BOPI 03 BR / 2025 REPERTOIRE NUMERIQUE 28 ________________________________________ (11) 21851 Consulter le mémoire (51) C23C 18/16 (2023.01); C23C 18/32 (2023.01); E21B 17/03 (2023.01) (21) 1202400434 - PCT/EP2023/063288 (22) 17/05/2023 (30) EP n° 22174655.5 du 20/05/2022 (54) Nickel Based Wear And Corrosion Protected Shank Adapter. (72) BLOMFELDT, Thomas (SE); LEANDERS, Benneth (SE); PORTIN, Johan (SE) et ANERUD, Marcus (SE) (73) Sandvik Mining and Construction Tools AB, Valsverksstråket 14 SE-811 34 Sandviken (SE) (74) S.C.P AKKUM, AKKUM & Associates, No. 1777, rue 6.261, Yaoundé 2, Auditorium Jean Paul II boulevard, Face Brigade de Gendarmerie, Mbankolo, B.P. 4966, YAOUNDE (CM). (57) A shank adapter to form part of a drilling assembly, the shank adapter comprising a longitudinal axis; an extemal surface; an internai surface; a threaded part provided at a forward end and a plurality of splines provided at a rearward end; and a machine part extending axiaily between the threaded part and the splines; wherein at least a part of the extemal surface is coated with a first corrosion protection layer comprising nickel; characterized in that: at least part of the first corrosion protection layer is coated with a polymer based sealant top layer.
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