Scratch-resistant coating for glass ceramic cooktop
AssigneeWhirlpool EMEA S.p.A.
InventorsMargherita BASSO, Luigi DE NARDO, Agnese D'AGOSTINO
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Abstract
Scratch-resistant coatings, especially for cooktops, and substrates or products having said scratch-resistant coatings and methods for the production thereof are described herein. More particularly, scratch-resistant coatings obtained via sol-gel approach and coated substrates having thereon a hard material layer comprising metal nitride(s) and/or metal oxynitride complexes are described, as well as the manufacturing thereof.
Claims20
-20. (canceled)
A method of forming a coated cooking surface, the method comprising:
- providing a substrate defining a cooking surface;
- preparing a sol coating for deposition on the cooking surface;
- and
- depositing the sol coating on the cooking surface.
A method of forming a coated cooking surface, the method comprising:
- solubilizing one or more metal precursors in a solvent to form a solubilized precursor having an overall concentration of 0.05 to 0.5 M;
- mixing the solubilized precursor with a nitrogen carrier to form the sol coating;
- providing a substrate defining a cooking surface;
- and
- depositing the sol coating on the cooking surface,
- wherein a molar ratio between the nitrogen carrier and the one or more metal precursors is 0.5 to 5.
A sol coating for a cooking appliance comprising:
- one or more metal precursors solubilized in a solvent with an overall concentration of 0.05 to 0.5 M;
- and
- a nitrogen carrier,
- wherein a molar ratio between the nitrogen carrier and the one or more metal precursors is between 0.5 to 5, and upon deposition onto a cooking surface and curing, the sol coating has a scratch resistance of at least 10 N as based on pencil hardness.
Dependencies are inferred from the claim text.