US 11,872,622 B2
Nitinol nanofibers
Ji-Hoon Kang, Cheongju-si (KR)
Assigned to TINIKO CO., LTD., Cheongju-si (KR)
Appl. No. 18/017,027
Filed by TINIKO CO., LTD., Cheongju-si (KR)
PCT Filed Jul. 23, 2021, PCT No. PCT/KR2021/009536
§ 371(c)(1), (2) Date Jan. 19, 2023,
PCT Pub. No. WO2022/025532, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 10-2020-0093952 (KR), filed on Jul. 28, 2020.
Prior Publication US 2023/0241673 A1, Aug. 3, 2023
Int. Cl. B22F 1/054 (2022.01); C22C 19/00 (2006.01); B22F 1/16 (2022.01); B22F 1/17 (2022.01); A61L 31/14 (2006.01); C22F 1/10 (2006.01)
CPC B22F 1/0547 (2022.01) [A61L 31/14 (2013.01); B22F 1/16 (2022.01); B22F 1/17 (2022.01); C22C 19/007 (2013.01); C22F 1/10 (2013.01); A61L 2400/12 (2013.01); A61L 2400/18 (2013.01)] 10 Claims
 
1. A nitinol nanofiber made of an alloy of nickel and titanium, wherein the nitinol nanofiber has a nanofiber shape having a largest diameter in a range of 10 nm to 1,000, has a surface roughness formed over an area of 10% to 30% of the entire surface of the nitinol nanofiber, has an average roughness in a range of 0.5 nm to 40 nm, and has a roughness-formed region in which a height difference between top and bottom is in a range of 0.01 to 80 nm,
wherein the nitinol nanofiber comprises a metal oxide surface layer on a surface thereof, and
wherein the metal oxide surface layer contains 10 to 30 at.% of nickel, 10 to 50 at.% of titanium, 25 to 70 at.% of oxygen, and a total of 10 to 35 at.% of one or more elements selected from the group consisting of Mo, Fe, Al, C, and N.