公开(公告)号：EP4092159A1

公开(公告)日：2022-11-23

申请号：EP21776218.6

申请日：2021-02-01

申请人： NIPPON STEEL CORPORATION

发明人： YAMANAKA, Shintaro ,  YOKOYA, Hirokazu ,  SATO, Yasuhiko ,  ANDO, Hiroaki ,  NAKASONE, Nobuo

IPC分类号： C23C28/00

摘要： To provide a Sn-based plated steel sheet capable of exhibiting superior corrosion resistance, yellowing resistance, coating film adhesiveness, and sulphide stain resistance without using a chromate film. A Sn-based plated steel sheet of the present invention includes: a steel sheet; a Sn-based plating layer located on at least one surface of the steel sheet; and a coating layer located on the Sn-based plating layer, wherein the Sn-based plating layer contains 1.0 g/m 2 to 15.0 g/m 2 of Sn per side in terms of metal Sn, the coating layer contains zirconium oxide, and a content of the zirconium oxide is 1.0 mg/m 2 to 10.0 mg/m 2 per side in terms of metal Zr, the zirconium oxide includes zirconium oxide with an amorphous structure, and a crystalline layer whose main component is zirconium oxide with a crystalline structure is present on an upper layer of the zirconium oxide with the amorphous structure.