Investigation of Microstructural and Tribological Properties of a Commercial Brake Pad

Abstract

In this study, micro and macro characterization of commercial brake pad by SEM, EDX, XRD and FTIR tests and determination of braking performance according to SAE J661 Test Procedure were aimed. The microstructure and spectrographic properties of the pad were compared with wear, density, surface roughness and hardness tests. In the study, it was determined that fibers, iron powders, oxides, vermiculite, graphite, barite and resin were homogeneously distributed in the microstructure and confirmed by the presence of :29 elements by EDX analysis. X-ray diffraction analysis revealed different morphologies and crystal forms in the test sample. The interaction of organic and inorganic compounds and functional groups of different elements were studied by FTIR analysis. In braking tests, the highest hot and cold coefficients of friction were 0.48 and 0.58, respectively, and the pad quality was determined as class G.