Cavitation erosion and corrosion behavior of Ni–Al intermetallic coatings

Tribological behavior of Ni3Al alloy at dry friction and under sea water environment

“…In strong alkali solution, polarization resistance indicated that Ni 3 Al had more positive free corrosion potential and lower corrosion current than Ni and Ti and exhibited a wider passive region [23]. Furthermore, in NaCl electrolyte and HCl electrolyte, the Ni-Al coated specimens exhibited higher corrosion potential and lower corrosion current density than the bare AISI 1045 carbon steel [24].…”

Characterization and Wear Behavior of Heat-treated Ni3Al Coatings Deposited by Air Plasma Spraying

“…Different characteristics like heat resistance, fatigue resistance, cavitation resistance, and corrosion resistance can be enhanced by NiAl and Ni 3 Al intermetallic coatings (Ref [1][2][3][4][5]. It has been claimed in many studies that at high temperature, nickel aluminide coatings have high oxidation resistance and mechanical strength ( Ref 6,7).…”

Effect of ultrasonic cavitation erosion on corrosion behavior of high-velocity oxygen-fuel (HVOF) sprayed near-nanostructured WC–10Co–4Cr coating

“…Pumps, hydraulic turbines, ship propellers or any flow-handling component operated in seawater environment where cavitation erosion and corrosion take place simultaneously would suffer from the synergistic effect of both factors [4,5]. To solve this problem, great attentions have been paid to the selection of better materials, including engineering alloys [5][6][7], metals [8,9], and coatings [10][11][12], but the situation was still serious.…”

“…They showed that both electrochemical and mechanical factors were involved in cavitation erosion-corrosion process. Chang et al [11] found that Ni-Al intermetallic coatings deposited using cathodic arc plasma ion plating process can offer a strong film adhesion to the AISI 1045 carbon steel substrate and effectively reduce its cavitation erosion damage in 3.5 wt.% NaCl electrolyte and 3.5 wt.% HCl electrolyte. Hou et al [12] demonstrated that chemical reactivity in artificial seawater played a role in the cavitation erosion behavior of five kinds of HVOF sprayed coatings and three kinds of alloys.…”