Coating processes – Spray coating utilizing flame or plasma heat – Continuous feed solid coating material
Patent
1997-07-25
1999-12-14
Paschall, Mark
Coating processes
Spray coating utilizing flame or plasma heat
Continuous feed solid coating material
427539, 21912159, 21912147, 21912152, 219 7615, 219 7616, B05D 108
Patent
active
060014261
ABSTRACT:
Wire arc spraying using repetitively pulsed, high temperature gas jets, usually referred to as plasma jets, and generated by capillary discharges, substantially increases the velocity of atomized and entrained molten droplets. The quality of coatings produced is improved by increasing the velocity with which coating particles impact the coated surface. The effectiveness of wire-arc spraying is improved by replacing the usual atomizing air stream with a rapidly pulsed high velocity plasma jet. Pulsed power provides higher coating particle velocities leading to improved coatings. 50 micron aluminum droplets with velocities of 1500 m/s are produced. Pulsed plasma jet spraying provides the means to coat the insides of pipes, tubes, and engine block cylinders with very high velocity droplet impact.
REFERENCES:
patent: 3212914 (1965-10-01), Lyle et al.
patent: 3312566 (1967-04-01), Winzeler et al.
patent: 4142089 (1979-02-01), Lau et al.
patent: 4370538 (1983-01-01), Browning
patent: 4374075 (1983-02-01), Yolton et al.
patent: 4689463 (1987-08-01), Shubert
patent: 4715261 (1987-12-01), Goldstein et al.
patent: 4788402 (1988-11-01), Browning
patent: 4821508 (1989-04-01), Burton et al.
patent: 4821509 (1989-04-01), Burton et al.
patent: 4948485 (1990-08-01), Wallsten et al.
patent: 4974487 (1990-12-01), Goldstein et al.
patent: 4990739 (1991-02-01), Zaplatynsky
patent: 5206059 (1993-04-01), Marantz
patent: 5262206 (1993-11-01), Rangaswamy et al.
patent: 5296667 (1994-03-01), Marantz et al.
patent: 5374802 (1994-12-01), Dorfman et al.
patent: 5425231 (1995-06-01), Burton
patent: 5442153 (1995-08-01), Marantz et al.
patent: 5451740 (1995-09-01), Hanus et al.
Fleischer, D., "Ceramic Insulators for Pulsed Electrothermal Discharges," Contract No. DNA001-86-C-0072, Jan. 30, 1987.
Burton, R.L., "Ceramic Insulators for Pulsed Electrothermal Devices," NASA Contract No. NAS 3-25272, May 25, 1989.
Shapiro, A.H., "The Dynamics and Thermodynamics of Compressible Fluid Flow," pp. 73-105, John Wiley & Sons, vol. 1.
Burton, R.L., et al., "Energy-Mass Coupling in High-Pressure Liquid-Injected Arcs," IEEE Transactions on Plasma Science, vol. 19, No. 2, Apr. 1991.
Uryukov, B.A., et al., "Application of Coatings Using Pulsed Plasma Flows," Surfaces and Coatings Tech., pp. 7-11, No. 48, 1991.
Longo, F.N., "Industrial Guide-Markets, Materials, and Applications for Thermal-Sprayed Coatings," Journal of Thermal Spray Tech., vol. 1(2), pp. 143-145, Jun. 1992.
Goldstein, S.A., et al., "Electric Cartridge Guns Using Fluids Heated by a Capillary Plasma Jet," GTD Report No. 83-11, Sep. 1983.
Burton, R.L., et al., "EMET Technology for Rail Launches," IEEE Transactions on Magnetics, vol. MAG-22, No. 6, pp. 1410-1415, Nov. 1986.
Witherspoon, F.D., et al., "GEDI EMET Railgun Experiments at GT-Devices," Contractor Report ARFSD-CR-91018, Nov. 1991.
Rizkalla, O.F., et al., "High-Pressure Hypervelocity Electrothermal Wind-Tunnel Performance Study and Subscale Tests," Journal of Propulsion and Power, pp. 731-738, vol. 9, No. 5, Sep.-Oct. 1993.
Witherspoon, F.D., et al., "Mach 10 to 20 Electrothermal Wind Tunnel Feasibility Study and Demonstration," Contract NASI-18450, Nov. 1991.
Brown, Alan S., "Spraying for Strength," Aerospace America, pp. 52-53, Jan. 1992.
Thorpe, M.L., et al., "A Pragmatic Analysis and Comparison of HVOF Processes," Journal of Thermal Spray Tech., vol. 1(2), pp. 161-170, Jun. 1992.
Thorpe, Merle L., "Thermal Spray Industry," Advanced Materials & Processes, pp. 50-61, May 1993.
Call, T., et al., "Protecting the Infrastructure with Thermal Spray Coatings-Technical Note," Journal of Thermal Spray Tech., vol. 2(4), pp. 323-327, Dec. 1993.
Neiser, R.A., et al., "Wire Melting and Droplet Atomization in a HVOF Jet," NTSC Proceedings, pp. 99-104, Sep. 1995.
Meyer, W.B., "Metal Spraying in the U.S.: A JTST Historical Paper," Journal of Thermal Spray, vol. 5(1), pp. 79-83, Mar. 1996.
Kowalsky, K.A., et al., "Characterization of Coatings Produced by the Wire-Arc-Plasma Spray Process", NTSC Proceedings, pp. 389-394, May 1991.
Steffens, H.-D., et al., "Recent Developments in Single-Wire Vacuum Arc Spraying," Journal of Thermal Spray, vol. 3(4), pp. 412-417, Dec. 1994.
Shcolnikov, E.Ya., et al., "Acceleration of Powder Materials in an Electrothermal Launcher," IEEE Transactions on Magnetics, vol. 31, No. 1, pp. 758-763, Jan. 1995.
Scholl, M., "Plasma Spraying with Wire Feedstock," NTSC Proceedings, pp. 491-496, Jun. 1994.
Steffens, H.-D., et al., "The Sonarc Process: Combining the Advantages of Arc and HVOF Spraying," Journal of Thermal Spray, vol. 3(4), pp. 398-403, Dec. 1994.
Sampson, E.R., "The Economics of Arc. vs. Plasma Spray for Aircraft Components," NTSC Proceedings, Jun. 1993.
Byrnes, L., et al., "Method and Apparatus for the Application of Thermal Spray Coatings onto Aluminum Engine Cylinder Bores," NTSC Proceedings, Jun. 1994.
Longo, F.N., "Industrial Guide-Markets, Materials, and Applications for Thermal-Sprayed Coatings," Journal of Thermal Spray Tech., vol. 1(2), pp. 143-145, Jun. 1992.
Berndt, C.C., et al., "Current Problems in Plasma Spray Processing," Journal of Thermal Spray Technology, vol. 1(4), pp. 341-356, Dec. 1992.
Steffens, H.-D., et al., "Recent Developments in Arc Spraying," IEEE Transactions on Plasma Science, vol. 18, No. 6, Dec. 1990.
Steffens, H.D., et al., "One Wire Vacuum Arc Spraying--A New Modified Process," NTSC Proceedings, pp. 395-398, May 1991.
Marantz, D.R., et al., "Wire-Arc Plasma Spray Process-Basic Principles and Its Versatility," NTSC Proceedings, pp. 381-387, May 1991.
H. Herman, "Plasma-sprayed Coatings," Scientific American, pp. 112-117, Sep. 1988.
Burton, R.L., et al., "Experiments on a Repetitively Pulsed Electrothermal Thruster," J. Propulsion and Power, vol. 6, No. 2, p. 139, 1990.
Marantz, David R., et al., "State of the Art Arc Spray Technology," NTSC Proceedings, pp. 113-118, May 1990.
Kincaid Russell W.
Massey Dennis W.
Witherspoon F. Douglas
Creighton Wray James
Narasimhan Meera P.
Paschall Mark
Utron Inc.
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