US 11,834,747 B2
Plated steel wire and manufacturing method for the same
Tae-Chul Kim, Gwangyang-si (KR); Jong-Sung Kim, Busan (KR); Sung-Hoon Kang, Busan (KR); Gwang-Weon Yu, Busan (KR); Il-Ryoung Sohn, Gwangyang-si (KR); and Jong-Sang Kim, Gwangyang-si (KR)
Assigned to POSCO CO., LTD, Pohang-si (KR); KISWIRE LTD., Busan (KR); and HONGDUK INDUSTRIAL CO., LTD., Pohang-si (KR)
Appl. No. 17/622,085
Filed by POSCO, Pohang-si (KR); KISWIRE LTD., Busan (KR); and HONGDUK INDUSTRIAL CO., LTD., Pohang-si (KR)
PCT Filed Jun. 26, 2019, PCT No. PCT/KR2019/007726
§ 371(c)(1), (2) Date Dec. 22, 2021,
PCT Pub. No. WO2020/262730, PCT Pub. Date Dec. 30, 2020.
Prior Publication US 2022/0251695 A1, Aug. 11, 2022
Int. Cl. C23C 2/06 (2006.01); C22C 18/00 (2006.01); C23C 2/26 (2006.01); C23C 2/38 (2006.01)
CPC C23C 2/06 (2013.01) [C22C 18/00 (2013.01); C23C 2/26 (2013.01); C23C 2/38 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A plated steel wire comprising:
a base steel wire; and
a zinc alloy plating layer,
wherein the zinc alloy plating layer contains, by wt %, 1.0 to 3.0% of Al, 1.0 to 2.0% of Mg, 0.5 to 5.0% of Fe, and a balance of Zn and unavoidable impurities,
the zinc alloy plating layer includes a Zn/MgZn2/Al ternary eutectic structure, a Zn single-phase structure, and an Fe—Zn—Al-based crystal structure, and
the Fe—Zn—Al-based crystal structure is formed adjacent to the base steel wire, and has an average thickness of ⅕ to ½ of an average thickness of the zinc alloy plating layer.