Combined erosion and corrosion of thermal sprayed WC and CrC coatings

Erosion and erosion–corrosion performance of cast and thermally sprayed nickel–aluminium bronze

“…[13][14][15][16]. In general, plastic deformation was observed for ductile coatings, while brittle coatings eroded by cracking and chipping mechanisms.…”

“…Bardal et al [13,14] carried out erosion-corrosion tests on a range of metallic and cermet coatings, produced by a range of coating processes (chemical vapour deposition, thermal spray and HVOF). Erosion, flow corrosion and erosion-corrosion experiments were carried out using a rotating disc apparatus, in synthetic seawater.…”

Titanium and Titanium Alloys

“…In sand-laden seawater [134] as well as in coal-washing slurries [135], flow rates as high as 5 m/s gave minimal erosion rates. In the absence of general corrosion, the synergistic effect between erosion and corrosion is small and the metal removal rate can be attributed almost entirely to erosion [136,137]. As the particle coarseness and velocity are increased to the point that the titanium oxide film is not given sufficient time to re-form, the erosion-corrosion rate increases substantially [134,135].…”

Evaluation of the synergistic erosion-corrosion behaviour of HVOF thermal spray coatings

“…In spite of thorough analysis, the investigation does not isolate the contributing effects of erosion, corrosion and synergy to the overall volume loss under slurry impingement [30]. Bjordal et al [31] recorded the effects of synergy in thermally sprayed WC coatings with varying Cr and Co content. The authors conclude that under highly erosive conditions, the influence of corrosion is less significant with the effects of synergy present in coatings with low corrosion resistance (low Cr content).…”