The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2014
Filed:
Aug. 12, 2011
Shoichiro Taira, Fukuyama, JP;
Yoshiharu Sugimoto, Kurashiki, JP;
Yoichi Miyakawa, Fukuyama, JP;
Akira Gamou, Fukuyama, JP;
Masayasu Nagoshi, Fukuyama, JP;
Takashi Kawano, Kawasaki, JP;
Shoichiro Taira, Fukuyama, JP;
Yoshiharu Sugimoto, Kurashiki, JP;
Yoichi Miyakawa, Fukuyama, JP;
Akira Gamou, Fukuyama, JP;
Masayasu Nagoshi, Fukuyama, JP;
Takashi Kawano, Kawasaki, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
The invention provides a hot dip galvanized steel sheet which has: a hot dip galvanizing layer having a flat part on a surface thereof; and a film formed on the flat part. The film is composed of a compound containing Zn, Fe, and O, having an average film thickness A in a range from 10 to 100 nm determined by an element analysis of the film, and has {[Fe]/([Zn]+[Fe])} in the film in a range from 0.002 to 0.25, where [Zn] and [Fe] designate the content (% by atom) of Zn and Fe in the film, respectively. Since the hot dip galvanized steel sheet of the invention has excellent press-formability, bondability, and phosphatability, it is suitable for automobiles and electrical appliances.