US 12,440,896 B2
3-D printed hydrophobic metallic nanocomposites
Troy Youngmin Ansell, Marina, CA (US); Andy Nieto, Morgan Hill, CA (US); and Justin Budan, Dubuwque, IA (US)
Assigned to The Government of the Unites States of America, as represented by the Secretary of the Navy, Alington, VA (US)
Filed by THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY, Arlington, VA (US)
Filed on Apr. 27, 2023, as Appl. No. 18/140,271.
Claims priority of provisional application 63/335,545, filed on Apr. 27, 2022.
Prior Publication US 2023/0347413 A1, Nov. 2, 2023
Int. Cl. B22F 9/04 (2006.01); B22F 10/28 (2021.01); B22F 10/43 (2021.01); B23K 15/00 (2006.01); B23K 15/06 (2006.01); B23K 26/00 (2014.01); B23K 26/14 (2014.01); B23K 26/144 (2014.01); B23K 26/342 (2014.01); B32B 5/16 (2006.01); B32B 15/01 (2006.01); B32B 15/04 (2006.01); B32B 15/18 (2006.01); B33Y 10/00 (2015.01); B33Y 40/10 (2020.01); B33Y 70/00 (2020.01); B33Y 70/10 (2020.01); B33Y 80/00 (2015.01); C22C 1/05 (2023.01); C22C 1/10 (2023.01); C22C 26/00 (2006.01); C22C 47/00 (2006.01); C22C 47/14 (2006.01); C22C 49/02 (2006.01); C22C 49/08 (2006.01); C22C 49/14 (2006.01); B22F 10/25 (2021.01); B23K 103/00 (2006.01); B23K 103/04 (2006.01)
CPC B22F 10/28 (2021.01) [B22F 9/04 (2013.01); B22F 10/43 (2021.01); B23K 15/0086 (2013.01); B23K 15/0093 (2013.01); B23K 15/06 (2013.01); B23K 26/0006 (2013.01); B23K 26/144 (2015.10); B23K 26/147 (2013.01); B23K 26/342 (2015.10); B32B 5/16 (2013.01); B32B 15/01 (2013.01); B32B 15/011 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); B33Y 10/00 (2014.12); B33Y 40/10 (2020.01); B33Y 70/00 (2014.12); B33Y 70/10 (2020.01); B33Y 80/00 (2014.12); C22C 1/05 (2013.01); C22C 1/10 (2013.01); C22C 1/1005 (2013.01); C22C 1/1084 (2013.01); C22C 26/00 (2013.01); C22C 47/00 (2013.01); C22C 47/14 (2013.01); C22C 49/02 (2013.01); C22C 49/08 (2013.01); C22C 49/14 (2013.01); B22F 2009/043 (2013.01); B22F 10/25 (2021.01); B22F 2301/35 (2013.01); B22F 2302/403 (2013.01); B23K 2103/05 (2018.08); B23K 2103/52 (2018.08); C22C 2026/002 (2013.01); Y10T 428/12576 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/12993 (2015.01)] 11 Claims
OG exemplary drawing
 
1. A 3D printed hydrophobic metallic component comprising:
multiple metallic layers deposited successively, wherein each metallic layer comprises a metallic surface and multiple asperities;
the multiple asperities comprising arrays of micropillars configured to create an air barrier between the metallic surface and a water droplet, wherein the air barrier induces a Cassie-Baxter state and hydrophobic effect;
the multiple asperities formed by a method comprising,
providing a composite powder, the composite powder generated by mixing a metal powder with a nanotube material in a high energy ball mill, and
melting, by selective laser melting, the composite powder to form a melt pool, wherein the melt pool disseminates the nanotube material, wherein the dispersed nanotube materials form arrays of micropillars;
purging, by an argon gas, the environment around the melt pool; and
cooling, by the argon gas, the melt pool.