(19)

(11)

EP 2 619 345 A2

(12)

(88) Date of publication A3: 18.05.2012 (43) Date of publication: 31.07.2013 Bulletin 2013/31 (21) Application number: 11764922.8 (22) Date of filing: 22.09.2011

(51) International Patent Classification (IPC):  C23C 14/16(2006.01) C23C 14/58(2006.01) C23C 14/22(2006.01) (86) International application number: PCT/US2011/052790 (87) International publication number: WO 2012/040484 (29.03.2012 Gazette 2012/13)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 23.09.2010 US 385828 P (71) Applicant: Rolls-Royce Corporation Indianapolis, IN 46241 (US)	(72) Inventors: BOLCAVAGE, Ann Indianapolis IN 46220 (US) HELMINK, Randolph, C. Avon IN 46123 (US) (74) Representative: Vaughan, Christopher Tammo et al Harrison Goddard Foote LLP Belgrave Hall Belgrave Street Leeds LS2 8DD Leeds LS2 8DD (GB)