1M.S. Ramaiah Institute of Technology, MSR Nagar, Bangalore-560054
R.L. Jalappa Institute of Technology, Doddaballapur, Bangalore-561203
*Corresponding Authors Email: saarudi@yahoo.com, aarudirs@gmail.com
Online published on 20 February, 2017.
Chromium-Phosphorous and Nickel-Chromium-Phosphorous coatings were developed by electroless process, using different complexing agents. The action of these complexing agents was synergistic in nature, giving good quality coating. The corrosion resistance of the coatings was evaluated by galvanostatic polarization, impedance and salt spray tests. The coatings offered good corrosion resistance in acidic medium. Microhardness of the Chromium-Phosphorous and Nickel-Chromium-Phosphorous coatings was measured and it is found that incorporation of nickel improved hardness as well as corrosion resistance.
Electroless, Corrosion, Complexingagents, Polarization, Saltspray, Microhardness
