Abstract
Cold-sprayed pure cobalt coatings were deposited on carbon-steel substrate. Submicrometer particles for spraying were produced via cryomilling. Deposits were produced using different processing conditions (gas temperature and pressure, nozzle-to-substrate distance) to evaluate the resulting variations in grain size dimension, microhardness, adhesion strength, and porosity. The coating mechanical properties improved greatly with higher temperature and carrying-gas pressure. The coating microstructure was analyzed as a function of spraying condition by transmission electron microscopy (TEM) observations, revealing many different microstructural features for coatings experiencing low or high strain rates during deposition.
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Cavaliere, P., Perrone, A. & Silvello, A. Cold-Sprayed Nanostructured Pure Cobalt Coatings. J Therm Spray Tech 25, 1168–1176 (2016). https://doi.org/10.1007/s11666-016-0434-4
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DOI: https://doi.org/10.1007/s11666-016-0434-4