US 12,186,804 B2
Metal powder for 3D-printing
Markus Weinmann, Goslar (DE); Holger Brumm, Goslar (DE); Christoph Schnitter, Holle (DE); and Melanie Stenzel, Schleswig (DE)
Assigned to TANIOBIS GMBH, Goslar (DE)
Filed by TANIOBIS GMBH, Goslar (DE)
Filed on Nov. 15, 2023, as Appl. No. 18/509,326.
Application 18/509,326 is a division of application No. 17/047,069, granted, now 11,865,612, previously published as PCT/EP2019/058901, filed on Apr. 9, 2019.
Claims priority of application No. 18167328 (EP), filed on Apr. 13, 2018.
Prior Publication US 2024/0123495 A1, Apr. 18, 2024
Int. Cl. B22F 1/052 (2022.01); A61L 27/04 (2006.01); A61L 27/06 (2006.01); B22F 1/065 (2022.01); B22F 9/08 (2006.01); B22F 10/25 (2021.01); B22F 10/28 (2021.01); B22F 10/34 (2021.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C22C 14/00 (2006.01); B33Y 80/00 (2015.01)
CPC B22F 1/052 (2022.01) [A61L 27/047 (2013.01); A61L 27/06 (2013.01); B22F 1/065 (2022.01); B22F 9/082 (2013.01); B22F 10/25 (2021.01); B22F 10/28 (2021.01); B22F 10/34 (2021.01); B33Y 70/00 (2014.12); C22C 14/00 (2013.01); B22F 2301/205 (2013.01); B22F 2304/10 (2013.01); B33Y 10/00 (2014.12); B33Y 80/00 (2014.12)] 23 Claims
OG exemplary drawing
 
1. A process for producing a three-dimensional article, the process comprising:
providing a metal powder; and
using the metal powder to build up the three-dimensional article layer by layer,
wherein the metal powder consists of:
a metal selected from the group consisting of,
tantalum and impurities,
titanium and impurities,
niobium and impurities,
an alloy consisting of tantalum, niobium and impurities,
an alloy consisting of titanium, niobium and impurities, and
an alloy consisting of tantalum, titanium, niobium and impurities,
wherein,
particles of the metal powder have a dendritic microstructure,
particles of the metal powder comprise an average aspect ratio ΨA of from 0.7 to 1, where ΨA=XFeret min/XFeret max.