公开(公告)号：US20250091131A1

公开(公告)日：2025-03-20

申请号：US18728089

申请日：2023-01-31

Applicant: ArcelorMittal

Inventor： Frédéric BONNET ,  Valérie DAESCHLER ,  Luis Miguel SANZ MORAL ,  Rosalía REMENTERIA FERNANDEZ ,  Laura DEL RIO FERNANDEZ

IPC: B22F9/08 ,  B22F1/05 ,  B33Y70/00 ,  C22C33/04

Abstract: A ferrous alloy powder for additive manufacturing, obtained by atomization with a gas made of at least 95% in volume of nitrogen, the alloy including carbon up to 0.5 wt. %, titanium up to 11.0 wt. %, boron up to 5 wt. %, manganese up to 30 wt. %, aluminium up to 15 wt. %, silicon up to 1.5 wt. %, vanadium up to 0.5 wt. %, copper up to 2 wt. %, niobium up to 2 wt. %, the remainder being iron and residual elements, the powder including endogenous nitrides and/or carbonitrides of at least one element chosen among a group consisting of titanium, aluminium, boron, vanadium, silicon, and niobium, the nitrogen content of such ferrous alloy powder being above the solubility limit of nitrogen in such alloy, at the atomization temperature. A manufacturing method of such powder is also provided.

公开(公告)号：US20240081441A1

公开(公告)日：2024-03-14

申请号：US18269626

申请日：2021-12-17

Applicant: ArcelorMittal

Inventor： Abel ALVAREZ-ALVAREZ ,  Alvaro MANJON FERNANDEZ ,  Luis Miguel SANZ MORAL ,  David NORIEGA PEREZ ,  Jorge RODRíGUEZ GARCíA ,  Laura MEGIDO FERNANDEZ ,  Sivasambu BOHM ,  Roberto SUAREZ SANCHEZ ,  Marcos PEREZ RODRIGUEZ

IPC: A41D13/11 ,  A01N25/10 ,  A01N25/28 ,  A01N59/20 ,  A01P1/00 ,  A41D31/30 ,  A62B23/02 ,  B22F1/054 ,  B22F1/103 ,  B22F1/16 ,  D06M11/74 ,  D06M11/83 ,  D06M15/263 ,  D06M15/564 ,  D06M16/00

CPC classification number: A41D13/1192 ,  A01N25/10 ,  A01N25/28 ,  A01N59/20 ,  A01P1/00 ,  A41D31/305 ,  A62B23/025 ,  B22F1/056 ,  B22F1/103 ,  B22F1/16 ,  D06M11/74 ,  D06M11/83 ,  D06M15/263 ,  D06M15/564 ,  D06M16/00 ,  B22F2301/10 ,  B22F2302/25 ,  B22F2304/052 ,  D06M2101/06

Abstract: A first subject of the present invention has an antiviral formulation with metallic copper particles in an unoxidized form and having a median particle diameter inferior or equal to 200 nm, graphene oxide or reduced graphene oxide, and a bonding matrix material. A second subject of the invention has an antiviral filtering material with a layer of textile and at least one layer of an antiviral coating comprising metallic copper particles in an unoxidized form and having a median particle diameter inferior or equal to 200 nm, graphene oxide or reduced graphene oxide, and a bonding matrix into which both metallic copper particles and graphene oxide or reduced graphene oxide are anchored. The invention also concerns methods of preparation of the antiviral formulation and of the antiviral filtering material. Finally, the invention includes an antiviral face mask with a layer of textile coated with the antiviral formulation.