Author： Rao Ram Mohan K. Mukherjee S. Roy S. K. Manna I.
Publisher： Maney Publishing
ISSN： 1743-2944
Source： Surface Engineering, Vol.24, Iss.1, 2008-01, pp. : 4-7
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Abstract
Plasma immersion ion implantation (PIII) of nitrogen on low alloy high carbon steel was carried out at low energy negatively biased (−1 kV) pulses with 3˙8 kHz repetition rate for 3, 4 and 5 h of cumulative duration at a high dose of 1023 nitrogen ions per m2. Following PIII, the plasma ion implanted samples were subjected to microhardness measurements, potentiodynamic polarisation tests in 1 wt-%NaCl solution and post-corrosion microstructural studies. PIII at 500°C for 3 h seems to yield the optimum combination of increase in both hardness and resistance to corrosion.
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