Influence of surfactants on the tribological behaviour of electroless Ni?P coatings
Abstract: Electroless nickel?phosphorus coating has been deposited onto plain carbon steel specimens by using an alkaline bath based on NiCl2 as source of nickel cations. The tribological behaviour under dry non-lubricated conditions has been evaluated by employing the pin-on-disc test method. Two surfactants namely sodium dodecyl sulphate and cetyl trimethyl ammonium bromide were added to the EN bath for the first time in the similar kind of study. The influence of the surfactants on the hardness, friction and wear behaviour of the coatings was investigated and compared against the samples produced without addition of surfactants.
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...6a).(3) On the other hand, with addition of zwitterionic surfactant, it was observed that the wear tracks become smoother on the worn surface, and there were no signs of delamination of the coating as evident from Fig....
...Moreover, to improve the coating efficiency and tribological properties passive chemical additives such as anionic surfactant sodium dodecyl sulphate and cationic surfactant cetyltrimethyl ammonium bromide were added, and its effects reported in previous research.(3,4) This work reports the results regarding wear behaviour of EN coating obtained from an alkaline solution containing the zwitterionic surfactant, namely 3-(n,ndimethyl myristyl ammonio) propane sulphonate or otherwise named as C14-SB added to an electrolyte bath....
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