Surface Patterning of Low Carbon Steel via Dc Plasma Nitriding
Keila Christina Kleinjohann, Bruno Borges Ramos, Ana Maria Maliska

Abstract
The surface patterning by plasma nitriding treatment was applied in low carbon steel SAE 1004 and presented in this paper. The same grids used in sample preparation to Transmition Electron Microscopy (TEM) were placed on the surface of steel and DC plasma nitriding treatment was performed following the parameters: temperature of 540 °C, gas mixtures with 5%N2/95%H2 and 95%N2/5%H2, and time treatment of 2 hours. The samples were characterized by optical microscopy (OM), scanning electron microscopy (SEM) and, optical interferometry. The results showed presence of grid caused a patterning of the surface. Besides, the compound layer presented a discontinuity, which characterizes the feasibility of technique in the production of patterned low carbon steel parts.

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