(19)

(11)

EP 2 171 116 A1

(12)

(43) Date of publication: 07.04.2010 Bulletin 2010/14 (21) Application number: 08762800.4 (22) Date of filing: 06.06.2008

(51) International Patent Classification (IPC):  C23C 2/02(2006.01) C23C 2/28(2006.01) C23C 2/06(2006.01) (86) International application number: PCT/IB2008/001462 (87) International publication number: WO 2009/004425 (08.01.2009 Gazette 2009/02)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 29.06.2007 EP 07290816 (71) Applicant: ArcelorMittal France 93200 Saint Denis (FR)	(72) Inventors: MATAIGNE, Jean-Michel F-60300 Senlis (FR) BERTRAND, Florence F-57160 Scy-Chazelles (FR) (74) Representative: Plaisant, Sophie Marie  ArcelorMittal France ArcelorMittal R&D Intellectual Property 1-5 rue Luigi Cherubini 93200 Saint-Denis 93200 Saint-Denis (FR)