(19)
(11) EP 1 726 684 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.07.2007 Bulletin 2007/28

(43) Date of publication A2:
29.11.2006 Bulletin 2006/48

(21) Application number: 06010413.0

(22) Date of filing: 19.05.2006
(51) International Patent Classification (IPC): 
C23C 24/04(2006.01)
(84) Designated Contracting States:
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
Designated Extension States:
AL BA HR MK YU

(30) Priority: 23.05.2005 JP 2005149160

(71) Applicants:
  • Dowa Mining Co., Ltd.
    Chiyoda-ku Tokyo 101-8617 (JP)
  • Dowa Iron Powder Co.,Ltd.
    Okayama-shi Okayama 702-8053 (JP)

(72) Inventors:
  • Nagasaki, Takeaki
    Okayama-shi Okayama 702-8053 (JP)
  • Shigetoshi, Masashi
    Okayama-shi Okayama 702-8053 (JP)

(74) Representative: Geyer, Ulrich F. 
WAGNER & GEYER, Patentanwälte, Gewürzmühlstrasse 5
80538 München
80538 München (DE)

   


(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.





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