Investigation of the Structure of Plasma and HVOF Sprayed Composite Coatings

The aim of the research was to compare the size, shape and distribution of the NiCrBSi and Fe₂O₃ powder particles. Of interest were the chemical and phase compositions of both the powders and structures obtained by plasma- or HVOF-spraying them. The experiments have shown that although the powders differ in structure and particle size, it is possible to use them to obtain composite coatings containing both ingredients. A phase analysis was conducted to study the different phase composition for both spray methods.