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Hollow Cathode Gas Flow Sputtering of Ni x Al y Coatings on Ti‐6Al‐2Sn‐4Zr‐6Mo: Mechanical Properties and Microstructures
Author(s) -
Kohns Andreas,
Ortner Kai,
Jung Thomas
Publication year - 2009
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200800226
Subject(s) - materials science , coating , sputtering , microstructure , cathode , substrate (aquarium) , context (archaeology) , gas compressor , metallurgy , flow (mathematics) , composite material , forensic engineering , mechanical engineering , thin film , nanotechnology , mechanics , electrical engineering , engineering , paleontology , oceanography , physics , geology , biology
A W‐TiB 2 ‐multilayer erosion resistant coating with a Ni x Al y bond coat deposited by hollow cathode gas flow sputtering is under development for Ti6246 aero engine compressor blades. Blade vibrations in service can produce cracks in the coating propagating into the substrate and reducing the high‐cycle fatigue strength of the component. It is assumed, that this effect can be diminished by adapting the mechanical and morphological properties of the Ni x Al y bond coat. In this context, process parameter variations are performed and discussed.