Invention Grant
- Patent Title: Hot-pressed member
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Application No.: US13504755Application Date: 2010-10-28
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Publication No.: US08663816B2Publication Date: 2014-03-04
- Inventor: Hiroki Nakamaru , Seiji Nakajima , Tatsuya Miyoshi , Hiroyuki Masuoka , Shinji Ootsuka
- Applicant: Hiroki Nakamaru , Seiji Nakajima , Tatsuya Miyoshi , Hiroyuki Masuoka , Shinji Ootsuka
- Applicant Address: JP Tokyo
- Assignee: JFE Steel Corporation
- Current Assignee: JFE Steel Corporation
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JP2009-247384 20091028; JP2010-102849 20100428; JP2010-218094 20100929
- International Application: PCT/JP2010/069643 WO 20101028
- International Announcement: WO2011/052797 WO 20110505
- Main IPC: B32B15/04
- IPC: B32B15/04 ; B32B15/18

Abstract:
A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.
Public/Granted literature
- US09040166B2 Hot-pressed member Public/Granted day:2015-05-26
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