Title:
複層めっき鋼板
Document Type and Number:
Japanese Patent JP7460887
Kind Code:
B2
Abstract:
To provide a highly anticorrosive multi-layer plated steel sheet.SOLUTION: A multi-layer plated steel sheet (10) has a base material steel sheet (1), a lower layer (2) and an upper layer (3). The upper layer (3) has a penetration part (20) in which an interface with the lower layer (2) is positioned furthermore to the base material steel sheet (1) side than other area. The penetration part (20) has a first area (21) having an Al concentration of 30% or more in terms of mass%. A diffusion layer (30) having an Al concentration reducing gradually from the lower layer (2) toward the first area (21) is formed between the first area (21) and the lower layer (2).SELECTED DRAWING: Figure 3
Inventors:
Masaaki Uchiyama
Takahide Hayashida
Shinya Furukawa
Takao Tsujimura
Yasunori Hattori
Takahide Hayashida
Shinya Furukawa
Takao Tsujimura
Yasunori Hattori
Application Number:
JP2020021684A
Publication Date:
April 03, 2024
Filing Date:
February 12, 2020
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C23C2/12; C22C18/04; C22C21/02; C23C2/06; C23C2/26
Domestic Patent References:
| JP2010144193A | ||||
| JP55006435A | ||||
| JP11106885A | ||||
| JP59001636A |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK