Abstract:Seven standard oil samples with different concentration levels of wear particles were applied to research the method of test wear particles in lubricant based on EDXRF spectroscopy.By selecting appropriate characteristic elements,test parameters and test combinations of elements program,the method of test wear particles in lubricant based on EDXRF spectroscopy was established in subsection according to two kinds of mass fraction range of wear particles at 0~1×10-4 and 1×10-4~5×10-4,which includes the establishment of standard curves and analysis flows.The established testing method was used to monitor a diesel lubricant,and the monitoring and tracking ability of the method was verified.The oil samples from twenty six of same type equipments were selected to carry out a comparative analysis of the established EDXRF spectroscopy method,and the atomic emission spectroscopy method and the PQ ferromagnetic particle analysis method.The results show the established EDXRF spectroscopy method can effective monitor wear particles in lubricating oil,and has a special advantage to large wear particles.