Serviços Personalizados
Journal
Artigo
Indicadores
- Citado por SciELO
- Acessos
Links relacionados
- Similares em SciELO
Compartilhar
Superficies y vacío
versão impressa ISSN 1665-3521
Superf. vacío vol.22 no.1 Ciudad de México Mar. 2009
Effect of duty cycle on surface properties of AISI 4340 using a pulsed plasma nitriding process
J. C. Díaz-Guillén, A. Campa-Castilla, S. I. Pérez-Aguilar, E. E. Granda-Gutiérrez, A. Garza-Gómez, J. Candelas-Ramírez, R. Méndez-Méndez
Corporación Mexicana de Investigación en Materiales Ciencia y Tecnología N. 790, Col. Saltillo 400, Coahuila, México.
Recibido: 26 de septiembre de 2008.
Aceptado: 9 de enero de 2009.
Abstract
Plasma nitriding is a glow discharge technique, which is widely used to improve the surface properties of steel and its alloys, such as wear, corrosion resistance and hardness; additionally, it can increase fatigue strength. The aim of this work is to evaluate the effect of duty cycle on the surface properties of AISI 4340 low alloy steel, in a pulsed plasma nitriding process. The effect of duty cycle (applying a 10 80 % tON interval) on the surface hardness, treatment depth, compounds zone width and crystalline phase composition will be discussed. It has been found that for nitriding process at 540 °C in a gas mixture 50 % N2 50 % H2 at a constant pressure, using a discharge voltage of -800 V, duty cycle has a negligible effect on crystalline phase composition, even though the influence on surface hardness, treatment depth and compounds zone width is evident.
Keywords: Surface modification; Plasma nitriding; White layer control.
DESCARGAR ARTÍCULO EN FORMATO PDF
References
[1] ASM International. ASM Handbook Heat Treating, 5th edition. USA (2001). [ Links ]
[2] D. Pye, Practical nitriding and ferritic nitrocarbuizing. ASM International. Ohio, USA (2003). [ Links ]
[3] T. Bell and Y. Sun. Surf. Eng. 6, 133 (1990). [ Links ]
[4] M. B. Karamis. Wear 147, 385 (1991). [ Links ]
[5] M. A. Bejar and C. Gonzalez. Matéria 8, 115 (2003). [ Links ]
[6] M. A. Pessin, M. D. Tier, T. R. Strohaecker, A. Bloyce, Y. Sun and T. Bell. Tribological Letters 8, 223 (2000). [ Links ]
[7] K. Ozbyzal and O. T. Inal. J. Mat. Sci. 21, 4318 (1986). [ Links ]
[8] H. Michel and T. Czerwiec. Surface and Coatings Technology 72, 103 (1995). [ Links ]
[9] A. M. Staines. Heat Treat Metals 4, 85 (1990). [ Links ]
[10] S. Y. Sirin, K. Sirin and E. Kaluc. Materials Characterization 59, 351 (2008). [ Links ]
[11] B. Podfornik, J. Vižintin and V. Leskovsek. Surface and Coatings Technology 108, 454 (1998). [ Links ]
[12] A. Çelik and S. Karadeniz. Surface and Coatings Technology 80, 283 (1996). [ Links ]
[13] B. Podgornik, J. Vižintin, O. Wänstrand, M. Larsson, S. Hogmark, H. Ronkainen, K. Holmberg. Wear 249, 254 (2001). [ Links ]
[14] P. Corengia, M. G. Traverso, D. G. Alonso-García, D. A. Egidi, G. Ybarra, C. Moina and A. Cabo. Matéria 9, 111 (2004). [ Links ]