Effects of pulsed magnetic field on the flight and impact of supersonic plasma spraying particles and the properties of coatings

In order to study the mechanism of pulsed magnetic field in supersonic plasma spraying process, the preparation of a Ni60 coating by pulsed magnetic field (PMF)-assisted supersonic plasma spraying was studied theoretically and experimentally to characterise the flight, impact, and spread behaviours of coat-ing powder particles as well as stacking results and thus gain valuable mechanistic insights. PMF appli-cation made the particle flight paths converge inward, the flight speed decrease, decelerated the temperature drop, improved the particle melting state, promoted impact location concentration, afforded a more uniform particle morphology, and hindered breaking and splashing to increase the hardness, bonding strength, residual compressive stress, and compactness of the deposited coating. The obtained results provide a solid basis for the study of PMF-assisted supersonic plasma spraying. (c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).