US 12,364,360 B2
Induction heatable coated metal cooking surface
Martin Rubio, Rumilly (FR); and Jean-Francois Brasset, Annecy (FR)
Assigned to SEB S.A., Ecully (FR)
Appl. No. 17/789,389
Filed by SEB S.A., Ecully (FR)
PCT Filed Dec. 22, 2020, PCT No. PCT/EP2020/087711
§ 371(c)(1), (2) Date Jun. 27, 2022,
PCT Pub. No. WO2021/130277, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 1915686 (FR), filed on Dec. 27, 2019.
Prior Publication US 2023/0050619 A1, Feb. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A47J 36/02 (2006.01); A47J 27/00 (2006.01); B21D 51/22 (2006.01); B32B 15/01 (2006.01); C23C 2/12 (2006.01)
CPC A47J 36/025 (2013.01) [A47J 27/002 (2013.01); B21D 51/22 (2013.01); B32B 15/012 (2013.01); C23C 2/12 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A coated metal cooking support compatible with induction heating, comprising:
a metal body including a heating face and a cooking face, and
a protective coating;
wherein the heating face has a bottom configured to face an induction heating device, and the protective coating is disposed on the heating face,
wherein the cooking face includes an anti-adhesive coating forming a cooking surface,
wherein the metal body comprises:
a two-sided low-carbon ferromagnetic steel sheet comprising a low-carbon ferromagnetic steel substrate, and
an aluminum-based deposit disposed on each face of the two-sided low-carbon ferromagnetic steel sheet,
wherein the aluminum-based deposit comprises an outer layer comprising an aluminum-based matrix, and an intermediate layer comprising iron/aluminum intermetallic compounds, which comprise FeAl3 or Fe2Al5,
wherein the intermediate layer is positioned between the ferromagnetic low-carbon steel substrate and the outer layer,
wherein, at least on the bottom outer surface of the heating face, the outer layer has a thickness of less than 27 μm,
wherein the intermediate layer has a thickness of greater than 3 μm to 5 μm, and
wherein the outer layer comprises silicon in an amount of more than 10 wt % to less than or equal to 13 wt %, based on a total weight of the outer layer, and the outer layer comprises Al—Fe—Si needles in an aluminum-silicon matrix.