Electrochemical Research of the Multilayer Corrosion Resistant Material

The aim of the article is to research of the multilayer corrosion resistant material with «sacrificial pitting protection». The original chemical and electrochemical methods were developed for investigation of multilayer corrosion resistant material. It has been found that the size of free pitting corrosion zone is depending on the square of internal protection. The 12X18H10T steel’s potential change on the distance from the protector was measured. Results of research confirmed principle of “sacrificial pitting protection” and determined the direction of further tests.