| (19) |
 |
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(11) |
EP 1 726 684 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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11.07.2007 Bulletin 2007/28 |
| (43) |
Date of publication A2: |
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29.11.2006 Bulletin 2006/48 |
| (22) |
Date of filing: 19.05.2006 |
|
| (51) |
International Patent Classification (IPC):
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| (84) |
Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE
SI SK TR |
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Designated Extension States: |
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AL BA HR MK YU |
| (30) |
Priority: |
23.05.2005 JP 2005149160
|
| (71) |
Applicants: |
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- Dowa Mining Co., Ltd.
Chiyoda-ku
Tokyo 101-8617 (JP)
- Dowa Iron Powder Co.,Ltd.
Okayama-shi
Okayama 702-8053 (JP)
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| (72) |
Inventors: |
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- Nagasaki, Takeaki
Okayama-shi
Okayama 702-8053 (JP)
- Shigetoshi, Masashi
Okayama-shi
Okayama 702-8053 (JP)
|
| (74) |
Representative: Geyer, Ulrich F. |
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WAGNER & GEYER,
Patentanwälte,
Gewürzmühlstrasse 5
80538 München
80538 München (DE) |
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| |
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| (54) |
Shot material for mechanical plating, and high corrosion resistant coating using the
same |
(57) Shot material for mechanical plating is provided, comprising steel core particles
clad with an alloy comprising 1 to 5% by weight of aluminum, 3 to 15% by weight of
magnesium, preferably 5 to 15% by weight of magnesium, and the balance of zinc and
unavoidable impurities. The alloy may contain a total of 1% by weight of impurities.
An Fe-Zn alloy layer may be provided between the alloy cladding and the steel core.
The shot material may contain 3 to 80% by weight of iron. The preferable average diameter
of the shot particles is 100 to 600 µm.