NbC(N)-based Hardmetal Compositions as a Strategic Replacement Material for WC-Co(Cr) in Surface Engineering
Authors: M. Sc. Lukas Tegelkamp, Dr. Susan Conze, Dr.-Ing. Lutz-Michael Berger, M. Sc. Maximilian Grimm, Prof. Dr.-Ing. habil. Thomas Lampke
DOI: https://doi.org/10.53192/TSB20260145
Inspired by developments in powder metallurgy, in the present work four novel NbC(N)-based compositions with Fe- and Ni-based binders were developed and prepared as agglomerated and sintered feedstock powders. Microstructure, particle size distribution, phase composition, and melting behavior of these powders were studied. Coatings were deposited using an HVOF parameter set optimized for an NbC-FeCr powder. Coatings from established compositions (WC-10Co4Cr, Cr3C2-NiCr, (Ti,Mo)(C,N)-Ni) were sprayed for comparison. In addition to deposition efficiency (DE) determination, focus was made on analysis of the coating microstructures and tribological behavior under abrasive as well as sliding wear conditions. The results demonstrate that NbC(N)-based coatings possess a high potential as alternative coatings for wear protection and represent a promising alternative to WC-Co(Cr) coatings.
Pages: 45 - 52
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