Effect of spraying distance on the microstructure and mechanical properties of a Colmonoy 88 alloy deposited by HVOF thermal spraying

Fatigue behavior of a structural steel coated with a WC–10Co–4Cr/Colmonoy 88 deposit by HVOF thermal spraying

“…10g and h, i.e. 7 GPa for the contact hardness and 200 GPa for the elastic modulus, are very similar to those reported by La Barbera et al [36]. The hardness variations, which can be observed at the beginning of the indentation curves, are due to the presence of hard particles since the value tends to that characteristic of the mechanical properties of the WC (Fig.…”

“…As a consequence, the values of the mechanical properties can vary to a large extent, depending on the nature and size of the particles located under the indented material, i.e. the proportion of the matrix, single phase, unmelted particles and hard particles, which can be associated with the presence of defects such as pores or inter-lamellar cracks [35,36]. For this reason, 20 indentation experiments were performed randomly at the surface of the coating.…”

Influence of nanostructured ZrO2 additions on the wear resistance of Ni-based alloy coatings deposited by APS process

“…2 shows that Ni powders consist essentially in a Ni solid solution (ICDD card 01-1258) with some traces of chromium carbide (ICDD card 85-1281) and tungsten (ICDD card 47-1319). This indexation is in agreement with the results from the literature where similar phases were detected [23]. Nanostructured ZrO 2 powders are essentially formed by tetragonal zirconia.…”

Adhesion of FeCrNiBSi–(W–Ti)C wire-arc deposited coatings onto carbon steel substrates determined by indentation measurements and modeling

“…This method has been employed by many researchers in order to investigate the elastic and plastic properties of materials [19][20][21][22][23]. In recent years, different methods, based on both experimental and numerical studies, have been proposed to extract the elastic-plastic properties from the indentation data.…”

“…The coated surface analyzed by SEM revealed the presence of small voids and micro-crack. La Barbera-Sosa et al [22] showed that the amount of unmolten particles, presence of pores and cracks between lamellae are inversely affected by the increase of the spray distance. Fe-rich phases.…”