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Microstructure of advanced TiC-Based coatings prepared by laser cladding

: Techel, A.; Berger, L.-M.; Nowotny, S.


Journal of thermal spray technology 16 (2007), Nr.3, S.374-380
ISSN: 1059-9630
ISSN: 1544-1016
Fraunhofer IWS ()

The specific advantages of TiC as a hard material are its low density, high hardness, and its high alloyability in metal matrix composites. Agglomerated and sintered core-rim structured TiC-based powders were intensively studied in the last few years for thermal spray coating solutions. In the work described in this paper a powder with cubic (Ti,Mo)(C,N) hard phases and Co binder were used together with mechanically mixed NiBSi and CoCrMo powders to produce wear resistant coatings by laser cladding. Coatings with fine-grained hard particles were obtained. Basic process parameters and coating microstructures are described.