Testing Methods for Indoor and Outdoor Atmospheric Corrosion / C. Fiaud
- Conference Author:
- The Use of Synthetic Environments for Corrosion Testing (1986 : Teddington, Middlesex, England)
- Physical Description:
- 1 online resource (10 pages) : illustrations, figures, tables
- Additional Creators:
- Fiaud, C.
American Society for Testing and Materials
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- Simulation tests for indoor and outdoor atmospheric corrosion appear essential to reliably predict the behavior of designs and materials in operating environments. Chamber tests are preferentially conducted for indoor corrosion. Some results are given concerning the sulfidation of copper and silver by H2S (hydrogen sulfide) in the presence of additives such as NO2 (nitrogen dioxide) or Cl2 (chlorine molecule). It is shown that chemical reactions between gases are responsible for the acceleration of the rate of sulfidation of metals. Comparison with onsite measurements shows that several classes of test severities must be defined. In studying outdoor atmospheric corrosion, attention is presently focused on the use of electrochemical sensors, which allow the determination of times of wetness and corrosion rates. Chamber tests may be used in some special cases. An example is given for the behavior of metallic materials exposed to corrosion under storage conditions. The combination of chamber and electrochemical tests has led to some understanding of the mechanism of formation and spread of corrosion products for an Fe-Ni alloy. The alloy has a behavior intermediate between that of an active (iron-like) material and a self-passivated (stainless steel-like) one, depending on the aeration conditions of the surface.
- Dates of Publication and/or Sequential Designation:
- Volume 1988, Issue 970 (January 1988)
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 10.
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- Also available in PDF edition.
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- 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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