Enhanced energy deposition efficiency of glow discharge electron beams for metal surface treatment

The energy deposition efficiency and focal spot dynamics of electron beams produced by pulsed cold-cathode high-voltage glow discharges for metal surface treatment are investigated for two different cathode geometries. A concave cathode geometry in which the focusing is dominated by the convergence...

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Autor principal: Mingolo, Nélida
Otros Autores: Cesa, Y., Martínez, Oscar Eduardo, Etcheverry, Javier Ignacio, Rocca, J.J
Formato: Acta de conferencia Capítulo de libro
Lenguaje:Inglés
Publicado: IEEE 2000
Acceso en línea:Registro en Scopus
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100 1 |a Mingolo, Nélida 
245 1 0 |a Enhanced energy deposition efficiency of glow discharge electron beams for metal surface treatment 
260 |b IEEE  |c 2000 
270 1 0 |m Mingolo, Nelida; Universidad de Buenos Aires, Buenos Aires, Argentina 
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504 |a Ianno, N.J., Vedeyen, J.T., Chan, S.S., Streetman, B.J., Appl. Phys. Lett., , Plasma annealing of ion implanted semiconductors, vol. 39, pp. 622-625, 1981 
504 |a Moore, C.A., Rocca, J.J., Johnson, T., Collins, G.J., Russell, P.E., Appl. Phys. Lett., , Large area electron beam annealing, vol. 43, pp. 290-292, 1983 
504 |a Mingolo, N., Rocca, J.J., Mater. Res., , Production of amorphous metallic surfaces by means of a pulsed glow discharge electron beam, J. vol. 7, no. 5, pp. 1096-1099, 1992 
504 |a Ranea-Sandoval, H.F., Reesor, N., Szapiro, B.T., Murray, C., Rocca, J.J., IEEE Trans. Plasma Sci., Vol. PS, , Study of intense electron beams produced by high-voltage pulsed glow discharges, 15, pp. 361-374, Aug. 1987 
504 |a Etcheverry, J.I., Martínez, O.E., Mingolo, N., Appl. Phys., , Numerical modeling of materials processing application of a pulsed cold cathode electron gun, J. vol. 83, pp. 3856-3863, Mar. 1998 
504 |a Etcheverry, J.I., Mingolo, N., Rocca, J.J., Martínez, O.E., IEEE Trans. Plasma Sci., , A simple model of a glow discharge electron beam for materials processing, vol. 25, pp. 427-432, June 1997 
504 |a Mingolo, N., González, C.R., Martínez, O.E., Rocca, J.J., Appl. Phys., , Stabilization of a cold cathode electron beam glow discharge for surface treatment, J. vol. 82, pp. 4118-4120, Oct. 1997 
504 |a Rocca, J.J., Meyer, J.D., Farrell, M.R., Collins, G., Appl. Phys., , Glow discharge-created electron beams: Cathode materials designs, and technological applications, J. vol. 56, pp. 790-797, Aug. 1984 
504 |a Kobashi, K., Miyauchi, S., Miyata, K., Nishimura, K., Rocca, J.J., Mater. Res., , Etching of polycrystalline diamond films by electron beam assisted plasma, J. vol. 11, pp. 2744-2748, Nov. 1996 
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506 |2 openaire  |e Política editorial 
520 3 |a The energy deposition efficiency and focal spot dynamics of electron beams produced by pulsed cold-cathode high-voltage glow discharges for metal surface treatment are investigated for two different cathode geometries. A concave cathode geometry in which the focusing is dominated by the convergence of the electric field lines in the cathode fall region is compared with a flat cathode in which the focusing is exclusively caused by the self-generated magnetic field. Results of the treatment of AISI 4140 carbon steel samples show that the concave cathode geometry significantly increases the efficiency, reduces the threshold power necessary for melting, and is less sensitive to variations in the discharge parameters and sample position. The results of numerical modeling indicate that the observed increase in efficiency is caused by the longer persistence of the focal spot on the sample. The model can be used to predict the discharge parameters required for a desired treatment.  |l eng 
536 |a Detalles de la financiación: Universidad de Buenos Aires 
536 |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: Manuscript received June 10, 1999; revised October 12, 1999. This work was supported in part by the Universidad de Buenos Aires, CONICET, and the Agencia Nacional de Promoción Cientifica y Tecnológica. N. Mingolo and Y. Cesa are with the Laboratorio de Haces Dirigidos, Depar-tamento de Física, Facultad de Ingeniería, Universidad de Buenos Aires, 1063 Buenos Aires, Argentina (e-mail: nmingol@tron.fi.uba.ar). O. E. Martínez and J. I. Etcheverry are with the Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina. J. J. Rocca is with the Department of Electrical Engineering, Colorado State University, Fort Collins, CO 80523 USA. Publisher Item Identifier S 0093-3813(00)03663-8. 
593 |a Laboratorio de Haces Dirigidos, Departamento de Física, Universidad de Buenos Aires, 1063 Buenos Aires, Argentina 
593 |a Department of Electrical Engineering, Colorado State University, Fort Collins, CO 80523, United States 
690 1 0 |a CARBON STEEL 
690 1 0 |a CATHODES 
690 1 0 |a ELECTRIC FIELDS 
690 1 0 |a ELECTRON BEAMS 
690 1 0 |a ELECTRON GUNS 
690 1 0 |a ELECTRON IRRADIATION 
690 1 0 |a GLOW DISCHARGES 
690 1 0 |a MAGNETIC FIELDS 
690 1 0 |a MATHEMATICAL MODELS 
690 1 0 |a SURFACE TREATMENT 
690 1 0 |a ENERGY DEPOSITION 
690 1 0 |a PLASMA APPLICATIONS 
700 1 |a Cesa, Y. 
700 1 |a Martínez, Oscar Eduardo 
700 1 |a Etcheverry, Javier Ignacio 
700 1 |a Rocca, J.J. 
711 2 |c Piscataway, NJ, United States 
773 0 |d IEEE, 2000  |g v. 28  |h pp. 386-393  |k n. 2  |p IEEE Trans Plasma Sci  |x 00933813  |w (AR-BaUEN)CENRE-1895  |t IEEE Transactions on Plasma Science 
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