US 12,226,976 B2
Manufacturing method of aluminum-based alloy plated steel
Jin-Keun Oh, Gwangyang-si (KR); Il-Ryoung Sohn, Gwangyang-si (KR); Seong-Woo Kim, Gwangyang-si (KR); and Jeom-Soo Shin, Gwangyang-si (KR)
Assigned to POSCO CO., LTD, Pohang-si (KR)
Filed by POSCO CO., LTD, Pohang-si (KR)
Filed on Jan. 8, 2024, as Appl. No. 18/406,848.
Application 18/406,848 is a division of application No. 18/121,249, filed on Mar. 14, 2023, granted, now 11,904,572.
Application 18/121,249 is a division of application No. 17/473,386, filed on Sep. 13, 2021, granted, now 11,654,654, issued on May 23, 2023.
Application 17/473,386 is a division of application No. 16/470,723, granted, now 11,167,527, issued on Nov. 9, 2021, previously published as PCT/KR2017/015295, filed on Dec. 21, 2017.
Claims priority of application No. 10-2016-0178532 (KR), filed on Dec. 23, 2016.
Prior Publication US 2024/0181748 A1, Jun. 6, 2024
Int. Cl. B32B 15/01 (2006.01); C22C 21/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C23C 2/12 (2006.01); C23C 2/26 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01)
CPC B32B 15/012 (2013.01) [C22C 21/02 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C23C 2/12 (2013.01); C23C 2/26 (2013.01); C23C 2/28 (2013.01); C23C 2/29 (2022.08); C23C 2/40 (2013.01); Y10T 428/12757 (2015.01)] 8 Claims
OG exemplary drawing
 
1. An aluminum-based plated steel, comprising:
a base steel; and
an Al-based plated layer on the base steel,
wherein the Al-based plated layer comprises an Al—Si crystallized phase, and
wherein an average grain size of the Al—Si crystallized phase is 4 μm or less.