Abstract
Copper powder was sprayed by the cold gas-dynamic method. In-flight particle velocities were measured with a laser two-focus system as a function of process parameters such as gas temperature, gas pressure, and powder feed rate. Mean particle velocities were uniform in a relatively large volume within the plume and agreed with theoretical predictions. The presence of a substrate was found to have no significant effect on in-flight particle velocities prior to impact. Cold-spray deposition efficiencies were measured on aluminum substrates as a function of particle velocity and incident angle of the plume. Deposition efficiencies of up to 95% were achieved. The critical velocity for deposition was determined to be about 640 m/s for the system studied.
Similar content being viewed by others
References
R.C. Dykhuizen, M.F. Smith, D.L. Gilmore, R.A. Neiser, X. Jiang, and S. Sampath, Impact of High Velocity Cold Spray Particles, J. Therm. Spray Technol., Vol 8 (No. 4), 1999, p 559–564
P. Alkimov, V.F. Kosarev, and A.N. Papyrin, A Method of Cold Gas-Dynamic Deposition, Sov. Phys. Dokl., Vol 35 (No. 12), 1990, p 1047–1049, translation American Institute of Physics, 1991
A.P. Alkimov, A.N. Papyrin, V.F. Kosarev, N.I. Nesterovich, and M.M. Shuspanov, Gas Dynamic Spraying Method for Applying a Coating, U.S. patent 5,302,414, 12 April 1994
A.O. Tokarev, Structure of Aluminum Powder Coatings Prepared by Cold Gas-Dynamic Spraying, Met. Sci. Heat Treat., Vol 38 (No. 3–4), 1996, p 136–139
R.C. McCune, A.N. Papyrin, J.N. Hall, W.L. Riggs, and P.H. Zajchowski, An Exploration of the Cold Gas-Dynamic Spray Method for Several Materials Systems, Advances in Thermal Spray Science and Technology, C.C. Berndt and S. Sampath, Ed., ASM International, 1995, p 1–5
R.C. McCune, W.T. Donoon, E.L. Cartwright, A.N. Papyrin, E.F. Rybicki, and J.R. Shadley, Characterization of Copper and Steel Coatings Made by the Cold Gas-Dynamic Spray Method, Thermal Spray: Practical Solutions for Engineering Problems, C.C. Berndt, Ed., ASM International, 1996, p 397–403
T.H. VanSteenkiste et al., Kinetic Spray Coatings, Surf. Coat. Technol., Vol 111, 1999, p 62–71
R.C. Dykhuizen and M.F. Smith, Gas Dynamic Principles of Cold Spray, J. Therm. Spray Technol., Vol 7 (No. 2), 1998, p 205–212
M.F. Smith, T.J. O’Hern, J.E. Brockmann, R.A. Neiser, and T.J. Roemer, A Comparison of Two Laser-Based Diagnostics for Analysis of Particles in Thermal Spray Streams, Advances in Thermal Spray Science and Technology, C.C. Berndt and S. Sampath, Ed., ASM International, 1995, p 105–110
A.R. Lopez, B. Hassan, W.L. Oberkampf, R.A. Neiser, and T.J. Roemer, Computational Fluid Dynamics Analysis of a Wire-Feed, High-Velocity Oxygen-Fuel (HVOF) Thermal Spray Torch, J. Therm. Spray Technol., Vol 7 (No. 3), 1998, p 374–382
R.H. Sabersky, A.J. Acosta, and E.G. Hauptmann, Fluid Flow: A First Course in Fluid Mechanics, 3rd ed., Macmillan, 1989
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gilmore, D.L., Dykhuizen, R.C., Neiser, R.A. et al. Particle velocity and deposition efficiency in the cold spray process. J Therm Spray Tech 8, 576–582 (1999). https://doi.org/10.1361/105996399770350278
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1361/105996399770350278