Title:
Zn-Al-Mg-PLATED STEEL SHEET AND METHOD FOR MANUFACTURING Zn-Al-Mg-PLATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2016/162982
Kind Code:
A1
Abstract:
A Zn-Al-Mg-plated steel sheet with a plated layer comprising 4-22 mass% of Al, 1.0-6.5 mass% of Mg, Mg also being ½ of Al or less in mass%, 0.001-1.000 mass% of Si along with the balance being Zn and impurities. The plated layer structure has Al primary crystals comprising cellular dendritic first Al primary crystals, the area ratio of which is 30-70% and the secondary axis spacing of which is 0.5-2.0 µm, microscopically equiaxed dendritic second Al primary crystals, the total area ratio of which is 30-70%, the main shaft length of which is 5-10 µm, and the secondary axis spacing of which is 0.5-2.0 µm, and petaloid third Al primary crystals, the main shaft length of which is 0.5-3.0 µm. The non-Al primary crystal structure is configured from a ternary eutectic structure of Al, Zn and Mg2Zn11.
Inventors:
HASHIMOTO SHIGERU (JP)
NAKAZAWA MAKOTO (JP)
NAKAZAWA MAKOTO (JP)
Application Number:
PCT/JP2015/061020
Publication Date:
October 13, 2016
Filing Date:
April 08, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
C23C2/06; C21D9/46; C22C18/04; C23C2/28
Domestic Patent References:
| WO2007108496A1 | 2007-09-27 |
Foreign References:
| JP2002047521A | 2002-02-15 | |||
| JP2009537701A | 2009-10-29 | |||
| JP2002275611A | 2002-09-25 |
Attorney, Agent or Firm:
Taiyo, Nakajima & Kato (JP)
Patent business corporation solar international patent firm (JP)
Patent business corporation solar international patent firm (JP)
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