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Highly Corrosion Resistant Plated Steel Sheet Having Excellent Corrosion Resistance And Surface Quality, And Manufacturing Method Therefor
Abstract: One aspect of the present invention provides a plated steel sheet and a manufacturing method therefor, the plated steel sheet comprising: a base steel sheet; a Zn-Mg-Al-based plated layer provided on at least one surface of the base steel sheet; and an Fe-Al-based inhibition layer provided between the base steel sheet and the Zn-Mg-Al-based plated layer, wherein, on the surface of the Zn-Mg-Al-based plated layer, the total area fraction of an Al single phase and MgZn2 phase is 45-60%, and the area ratio of the MgZn2 phase to the Al single phase is 1.2-3.3.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
12 December 2023
Publication Number
39/2024
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Applicants
POSCO CO., LTD
6261, Donghaean-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37859
Inventors
1. KIM, Sung-Joo
c/o Pohang Iron & Steel Works, 6262, Donghaean-ro, Nam-gu
Pohang-si,
Gyeongsangbuk-do 37877
2. SOHN, Il-Ryoung
c/o Gwangyang Iron & Steel Works, 20-26, Pokposarang-gil
Gwangyang-si,
Jeollanam-do 57807
3. KIM, Tae-Chul
c/o Gwangyang Iron & Steel Works, 20-26, Pokposarang-gil
Gwangyang-si,
Jeollanam-do 57807
4. KIM, Kwang-Won
c/o Pohang Iron & Steel Works, 6262, Donghaean-ro, Nam-gu
Pohang-si,
Gyeongsangbuk-do 37877
5. HAN, Sang-Tae
c/o Pohang Iron & Steel Works, 6262, Donghaean-ro, Nam-gu
Pohang-si,
Gyeongsangbuk-do 37877
6. KIM, Myung-Soo
c/o Pohang Iron & Steel Works, 6262, Donghaean-ro, Nam-gu
Pohang-si,
Gyeongsangbuk-do 37877
7. CHO, Yong-Kyun
c/o Gwangyang Iron & Steel Works, 20-26, Pokposarang-gil
Gwangyang-si,
Jeollanam-do 57807
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202317084857-STATEMENT OF UNDERTAKING (FORM 3) [12-12-2023(online)].pdf | 2023-12-12 |
| 2 | 202317084857-REQUEST FOR EXAMINATION (FORM-18) [12-12-2023(online)].pdf | 2023-12-12 |
| 3 | 202317084857-PROOF OF RIGHT [12-12-2023(online)].pdf | 2023-12-12 |
| 4 | 202317084857-PRIORITY DOCUMENTS [12-12-2023(online)].pdf | 2023-12-12 |
| 5 | 202317084857-POWER OF AUTHORITY [12-12-2023(online)].pdf | 2023-12-12 |
| 6 | 202317084857-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [12-12-2023(online)].pdf | 2023-12-12 |
| 7 | 202317084857-FORM 18 [12-12-2023(online)].pdf | 2023-12-12 |
| 8 | 202317084857-FORM 1 [12-12-2023(online)].pdf | 2023-12-12 |
| 9 | 202317084857-FIGURE OF ABSTRACT [12-12-2023(online)].pdf | 2023-12-12 |
| 10 | 202317084857-DRAWINGS [12-12-2023(online)].pdf | 2023-12-12 |
| 11 | 202317084857-DECLARATION OF INVENTORSHIP (FORM 5) [12-12-2023(online)].pdf | 2023-12-12 |
| 12 | 202317084857-COMPLETE SPECIFICATION [12-12-2023(online)].pdf | 2023-12-12 |
| 13 | 202317084857-FORM-26 [26-02-2024(online)].pdf | 2024-02-26 |
| 14 | 202317084857-Others-050324.pdf | 2024-04-08 |
| 15 | 202317084857-GPA-050324.pdf | 2024-04-08 |
| 16 | 202317084857-Correspondence-050324.pdf | 2024-04-08 |
| 17 | 202317084857-FORM 3 [10-05-2024(online)].pdf | 2024-05-10 |