Antigorite: Mineralogical characterization and friction performances

Reduction of friction and wear by lamellar solid powders in lubricating system is a valid approach that can allow to formulate energy saving lubricants. An experimental study has been made of the friction properties of antigorite powders having flaked-bladed morphology and 0.86 µm of the mean particle size. The results showed that antigorite transformed to forsterite (at 793 °C) and enstatite+forsterite (at 831 °C). The friction coefficient, the wear volume and power consumption of the driving motor in system with antigorite powders were respectively reduced by 19.3%, 33.33% and 4.5-5.0% as compared with base oils. Results are explained using particle spacing-polishing and friction-induced formation of like-ceramic film mechanism.