Abstract: Provided is a food cooking surface for a cookware item or an electrical household cooking appliance, consisting of a deposit of nitride of metal elements on a substrate, the metal elements of the deposit comprising one or more X transition metal(s) and aluminium. The production of the deposit comprises a nitridation step in arder to obtain a coating of type (X,Al)N. According to the invention, the (X,Al)N-type coating is a coating of nitride(s) of the one or more X transition metal(s), enriched with aluminium, in which niobium and/or zirconium is/are make up the most part of the X transition metal(s), the atomic ratio of aluminium in the metal elements of the deposit being at least equal to 20%. Also provided are cookware items and electrical household appliances intended for the cooking of food, comprising the above-mentioned type of cooking surface.

Abstract: A process for generating nanoparticles on the surface of a substrate includes a step of providing the substrate made of a material including at least one element from columns 4, 5, 13 and 14 of the periodic classification, and at least one noble or transition metal; a step of irradiating the substrate by laser, with a pulse duration between 1 fs and 100 ps, a pulse between 0.01 J/cm2 and 100 J/cm2, a wavelength between 100 nm and 5000 nm, and a number of pulses per point between 1 and 1000; and a step of generating at least one nanoparticle on the surface of the substrate, the at least one nanoparticle including at least the noble or transition metal, and having a different chemical composition from that of the substrate. Also disclosed is a part including such nanoparticles.

Abstract: The present invention relates to a cooking device including a metal holder supporting a ceramic cooking surface, the holder having a hardness no lower than 150 HV. The holder forms a substrate supporting a surface layer made of a transition metal boride or boronitride forming the cooking surface. The present invention further relates to a culinary article including a cooking device of the type above-mentioned, a household cooking appliance including a cooking device of the type above-mentioned, as well as a method for producing a cooking device of the type above-mentioned.

Abstract: The present invention relates to a cooking device including a metal holder supporting a ceramic cooking surface, the holder having a hardness no lower than 150 HV. The holder forms a substrate supporting a surface layer made of a transition metal boride or boronitride forming the cooking surface. The present invention further relates to a culinary article including a cooking device of the type above-mentioned, a household cooking appliance including a cooking device of the type above-mentioned, as well as a method for producing a cooking device of the type above-mentioned.

Abstract: Provided is a food-cooking surface for a culinary article or domestic electrical cooking appliance, consisting in depositing Zr and/or Nb and/or Ti on a substrate, the production process including a step of carburizing and/or nitriding at least one of the aforementioned elements, characterized in that the cooking surface also includes depositing Si so as to produce (Zr/Nb/Ti)—Si—(N/C) coatings. Also provided is a culinary article or domestic electrical or gas cooking appliance comprising such a cooking surface.

Abstract: Provided is a food cooking surface for a cookware item or an electrical household cooking appliance, consisting of a deposit of nitride of metal elements on a substrate, the metal elements of the deposit comprising one or more X transition metal(s) and aluminium. The production of the deposit comprises a nitridation step in arder to obtain a coating of type (X,Al)N. According to the invention, the (X,Al)N-type coating is a coating of nitride(s) of the one or more X transition metal(s), enriched with aluminium, in which niobium and/or zirconium is/are make up the most part of the X transition metal(s), the atomic ratio of aluminium in the metal elements of the deposit being at least equal to 20%. Also provided are cookware items and electrical household appliances intended for the cooking of food, comprising the above-mentioned type of cooking surface.

Abstract: Provided is a food-cooking surface for a culinary article or domestic electrical cooking appliance, consisting in depositing Zr and/or Nb and/or Ti on a substrate, the production process including a step of carburizing and/or nitriding at least one of the aforementioned elements, characterized in that the cooking surface also includes depositing Si so as to produce (Zr/Nb/Ti)—Si—(N/C) coatings. Also provided is a culinary article or domestic electrical or gas cooking appliance comprising such a cooking surface.