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Phys.org — Chemistry · October 10, 2026 · On the brief until October 24, 2026

AI reveals how coating thickness changes the link between surface roughness and pitting resistance

Materials ScienceChemistry
THE AI ANGLE
Uncovering interactions between coating thickness and roughness

Researchers used machine learning on 90 steam-coated aluminum samples to predict pitting corrosion resistance. The model showed that the interaction between surface roughness and film thickness flips from positive to negative near 2,200 nanometers. Engineers must evaluate physical features together across growth regimes rather than assessing roughness in isolation.

Summary written by AI Business Lens with an AI model from the article at phys.org. It is not the article, and the publisher has not reviewed it. For publishers.

THE TEACHING ANGLE
Students can debate whether surface roughness reflects protective coverage or defect pathways as a coating grows thicker.

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