POTENTIOSTATIC CORROSION STUDIES OF IRON, TYPE-304 AND TYPE-321 STAINLESS STEEL.
Abstract
Important in the control and prevention of corrosion, electrochemical characteristics of iron and two types of stainless steel in various electrolyte systems were investigated as part of a long-range study of the mechanisms of the electrochemical and physical transformations that occur at electrode-electrolyte interfaces. The anodic potentiostatic polarization of iron was investigated in deaerated 1N sulfuric acid, deaerated and aerated borate buffer solution (pH 8.4), and in deaerated and aerated seawater. The effects of potential rate change and chloride ion concentration on polarization characteristics were studied in the borate buffer and sulfuric acid solutions. Polarization curves were determined for Type-321 stainless steel in deaerated 1N sulfuric acid and in deaerated borate buffer; the effect of chloride ion concentration was studied in both solutions. Polarization experiments were performed on Type-304 stainless steel in deaerated 1N sulfuric acid; the effect of cathodic pretreatment was studied. Electrochemical polarization curves have proved to be useful in predicting which of a group of alloys would be the most corrosion resistant in a particular environment. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1965
- Accession Number
- AD0624269
Entities
People
- Howard A. Porte
Organizations
- Naval Facilities Engineering Service Center