Stainless steel sheet including Ni and O-containing coating on surface and method for producing stainless steel sheet

Patent metadata

Field	Value
Publication number	US-10988853-B2
Application number	US-201716069094-A
Country	US
Kind code	B2
Filing date	Jan 5, 2017
Priority date	Jan 12, 2016
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

Stainless steel sheets including a Ni and O-containing coating on the surface that has excellent weld penetration characteristics and excellent crevice corrosion resistance, and a method for producing such stainless steel sheets. A stainless steel sheet includes a Ni and O-containing coating on a surface of the stainless steel sheet. The Ni and O-containing coating has a coating weight of greater than or equal to 0.1 g/m 2 and less than or equal to 20 g/m 2 . The Ni and O-containing coating has a composition including, in at. %, Ni: greater than or equal to 25% and less than or equal to 60%, and O: greater than or equal to 40% and less than or equal to 70%.

First claim

The invention claimed is:

1. A stainless steel sheet comprising a Ni and O-containing coating on a surface of the stainless steel sheet,
wherein the Ni and O-containing coating has a coating weight of greater than or equal to 0.1 g/m 2 and less than or equal to 20 g/m 2 , and
the Ni and O-containing coating has a composition including, in at. %, Ni: greater than or equal to 25% and less than or equal to 60%, and O: greater than or equal to 40% and less than or equal to 70%.

2. The stainless steel sheet according to claim 1 , wherein the stainless steel sheet comprises a ferritic stainless steel sheet.

3. The stainless steel sheet according to claim 1 , wherein the stainless steel sheet is used in an application in which a gap structure is formed.

4. The stainless steel sheet according to claim 2 , wherein the stainless steel sheet is used in an application in which a gap structure is formed.

5. A method for producing the stainless steel sheet according to claim 1 , the stainless steel sheet comprising the Ni and O-containing coating on the surface of the stainless steel sheet,
the method comprising performing electrodeposition to form the Ni and O-containing coating on the surface of the stainless steel sheet.

6. A method for producing the stainless steel sheet according to claim 2 , the stainless steel sheet comprising the Ni and O-containing coating on the surface of the stainless steel sheet,
the method comprising performing electrodeposition to form the Ni and O-containing coating on the surface of the stainless steel sheet.

7. A method for producing the stainless steel sheet according to claim 3 , the stainless steel sheet comprising the Ni and O-containing coating on the surface of the stainless steel sheet,
the method comprising performing electrodeposition to form the Ni and O-containing coating on the surface of the stainless steel sheet.

8. A method for producing the stainless steel sheet according to claim 4 , the stainless steel sheet comprising the Ni and O-containing coating on the surface of the stainless steel sheet,
the method comprising performing electrodeposition to form the Ni and O-containing coating on the surface of the stainless steel sheet.

9. The method according to claim 5 , for producing the stainless steel sheet comprising the Ni and O-containing coating on the surface of the stainless steel sheet, wherein the electrodeposition comprises cathode electrolysis in a solution containing nitrate ions and Ni ions.

10. The method according to claim 6 , for producing the stainless steel sheet comprising the Ni and O-containing coating on the surface of the stainless steel sheet, wherein the electrodeposition comprises cathode electrolysis in a solution containing nitrate ions and Ni ions.

11. The method according to claim 7 , for producing the stainless steel sheet comprising the Ni and O-containing coating on the surface of the stainless steel sheet, wherein the electrodeposition comprises cathode electrolysis in a solution containing nitrate ions and Ni ions.

12. The method according to claim 8 , for producing the stainless steel sheet comprising the Ni and O-containing coating on the surface of the stainless steel sheet, wherein the electrodeposition comprises cathode electrolysis in a solution containing nitrate ions and Ni ions.

13. The stainless steel sheet according to claim 1 , wherein the stainless steel sheet displayed absence of outflow rust after 30 cycles were performed according to JASO M610.

14. The stainless steel sheet according to claim 1 , wherein the stainless steel sheet after undergoing a TIG welding under the following conditions: no filler material; electrical current: 75 A; speed: 300 mm/minute; shielding gas: 100% Ar; shielding of 10 L/minute for the front side and no shielding for the back side, displayed a back bead over an entire weld length of 200 mm.

Assignees

• Jfe Steel Corp

Inventors

• Hirasawa Junichiro
• Ishikawa Shin
• Kami Chikara
• Ootsuka Shinji

Classifications

• B23K35/3602

  Carbonates, basic oxides or hydroxides · CPC title

• C25D9/10 Primary

  on iron or steel · CPC title