Influence of the size of spraying powders on the microstructure and corrosion resistance of Fe-based amorphous coating

Characterisation of three-dimensional porosity in an Fe-based amorphous coating and its correlation with corrosion behaviour

“…These oxide inclusions changed the localised constituent and the uniformity of the passive film and further lowered its stability. Zhang et al [56] found that the different particle size of the feedstock powders changed the oxide inclusion content and significantly affected the corrosion resistance of the HVOF sprayed Fe-based amorphous coatings. Moreover, stress is generated when a sprayed particle impacts a substrate, which then deforms, solidifies and cools down rapidly to the 'actual' temperature [2].…”

Effect of feedstock particle sizes on wear resistance of plasma sprayed Fe-based amorphous coatings

“…A good melting extent of particles could then contribute to a compact microstructure and increased adhesion strength. Niu et al [13] and Zhang et al [14] pointed out that the coatings sprayed by coarse feedstock possessed low oxygen content and high surface roughness, and therefore exhibited excellent corrosion resistance. However, there is a lack of information concerning the effects of feedstock particle size on the wear resistance of Fe-based amorphous coatings.…”

Formation of carbon composite coatings by plasma spraying

“…It should be mentioned that there were many small ball-like particles with micrometer sizes on the coating surface. The existence of such structures is related to splash debris from the impacting graphite splats due to their low viscosity [31]. The coating obtained at a low power of 17.1 kW contains many non-regular shape fragments on the surface and the lowest carbon concentration.…”