Deposition and Characterization of Nanocomposition Cr3C2-TaC-NiCr Coating by Multi-Chamber Detonation Sprayer

Multi-chamber detonation sprayer (MCDS) was applied for deposition of nanocomposition Cr3C2-TaC-NiCr powder coatings on steel A29 1044 (Fe-0.45C-0.18Si-0.6Mn) substrate. Toshiba 50Cr3C2-20TaC-30NiCr powder was used to deposit of a coating. The coatings, microstructures, and phase compositions were characterized using SEM, OM, and XRD techniques. Measurement of the microhardness of samples was done with a microhardness tester DM–8B using a Vickers’s indenter with load on of 0.3 N. It was established that MCDS has provided the conditions for formation of a dense nanocomposition layer with porosity below 2 % and microhardness of 800 ± 25 HV0.3.