Improvement in nano-hardness and corrosion resistance of low carbon steel by plasma nitriding with negative DC bias voltageMohamed Mounes Alim, Nadia Saoula, Rabah Tadjine, Fayçal Hadj-Larbi, Aissa Keffous and Mohamed KechouaneEur. Phys. J. Appl. Phys., 75 3 (2016) 30801DOI: https://doi.org/10.1051/epjap/2016160130