Title:
めっき密着性に優れた合金化溶融亜鉛めっき鋼板とその製造方法
Document Type and Number:
Japanese Patent JP2010530028
Kind Code:
A
Abstract:
There are provided a galvannealed steel sheet used in an inner plate or an outer plate of an automobile, and a method for manufacturing the same. The galvannealed steel sheet having excellent adhesiveness to zinc coating layer has a galvannealed coating layer formed in at least one surface thereof, wherein a Fe content of the galvannealed coating layer is in a range from 5 to 9%, and has an eta phase and a zeta phase as a Zn-Fe phase. Also, the method for manufacturing a galvannealed steel sheet includes: galvanizing a steel sheet, and alloying the galvannealed steel sheet at a temperature of 470 to 530°C so that an alloyed coating layer has a Fe content of 5 to 9% and has an eta phase and a zeta phase as a Zn-Fe phase. The hybrid galvannealed steel sheet having advantages of both a galvanizing steel sheet (GI) and a galvannealed steel sheet (GA) may be useful to improve general physical properties such as weldability, powdering resistance, adhesion to a bond, etc.
Inventors:
Hong, Moon Hee
Anne, Jae Hyun
Cho, Yong Kun
Cho, Noiha
Han, Kwan Ham
Fan, gusum
Choi, Yang Min
Anne, Jae Hyun
Cho, Yong Kun
Cho, Noiha
Han, Kwan Ham
Fan, gusum
Choi, Yang Min
Application Number:
JP2010510191A
Publication Date:
September 02, 2010
Filing Date:
December 28, 2007
Export Citation:
Assignee:
POSCO
International Classes:
C23C2/06; C22C18/04; C22C38/00; C22C38/16; C22C38/32; C23C2/26; C23C2/28
Domestic Patent References:
| JP2004156111A | 2004-06-03 | |||
| JP2001247950A | 2001-09-14 | |||
| JP2003306756A | 2003-10-31 | |||
| JPH1068057A | 1998-03-10 | |||
| JP2004115886A | 2004-04-15 | |||
| JP2004269947A | 2004-09-30 | |||
| JPS5573826A | 1980-06-03 | |||
| JP2002205355A | 2002-07-23 | |||
| JP2002167656A | 2002-06-11 | |||
| JPH11302812A | 1999-11-02 | |||
| JP2004156111A | 2004-06-03 | |||
| JP2001247950A | 2001-09-14 | |||
| JP2003306756A | 2003-10-31 | |||
| JPH1068057A | 1998-03-10 | |||
| JP2004115886A | 2004-04-15 | |||
| JP2004269947A | 2004-09-30 | |||
| JPS5573826A | 1980-06-03 | |||
| JPH04232239A | 1992-08-20 | |||
| JP2007510811A | 2007-04-26 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Masakazu Ito
Yuko Hara
Masakazu Ito
Yuko Hara