Initial exploration of tribological performance of novel triazine derivatives in water

Two novel ashless and non-phosphorus triazine derivatives, 2,4,6-tri-[N-hydroxyethyl-amino-methylenesulfanyl]-s-triazine and 2,4,6-tri-[N,N-bishydroxyethyl-amino-methylenesulfanyl]-s-triazine, were synthesised and their structures were analysed through elemental analysis. Their tribological behaviours in water were evaluated with a four-ball machine, and the results indicate that their wear resistance and load-carrying properties were excellent. The chemical features of the worn steel surface were observed and examined by means of inverted metallurgical microscopy and energy dispersive X-ray spectroscopy. The analytical results of typical elements on the worn steel surface demonstrated, during the lubricating process, that the additives reacted with counter-face metal and generated a boundary lubricating and protecting film containing elements of S, N and others, which contributes to improve the tribological properties of the test fluid. Copyright (C) 2009 John Wiley & Sons, Ltd.