Abstract

MEZA-SALAZAR, Gerardo et al. Surface modification of a ferritic ductile iron through plasma nitriding. Dyna rev.fac.nac.minas [online]. 2021, vol.88, n.219, pp.203-209.  Epub Mar 15, 2022. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v88n219.94661.

This text describes the plasma nitriding of a ductile iron, to increase the surface hardness and improve its wear behavior. A ferritic ductile iron was used and processed with gases (N2 + H2) for 5 hours in a treatment chamber built at the UNAM Physics Institute. The treated samples were characterized using scanning electron microscopy, atomic force microscopy, microhardness and X-ray diffraction. The presence of Fe-N compounds was corroborated on the surface of the material. Modifications in surface morphology and a 30% increase in microhardness were also obtained.

Keywords : ductile iron; plasma (Ion) nitriding; microhardness; scanning electron microscopy; atomic force microscopy.

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