Enhancement of hardness and corrosion resistance of low alloy high carbon steel by plasma immersion ion implantation

Authors: Rao, Ram Mohan K.; Mukherjee, S.; Roy, S. K.; Manna, I.

Source: Surface Engineering, Volume 24, Number 1, January 2008 , pp. 4-7(4)

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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.

Keywords: STEEL; CORROSION RESISTANCE; PLASMA IMMERSION ION IMPLANTATION; NITROGEN; HARDNESS

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174329407X265875

Publication date: 2008-01-01

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