Techniques are developed for studying the mechanism of localized corrosion and protectivemeasures against such corrosion are suggested.The pH values and composition of the occluded sol-ution at different propagation stages are determined.Measurements of the critical pH value and cor-rosion rate inside the occluded cells are conducted.Potential-pH diagrams depicting kinetic andthermodynamic behaviors of occluded cell corrosion are being established.The mechanism of inhibi-tion of pitting and stress corrosion cracking have also been investigated. Techniques are developed for studying the mechanism of localized corrosion and protective measures against such corrosion are suggested. The pH values ​​and composition of the occluded sol-ution at different propagation stages are determined. Measurement of the critical pH value and cor-rosion rate inside the occluded cells are conducting. Potential-pH Charts depicting kinetic andthermodynamic behaviors of occluded cell corrosion are being established. The mechanism of inhibi- tion of pitting and stress corrosion cracking have also been investigated.