No abstract

There may be induced AC voltage on the buried pipeline of oil and gas by power line electrified railway, resulting in "AC corrosion". Although the research on AC corrosion has lasted for 74 years, many important problems about this subject are, heretofore, not clear. In this paper, a new way viz. to investigate the AC corrosion on the basis of the theory of electric field in combination with that of the electrochemistry was proposed. New concept is hereby introduced; that is the electric-field corrosion. Under the effect of the field which varies swiftly and holds powerful intensity, the reactive process of internal electrochemistry powerful intensity, the reactive process of internal electrochemistry changes essentially, and the intensity of electric field is an important physical quantity.