Particle temperature and velocity for different thermal spraying processes[1]Schematics of cold sprayingSEM image of a cold sprayed titanium particle bonded to steel surface
Gas dynamic cold spraying or cold spraying (CS) is a coating deposition method. Solid powders (1 to 50 micrometers in diameter) are accelerated in a supersonic gas jet to velocities up to ca. 1200 m/s. During impact with the substrate, particles undergo plastic deformation and adhere to the surface. To achieve a uniform thickness the spraying nozzle is scanned along the substrate. Metals, polymers, ceramics, composite materials and nanocrystalline powders can be deposited using cold spraying.[2][3] The kinetic energy of the particles, supplied by the expansion of the gas, is converted to plastic deformation energy during bonding. Unlike thermal spraying techniques, e.g., plasma spraying, arc spraying, flame spraying, or high velocity oxygen fuel (HVOF), the powders are not melted during the spraying process.[1][4]
^ abCite error: The named reference stam was invoked but never defined (see the help page).
^Moridi, A.; Hassani-Gangaraj, S. M.; Guagliano, M.; Dao, M. (2014). "Cold spray coating: review of material systems and future perspectives". Surface Engineering. 30 (6): 369–395. doi:10.1179/1743294414Y.0000000270. hdl:11311/968457. S2CID 987439.
^Raoelison, R.N.; Xie, Y.; Sapanathan, T.; Planche, M.P.; Kromer, R.; Costil, S.; Langlade, C. (2018). "Cold gas dynamic spray technology: A comprehensive review of processing conditions for various technological developments till to date". Additive Manufacturing. 19: 134–159. doi:10.1016/j.addma.2017.07.001.
^Daroonparvar, Mohammadreza; Bakhsheshi-Rad, Hamid Reza; Saberi, Abbas; Razzaghi, Mahmood; Kasar, Ashish K; Ramakrishna, Seeram; Menezes, Pradeep L.; Misra, Manoranjan; Ismail, Ahmad Fauzi; Sharif, Safian; Berto, Filippo (August 2022). "Surface modification of magnesium alloys using thermal and solid-state cold spray processes: Challenges and latest progresses". Journal of Magnesium and Alloys. 10 (8): 2025–2061. doi:10.1016/j.jma.2022.07.012. hdl:11250/3045659.
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