Tribological Properties of Lithium Grease with Layered Zirconium Phosphate

The tribological properties of the lithium grease with layered α-zirconium phosphates additives were evaluated oil steel-steel friction pair with a four ball tester.

The worn surfaces were characterized by scanning electron microscopy (SEM ), energy dispersive X- ray spectrometry (EDS) and 3D optical profiler to investigate the worn surface morphology, element composition and bulk worn loss. The results show that α-ZrP can exhibit a good performance of the lithium grease in anti-wear and anti-friction and bearing load-carrying capacity under extreme pressure.

The protective film formed on the worn surface during the friction process mainly contains α-ZrP, leading to a good tribological performance.

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