The less corrosion-resistant paint (∼3 g)was mixed with 5 wt% (or in further experiments: 1–10 wt%) of the ground polyaniline powders and applied onto a clean sample of mild steel sample (MS, AISI 1212), 2 cm × 2 cm or 4 cm × 6 cm,using a scalpel-based method
opti-mized further