On the other hand, Fe-based self-fluxing alloy (FeCrSiB) matrix coatings showed better wear properties than NiCrSiB matrix ones [9-11].
As the coarsest cermet particles have larger sizes than the coarsest self-fluxing alloy ones, the loss of the cermet particles must be higher.
Addition of cermet particles to the FeCrSiB self-fluxing alloy allows to diminish its spallation and to decrease abrasive wear of the coating.
Sliding wear behaviour of laser clad coatings based upon a nickel-based self-fluxing alloy co-deposited with conventional and nanostructured tungsten carbide-cobalt hardmetals.
Wear resistant thermal sprayed composite coatings based on iron self-fluxing alloy and recycled cermet powders.
Composite coatings, produced by HVOF spraying on the basis of iron self-fluxing alloy powders with WC-Co reinforcement (ranging from 25 up to 50 vol%) were studied .
For comparison, the nickel self-fluxing alloy based coatings were studied and advantages of Fe-based coatings, reinforced by WC-Co hardmetal, were demonstrated considering the formation of structure with optimal properties (Fig.
Table 2 shows the chemical composition of the self-fluxing alloy powders of the powder composites.
Nickel- and iron-based self-fluxing alloy powder compositions, containing 25 wt% of hardmetal particles, were used.
NiCrSiB self-fluxing alloy forms a Ni-based matrix with WC hard particles (WC-Co hardmetal particles are practically dissolved in the Ni-based matrix).
Iron-based self-fluxing alloys are more suitable for producing self-fluxing alloy-based composite coatings containing recycled WC-Co hardmetal powder in comparison with the nickel-based ones.