Morphological Analysis of Surface Degradation in Phenolic Friction Composites Using Image Processing Techniques
DOI:
https://doi.org/10.31891/2079-1372-2025-116-2-54-61Keywords:
composites, brake pads, corrosion, surface morphology, cracks, microstructural degradationAbstract
This study investigates the surface degradation of phenolic-based brake friction composites under corrosive NaCl environments, emphasizing morphological analysis through digital image processing. The specimens were subjected to both vapor-phase and immersion conditions to simulate real-world corrosion scenarios. Surface changes were characterized via optical microscopy, Otsu-based grayscale binarization, and roughness profiling. The results indicated that vapor-phase exposure caused more uniform corrosion, but with smoother surfaces, while immersion led to localized and irregular damage. Post-corrosion dry friction tests showed a marked reduction in the coefficient of friction, attributed to surface smoothing and lubricious corrosion product formation
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