Surface modification of an AISI 1045 steel by a nitriding and post-oxidation duplex process in pulsed DC plasma
Vol. 25 No. 3 (2012), Research Papers
Vol. 25 No. 3 (2012)

Surface modification of an AISI 1045 steel by a nitriding and post-oxidation duplex process in pulsed DC plasma

Research Papers
Published 2012-09-15
J. C. Díaz Guillén
Corporación Mexicana de Investigación en Materiales S.A. de C.V. Centro de Investigación en Materiales Avanzados S. C.
E. E. Granda Gutiérrez
Corporación Mexicana de Investigación en Materiales S.A. de C.V.
A. Campa Castilla
Corporación Mexicana de Investigación en Materiales S.A. de C.V.
S. I. Pérez Aguilar
Corporación Mexicana de Investigación en Materiales S.A. de C.V.
A. Garza Gómez
Corporación Mexicana de Investigación en Materiales S.A. de C.V.
J. Candelas Ramírez
Corporación Mexicana de Investigación en Materiales S.A. de C.V.
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Keywords

Plasma nitriding
Plasma oxidation
Electrochemical corrosion
Hardness. Nitruración iónica
Oxidación iónica
Corrosión electroquímica
Dureza.

How to Cite

Díaz Guillén, J. C., Granda Gutiérrez, E. E., Campa Castilla, A., Pérez Aguilar, S. I., Garza Gómez, A., & Candelas Ramírez, J. (2012). Surface modification of an AISI 1045 steel by a nitriding and post-oxidation duplex process in pulsed DC plasma. Superficies Y Vacío, 25(3), 166-170. Retrieved from https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/199
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Abstract

The Present work shows a study on the effect of “Pulsed Plasma Nitriding and Post-Oxidation” treatment on mechanical properties and electrochemical corrosion performance (3% NaCl solutions) of a steel AISI 1045. The effect of temperature and processing time on surface hardness, oxidized layer thickness, electrochemical corrosion rate and crystalline phases was evaluated. Results show that post oxidation treatment at 400°C during 30 minutes promotes a reduction of corrosion rate about 50% the corrosion rate of the untreated reference sample. This phenomenon is attributed to the growing of a oxide thin film (about 400 nm thickness) constituted mainly of magnetite (Fe3O4) on a nitrided layer compose by Fe3N/Fe4N. Nitriding post oxidation process increases the hardness and corrosion performance of a common steel with several applications in industy.     

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