Corrosion coupon testing in natural waters: A case history dealing with reverse osmosis desalination of seawater
- LaQue Center for Corrosion Technology, Inc., Wrightsville Beach, NC (United States)
- Adamson (Wayne L.), Annapolis, MD (United States)
- Naval Surface Warfare Center, Annapolis, MD (United States)
This paper describes a series of corrosion tests performed to determine the general and localized corrosion behavior of two stainless alloys (UNS S31603 and UNS N08367) and 70/30 CuNi (UNS C71500) in three aqueous environments associated with advanced reverse osmosis (TO) desalination of natural seawater. In addition to seawater (the RO feed stock), the other environments included a 2nd-pass RO brine with lower chloride content and total dissolved solids than raw seawater, and an ultrapure 3rd-pass permeate. Two ASTM standards were reviewed for guidance in the design of the experiment. Since testing could be conducted in an operating prototype RO system, the test program followed the general procedures for an in-plant corrosion tests described by ASTM G4-95: Standard Guide for Conducting Corrosion Coupon Tests in Field Applications. This standard, along with G78-95: Standard Guide for Crevice Corrosion Testing of Iron-Base and Nickel-Base Alloys in Seawater and Other Chloride-Containing Environments, provided guidance in the selection of test specimens and mounting fixtures as well as crevice formers utilized. The G78-95 standard guide also provided considerations associated with the interpretation of the crevice corrosion test results.
- OSTI ID:
- 570178
- Report Number(s):
- CONF-9511298-; ISBN 0-8031-2025-7; TRN: IM9808%%40
- Resource Relation:
- Conference: 2. Symposium on corrosion testing in natural waters, Norfolk, VA (United States), 7 Nov 1995; Other Information: PBD: 1997; Related Information: Is Part Of Corrosion testing in natural waters: Second volume; Kain, R.M. [ed.] [LaQue Corrosion Services, Wrightsville Beach, NC (United States)]; Young, W.T. [ed.] [Corrpro Companies, Inc., West Chester, PA (United States)]; PB: 167 p.; ASTM special technical publication 1300
- Country of Publication:
- United States
- Language:
- English
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