Tribological properties of aqueous solution of imidazoline borates

The tribological properties of imidazoline borate at different concentration and different load in water were evaluated using a four-ball test machine. The tribological test results showed that the imidazoline borates have good load carrying capacity and lubrication property. The rubbed surfaces were investigated using X-ray photoelectron spectroscopy (XPS) and electron probe microanalyzer (EPMA). The results showed that imidazoline borates reacted with the metal surface in tribological process and produced a complex film, which is composed of organic imidazolines and partially decomposed products.