Lecture: Corrosion of Metallic Materials

Annalisa Acquesta


General introduction of corrosion phenomena. Corrosion mechanisms, principles of electrochemistry. Thermodynamics: Nerst equation, corrosion tendency and electrode potentials, Pourbaix diagrams. Kinetics: polarization and corrosion rate, causes of polarization.  Active-to-passive metals. Corrosion morphologies, crevice corrosion, pitting, stress corrosion, corrosion fatigue, intergranular corrosion, hydrogen embrittlement. Effect of metallurgical, mechanical, microbiological and environmental factors. Electrochemical tests for monitoring of corrosion phenomena. Description of mechanisms for types of corrosion for different metal and environment combination.