(19)

(11)

EP 4 196 620 A1

(12)

(43) Date of publication: 21.06.2023 Bulletin 2023/25 (21) Application number: 21786784.5 (22) Date of filing: 24.09.2021

(51) International Patent Classification (IPC):  C22C 19/05(2006.01) C23C 30/00(2006.01) (52) Cooperative Patent Classification (CPC): C22C 19/056; C23C 30/00; C23C 28/00; C23C 28/3215; C23C 28/345; C23C 28/3455; C23C 4/18; C23C 4/06; C23C 4/073; C22C 30/00 (86) International application number: PCT/EP2021/076386 (87) International publication number: WO 2022/078733 (21.04.2022 Gazette 2022/16)

(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 Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 14.10.2020 EP 20201694 (71) Applicant: Siemens Energy Global GmbH & Co. KG 81739 München (DE)	(72) Inventors: LI, Xin-Hai 58272 Linköping (SE) DJORDJEVIC, Snezana 612 93 Finspng (SE)