Review on Electrodeposited Ni–W Based Composite Coatings in High-Temperature Applications Concerning Oxidation Behavior

Contemporarily, Ni–W alloy-based coatings are being developed as an alternative to Cr-based coatings in high-temperature applications, rendering higher thermal stability, corrosion, and oxidation properties. Although a few research works have agreed that the Ni–W alloy coatings exhibit superior oxidation performance, the attempts to investigate the oxidation behavior and corresponding mechanisms at high temperatures are still limited. Also, the missing gaps in literature were left undone for the last two decades. Therefore, the current review intends to spotlight the significance of investigating oxidation behavior and elucidating oxidation mechanisms in Ni–W alloy-based coatings synthesized via the electrodeposition process. Also, a special discussion is highlighted in enlightening Ni–W alloy-based coatings' oxidation behavior in the perspective of elemental composition and the addition of metal oxide-nanoparticles. The oxidation behavior of Ni–W-based composite coatings was compared with other Ni-alloy coatings, and the respective oxidation mechanisms were systematically elaborated.