Coated steel substrate
AssigneeArcelorMittal
InventorsCarlos Laliena Iranzo, Marcos Perez Rodriguez
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Abstract
A coated steel substrate including a coating including nanographite having a lateral size between 1 and 60 μm and a binder, wherein the steel substrate has the following compositions in weight percent: 0.31≤C≤1.2%, 0.1≤Si≤1.7%, 0.7≤Mn≤3.0%, P≤0.01%, S≤0.1%, Cr≤0.5%, Ni≤0.5%, Mo≤0.1%, and on a purely optional basis, one or more elements such as Nb≤0.05%, B≤0.003%, Ti≤0.06%, Cu≤0.1%, Co≤0.1%, N≤0.01%, V≤0.05%, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration; and a method for the manufacture of the coated steel substrate.
Claims21
A method for the manufacture of a coated steel substrate comprising:
- a steel substrate;
- a coating including nanographite flakes having a lateral size between 1 and 60 μm;
- and
- a binder, wherein the steel substrate has a composition in weight percent as follows:
- 0.31≤C≤1.2%,
- 0.1≤Si≤1.7%,
- 0.7≤Mn≤3.0%,
- P≤0.01%,
- S≤0.1%,
- Cr≤0.5%,
- Ni≤0.5%,
- Mo≤0.1%,
- and on a purely optional basis, at least one of the following:
- Nb≤0.05%,
- B≤0.003%,
- Ti≤0.06%,
- Cu≤0.1%,
- Co≤0.1%,
- N≤0.01%,
- V≤0.05%,
- a remainder of the composition being made of iron and inevitable impurities resulting from processing, the method comprising the successive following steps:
- providing the steel substrate;
- and
- depositing an aqueous mixture on the steel substrate to form the coating,
- wherein the steel substrate is a slab, a billet or a bloom.
A method for the manufacture of a coated steel substrate comprising:
- a steel substrate;
- a coating including nanographite flakes having a lateral size between 1 and 60 μm;
- and
- a binder, wherein the steel substrate has a composition in weight percent as follows:
- 0.31≤C≤1.2%,
- 0.1≤Si≤1.7%,
- 0.7≤Mn≤3.0%,
- P≤0.01%,
- S≤0.1%,
- Cr≤0.5%,
- Ni≤0.5%,
- Mo≤0.1%,
- and on a purely optional basis, at least one of the following:
- Nb≤0.05%,
- B≤0.003%,
- Ti≤0.06%,
- Cu≤0.1%,
- Co≤0.1%,
- N≤0.01%,
- V≤0.05%,
- a remainder of the composition being made of iron and inevitable impurities resulting from processing, the method comprising the successive following steps:
- providing the steel substrate;
- and
- depositing an aqueous mixture on the steel substrate to form the coating,
- wherein the binder is sodium silicate or the binder includes aluminum sulfate and an additive being alumina.
A method for the manufacture of a coated steel substrate comprising:
- a steel substrate;
- a coating including nanographite flakes having a lateral size between 1 and 60 μm;
- and
- a binder, wherein the steel substrate has a composition in weight percent as follows:
- 0.31≤C≤1.2%,
- 0.1≤Si≤1.7%,
- 0.7≤Mn≤3.0%,
- P≤0.01%,
- S≤0.1%,
- Cr≤0.5%,
- Ni≤0.5%,
- Mo≤0.1%,
- and on a purely optional basis, at least one of the following:
- Nb≤0.05%,
- B≤0.003%,
- Ti≤0.06%,
- Cu≤0.1%,
- Co≤0.1%,
- N≤0.01%,
- V≤0.05%,
- a remainder of the composition being made of iron and inevitable impurities resulting from processing, the method comprising the successive following steps:
- providing the steel substrate;
- and
- depositing an aqueous mixture on the steel substrate to form the coating,
- wherein the organometallic compound includes Dipropylene glycol monomethyl ether (CH3OC3H6OC3H6OH), 1,2-Ethanediol (HOCH2CH2OH) and 2-ethylhexanoic acid, manganese salt (C8H16MnO2).
Dependencies are inferred from the claim text.