a gloss at 60 deg. of less than 40,

2) the coverage of the enamel in the area coated with the coating is 40-80%,

3) the enamel comprises pigments in the form of mica and/or alumina and/or silica particles covered with metal oxides or metal oxide combinations,

4) the enamel having a roughness Ra higher than or equal to 0.4 μm,

5) the enamel has a roughness Rt higher than 4 μm,

the enamel coating is applied to at least a portion of the glass substrate, and the glass substrate so coated is then cerammed,

or applied to at least a portion of the glass-ceramic substrate and then firing the enamel.