Method for the manufacture of a coated metallic substrate by laser metal deposition

Patent metadata

Field	Value
Publication number	US-12509778-B2
Application number	US-202017603373-A
Country	US
Kind code	B2
Filing date	Apr 16, 2020
Priority date	Apr 17, 2019
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A pre-coated metallic substrate wherein a bare metallic substrate having a reflectance higher or equal to 60% at all wavelengths between 0.5 and 5.0 μm is coated with a pre-coating including at least one titanate and at least one nanoparticle; a method for the manufacture of this pre-coated metallic substrate; a method for the manufacture of a coated metallic substrate and a coated metallic substrate.

First claim

What is claimed is:

1 . A pre-coated metallic substrate comprising:
a bare metallic substrate having a reflectance higher or equal to 60% at all wavelengths between 0.5 and 5.0 μm, the bare metallic substrate is selected from the group consisting of: copper, aluminum, magnesium, platinum, rhodium, tantalum, silver and gold; a pre-coating coating the bare metallic substrate and including at least one titanate and at least one nanoparticle selected from the group consisting of: TiO 2 , SiO 2 , Yttria-stabilized zirconia (YSZ), Al 2 O 3 , MoO 3 , CrO 3 , CeO 2 and mixtures thereof, wherein the at least one titanate has a particle size distribution between 1 and 40 μm; wherein the pre-coating reduces the metallic substrate reflectance below 30% at all wavelengths between 0.5 and 5.0 μm.

2 . The pre-coated metallic substrate as recited in claim 1 wherein the at least one titanate is selected from the group consisting of: Na 2 Ti 3 O 7 , NaTiO 3 , K 2 TiO 3 , K 2 Ti 2 O 5 , MgTiO 3 , SrTiO 3 , BaTiO 3 , CaTiO 3 , FeTiO 3 , ZnTiO 4 and mixtures thereof.

3 . The pre-coated metallic substrate as recited in claim 1 wherein a thickness of the pre-coating is between 10 to 140 μm.

4 . The pre-coated metallic substrate as recited in claim 1 wherein the bare metallic substrate has a reflectance higher or equal to 70% at all wavelengths between 0.5 and 5.0 μm.

5 . The pre-coated metallic substrate as recited in claim 1 wherein the pre-coating further includes a binder.

6 . The pre-coated metallic substrate as recited in claim 5 wherein the percentage of binder in the pre-coating is between 1 and 20 wt. %.

7 . The pre-coated metallic substrate as recited in claim 1 , wherein the bare metallic substrate is selected from the group consisting of: copper, magnesium, platinum, rhodium, tantalum, silver and gold.

8 . A method for the manufacture of the pre-coated metallic substrate as recited in claim 1 comprising the successive following steps:
A. providing the bare metallic substrate; and
B. depositing the pre-coating.

9 . The method as recited in claim 8 further comprising a step C of drying of the coated metallic substrate obtained in step B.

10 . The method as recited in claim 8 wherein in step B, the deposition of the pre-coating is performed by spin coating, spray coating, dip coating or brush coating.

11 . The method as recited in claim 8 wherein, in step B, the pre-coating further includes an organic solvent.

12 . The method as recited in claim 11 wherein the organic solvent is selected from the group consisting of: acetone, methanol, ethanol ethyl acetate, ethylene glycol and water.

13 . The method as recited in claim 8 wherein in step B, the pre-coating comprises from 1 to 200 g/L of the at least one nanoparticle.

14 . The method as recited in claim 8 wherein in step B, the pre-coating comprises from 100 to 500 g/L of titanate.

15 . The method as recited in claim 8 wherein in step B, the pre-coating further includes a binder precursor.

16 . A coated metallic substrate comprising:
a bare metallic substrate having a reflectance higher or equal to 60% at all wavelengths between 0.5 and 5.0 μm, the bare metallic substrate is selected from the group consisting of: copper, aluminum, magnesium, platinum, rhodium, tantalum, silver and gold; and at least one metallic coating the bare metallic substrate and wherein an interface between the metallic substrate and the at least one metallic coating includes a dissolved or precipitated pre-coating including at least one titanate and at least one nanoparticle selected from the group consisting of: TiO 2 , SiO 2 , Yttria-stabilized zirconia (YSZ), Al 2 O 3 , MoO 3 , CrO 3 , CeO 2 and mixtures thereof.

17 . The coated metallic substrate as recited in claim 16 wherein the at least one metallic coating has a thickness between 0.3 and 10 mm.

18 . The coated metallic substrate as recited in claim 16 wherein at least one metallic coating includes at least two layers of metallic coatings.

19 . The pre-coated metallic substrate as recited in claim 16 , wherein the at least one titanate has a particle size distribution between 1 and 40 μm.

20 . The pre-coated metallic substrate as recited in claim 16 , wherein the at least one metallic coating is coated by laser deposition.

21 . The pre-coated metallic substrate as recited in claim 16 , wherein the percentage in dry weight of the at least one titanate is above or equal to 45%.

22 . The pre-coated metallic substrate as recited in claim 16 , wherein the pre-coating reduces the metallic substrate reflectance below 30% at all wavelengths between 0.5 and 5.0 μm.

23 . A method for manufacturing a cooling part for a pyrometallurgical furnace, cooling rolls, or a blast furnace comprising employing the coated metallic substrate as recited in claim 16 .

24 . A pre-coated metallic substrate comprising:
a bare metallic substrate having a reflectance higher or equal to 60% at all wavelengths between 0.5 and 5.0 μm, the bare metallic substrate is selected from the group consisting of: copper, aluminum, magnesium, platinum, rhodium, tantalum, silver and gold; and a pre-coating coating the bare metallic substrate and including at least one titanate and at least one nanoparticle selected from the group consisting of: TiO 2 , SiO 2 , Yttria-stabilized zirconia (YSZ), Al 2 O 3 , MoO 3 , CrO 3 , CeO 2 and mixtures thereof, wherein the at least one titanate has a particle size distribution between 1 and 40 μm;
wherein the percentage in dry weight of the at least one titanate is above or equal to 45%.

Assignees

• Arcelormittal

Inventors

• Perez Rodriguez Marcos
• Manjon Fernandez Alvaro
• Perez Piqueras Miguel
• Lopez Fresno José
• Bohm Sivasambu

Classifications

• C23C28/345

  with at least one oxide layer · CPC title

• C23C26/02

  applying molten material to the substrate · CPC title

• B23K35/365 Primary

  Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials · CPC title

• B23K26/18

  using absorbing layers on the workpiece, e.g. for marking or protecting purposes · CPC title

• B23K26/123

  in an atmosphere of particular gases · CPC title