@article{scholars6374,
             doi = {10.1080/15533174.2013.862653},
          volume = {45},
            note = {cited By 2},
          number = {7},
           title = {Surface Hardening of M2 High Speed Steel Using 50 Hz Pulsed DC Source with Nitrogen as a Base Gas},
            year = {2015},
           pages = {1057--1062},
         journal = {Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry},
       publisher = {Taylor and Francis Inc.},
        abstract = {Plasma processing provides a useful tool for modifying the metallic and non-metallic surfaces. Plasma ion nitriding of M2 high-speed steel was carried out by using a low pressure plasma chamber and a 50 Hz pulsed DC source. By keeping the nitrogen-hydrogen (60:40) mixture pressure constant at 3 mbar and varying the plasma treatment time from 1 to 4 h, the nitriding was done in the abnormal glow region at 600{\^A}oC substrate temperature. The resultant changes in surface properties of the plasma treated samples were investigated by using X-ray diffraction, scanning electron microscopy, and Vickers's microhardness testing. These investigations confirmed the formation of a compound layer on plasma exposed surface. The layer thickness was initially increased with nitriding time and then started to decrease after 2 h treatment. In X-ray diffraction data, a down-shift in the original diffraction peaks was noticed which confirms the nitrogen diffusion and formation of compound layer on the exposed surface. A significant improvement in surface hardness of tool steel was also seen especially after 2 h of plasma treatment. Copyright {\^A}{\copyright} Taylor \& Francis Group, LLC.},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924402479&doi=10.1080\%2f15533174.2013.862653&partnerID=40&md5=9d8696e6e97b255903bcd222e5b2331b},
            issn = {15533174},
          author = {Naz, M. Y. and Shukrullah, S. and Javaid, M. A. and Ghaffar, A. and Rehman, N. U.}
}