Electrochemical Theory of Galvanic Corrosion / JW. Oldfield
- Conference Author:
- Galvanic Corrosion (1986 : Phoenix, AZ)
- Physical Description:
- 1 online resource (18 pages) : illustrations, figures, tables
- Additional Creators:
- Oldfield, JW., American Society for Testing and Materials, and ASTM International
- Restrictions on Access:
- Subscription required for access to full text. and License restrictions may limit access.
- Galvanic corrosion can be defined simply as that corrosion that occurs as a result of one metal being in electrical contact with another in a conducting corrosive environment. The corrosion is stimulated by the potential difference that exists between the two metals, the more noble material acting as a cathode where some oxidizing species is reduced, the more active metal, which corrodes, acting as the anode. To fully understand this process it is first necessary to understand the basic thermodynamics and kinetics of electrochemical reactions. These are considered with particular reference to exchange current densities and the factors that control them, linear and Tafel kinetics, concentration and mass transfer effects, and mixed potential theory. The practical side of galvanic corrosion and its relationship to electrochemical parameters is considered with particular reference to the most important cathodic processes, that is, oxygen reduction and hydrogen evolution, as they occur on engineering materials, for example, steel, stainless steel, copper base alloys, and so forth and to the general form of the anodic processes that occur. Finally the use of galvanic series as a predictive tool is discussed. In addition methods used to model galvanic situations with the aim of predicting corrosion are briefly mentioned and their advantages and limitations outlined.
- Dates of Publication and/or Sequential Designation:
- Volume 1988, Issue 978 (January 1988)
- 9780803150492 (e-ISBN), 9780803109810, and 0803109814
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 33.
- Other Forms:
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription., Full text article also available for purchase., and Also available in PDF edition.
- Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1988. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details:
- Mode of access: World Wide Web.
- Source of Acquisition:
- ASTM International PDF Purchase price USD25.
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