US 12,359,293 B2
Coated steel substrate, a method for the manufacture of a coated steel substrate, a method for manufacture of a steel product and a steel product
Thomas Urios, Hettange-Grande (FR); Patrick Choquet, Longeville les Metz (FR); and Sergey Ershov, Dalheim (LU)
Assigned to ArcelorMittal, Luxembourg (LU); and Luxembourg Institute of Science and Technology (LIST), Luxembourg (LU)
Appl. No. 17/439,506
Filed by ArcelorMittal, Luxembourg (LU); and Luxembourg Institute of Science and Technology (LIST), Luxembourg (LU)
PCT Filed Mar. 20, 2020, PCT No. PCT/IB2020/052577
§ 371(c)(1), (2) Date Sep. 15, 2021,
PCT Pub. No. WO2020/188529, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. PCT/IB2019/052260 (WO), filed on Mar. 20, 2019.
Prior Publication US 2022/0154326 A1, May 19, 2022
Int. Cl. C23C 2/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/18 (2006.01); C23C 14/16 (2006.01); C23C 28/02 (2006.01); C23C 14/35 (2006.01)
CPC C23C 2/00 (2013.01) [C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); C23C 28/021 (2013.01); C23C 14/16 (2013.01); C23C 14/35 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A coated steel substrate comprising:
a steel substrate comprising Cr≤2.0% by weight;
a first coating including above 40 wt. % of chromium, 0% >=yttrium<10%, 0%>=silicon<10%, 0%>=calcium<10%, 0%>=titanium<10%, 0%>=zirconium<10%, 0%>=vanadium<10%, 0%>=niobium<10%, and 0% >=nickel<10%, a first coating balance being chromium; and
a second coating including from 2 to 30 wt. % of aluminum, from 10 to 40 wt. % of chromium, 0% >=yttrium<10%, 0%>=silicon<10%, 0%>=calcium<10%, 0%>=titanium<10%, 0%>=zirconium<10%, 0%>=vanadium<10%, 0%>=niobium<10%, and 0% >=nickel<10%, a second coating balance being iron.