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:
Jul. 03, 2007
Filed:
Jan. 09, 2003
Kazuhiko Honda, Kimitsu, JP;
Akira Takahashi, Kimitsu, JP;
Yoshihiro Suemune, Kimitsu, JP;
Hidetoshi Hatanaka, Kimitsu, JP;
Tsuyoshi Miyake, Kimitsu, JP;
Wataru Yamada, Kimitsu, JP;
Koki Tanaka, Futtsu, JP;
Kazuhiko Honda, Kimitsu, JP;
Akira Takahashi, Kimitsu, JP;
Yoshihiro Suemune, Kimitsu, JP;
Hidetoshi Hatanaka, Kimitsu, JP;
Tsuyoshi Miyake, Kimitsu, JP;
Wataru Yamada, Kimitsu, JP;
Koki Tanaka, Futtsu, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
The present invention provides a plated steel material, said plated steel material having a plated layer which contains Al of 4% or more in mass, excellent in surface smoothness even when a cooling rate is low. In the present invention: a plated layer which contains Al of 4% or more in mass and has an Al-type intermetallic compound in an Al phase or abutting on an Al phase is formed on the surface of a steel material; in particular, high corrosion-resistance is secured in various environments by using a plated layer containing Al of 4 to 20% and Mg of 1 to 10% in mass with the balance consisting of Zn and unavoidable impurities or a plated layer containing Al of 4 to 20%, Mg of 1 to 10% and Si of 0.001 to 2% in mass with the balance consisting of Zn and unavoidable impurities; said plated layer contains an intermetallic compound having a melting point of 600° C. or higher by 0.001 to 0.5% in mass; and a plated steel material having an excellent surface smoothness is obtained by using an Al-type intermetallic compound wherein at least one of the lattice constants is in the range from 3 to 5 Å.