Title:
DELAYED FRACTURE RESISTANT CHEMICALLY TREATED STEEL MATERIAL AND STRUCTURE USING THE SAME
Document Type and Number:
Japanese Patent JP2015209585
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a chemically treated steel material having delayed fracture resistance, inexpensive, simple, secure and capable of suppressing hydrogen generation on the surface of a high tensile steel sheet subjected to zinc plating or zinc alloy plating, and a structure using the same.SOLUTION: The chemically treated steel material having delayed fracture resistance has a chemically treated layer including 10-1000 mg/mof an amount of bismuth in terms of element mass as a metal element or a compound on the surface of a high tensile steel, and the structure uses the same. The high tensile steel is subjected to zinc plating or zinc alloy plating, and the bismuth is bismuth oxide particles having a diameter of 50-500 nm by a mode.
Inventors:
YAMAZAKI TAKAO
Application Number:
JP2014093464A
Publication Date:
November 24, 2015
Filing Date:
April 30, 2014
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C23C26/00; C23C22/50; C23C28/00
Domestic Patent References:
| JPH0570920A | 1993-03-23 | |||
| JP2011111675A | 2011-06-09 |
Foreign References:
| WO2009145088A1 | 2009-12-03 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Yoshihiro Kobayashi
Satoshi Deno
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Yoshihiro Kobayashi
Satoshi Deno