Um estudo preliminar da relação entre ferrografia e análise de desgaste em sistemas lubrificados de metais com variados níveis de oxidação

Abstract

There are different techniques and methods for the evaluation of the wear of a component or mechanical system, the severity of wear can be evaluated from the observation of the surface of interest, it is also possible to use other methods such as analytical ferrography, which is the study of wear particles that are suspended in the lubricating oil of the system. Aiming to combine the different methodologies of wear analysis, a study was developed in which the techniques of analytical ferrography, optical interferometry and scanning electron microscopy were used to quantify the wear generated in samples by a reciprocal motion test made in a tribometer. For this purpose, samples of three varied materials were used: aluminum, which underwent an anodizing process generating a superficial oxide layer, stainless steel, and pearlitic steel; and ABNT 52100 steel balls as counter body. It was found at the end of the study that the analytical ferrography shows the wear of the tribological pair and not just of a surface, a result that was supported by the other methodologies applied.