Title:
STEEL SHEET FOR CANS AND PRODUCTION METHOD FOR STEEL SHEET FOR CANS
Document Type and Number:
WIPO Patent Application WO/2017/098994
Kind Code:
A1
Abstract:
Provided is a steel sheet for cans that has an excellent surface appearance. Also provided is a production method for the steel sheet for cans. The steel sheet for cans has, on the surface thereof, in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The chromium metal layer is deposited in an amount of 65-200 mg/m2, and the hydrous chromium oxide layer is deposited in an amount of 3-15 mg/m2 in terms of chromium. The chromium metal layer includes: a flat chromium metal layer that has a thickness of at least 7 nm; and a granular chromium metal layer that includes granular protrusions that are formed on the surface of the flat chromium metal layer. The maximum grain size of the granular protrusions is 100 nm or smaller. The number density of the granular protrusions per unit area is 10/μm2 or higher.
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Inventors:
NAKAGAWA YUSUKE (JP)
SUZUKI TAKESHI (JP)
SUTO MIKITO (JP)
KOJIMA KATSUMI (JP)
BABA YUYA (JP)
SUZUKI TAKESHI (JP)
SUTO MIKITO (JP)
KOJIMA KATSUMI (JP)
BABA YUYA (JP)
Application Number:
PCT/JP2016/085796
Publication Date:
June 15, 2017
Filing Date:
December 01, 2016
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C23C28/00; C25D5/16; C25D5/26; C25D9/10; C25D11/38; C25D21/12; C25F3/08
Foreign References:
| JPH03177599A | 1991-08-01 | |||
| JPH08209392A | 1996-08-13 | |||
| JPS63186894A | 1988-08-02 |
Other References:
See also references of EP 3388549A4
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
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