Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

Use GIVING24 at checkout to save 20% on eCourses and books (some exclusions apply)!

Localized Corrosion of Aluminum Alloy 5052 for Desalination Service

Picture for Localized Corrosion of Aluminum Alloy 5052 for Desalination Service
Available for download

Seawater desalination with waste heat from nuclear or fossil power plants is an attractive alternative for the production of potable water.1 Multi-effect desalination process (MED) relies on the evaporation of water from a thin film of seawater.2 The heat of condensation is used in the evaporation of water from a subsequent film of seawater.

Product Number: 51317--9151-SG
ISBN: 9151 2017 CP
Author: Mariano Kappes
Publication Date: 2017
Industries: Water/Wastewater , Energy Generation
$0.00
$20.00
$20.00

Aluminum alloys in the 3000 5000 and 6000 series present good corrosion resistance in seawater at temperatures up to 125ºC. In particular aluminum alloyAA 5052 (UNS A95052) results very attractive for desalination applications since its initial and maintenance costs are low. From an operational point of view crevice corrosion is a concern for the integrity of the aluminum evaporators due to the presence of rubber gaskets.The repassivation pitting potential ERP and the corrosion potential ECORR of AA 5052 were measured in deaerated 50000 ppm sodium chloride solutions at room temperature and at 90ºC. ERP was higher that ECORR at both temperatures in accord with results available in the literature. While those results predict absence of pitting corrosion in service no systematic studies of crevice corrosion at high temperature are available in the literature. Experience with other alloys predicts that the crevice repassivation potential is lower than ERP so a conservative evaluation of suitability of this alloy for desalination service from a corrosion perspective requires crevice corrosion measurements. Those measurements were performed with an artificial crevice former in sodium chloride solutions at room temperature and at 90ºC.

Keywords: aluminium alloys, crevice corrosion, pitting corrosion, repassivation potential

Aluminum alloys in the 3000 5000 and 6000 series present good corrosion resistance in seawater at temperatures up to 125ºC. In particular aluminum alloyAA 5052 (UNS A95052) results very attractive for desalination applications since its initial and maintenance costs are low. From an operational point of view crevice corrosion is a concern for the integrity of the aluminum evaporators due to the presence of rubber gaskets.The repassivation pitting potential ERP and the corrosion potential ECORR of AA 5052 were measured in deaerated 50000 ppm sodium chloride solutions at room temperature and at 90ºC. ERP was higher that ECORR at both temperatures in accord with results available in the literature. While those results predict absence of pitting corrosion in service no systematic studies of crevice corrosion at high temperature are available in the literature. Experience with other alloys predicts that the crevice repassivation potential is lower than ERP so a conservative evaluation of suitability of this alloy for desalination service from a corrosion perspective requires crevice corrosion measurements. Those measurements were performed with an artificial crevice former in sodium chloride solutions at room temperature and at 90ºC.

Keywords: aluminium alloys, crevice corrosion, pitting corrosion, repassivation potential

Product tags
Also Purchased
Picture for Documented Evidence of Significant Metal Loss in Aluminum Crevice Corrosion
Available for download

51316-7199-Documented Evidence of Significant Metal Loss in Aluminum Crevice Corrosion

Product Number: 51316-7199-SG
ISBN: 7199 2016 CP
Author: Brian DeForce
Publication Date: 2016
$20.00

The crevice corrosion of aluminum (99.999 wt. %) in neutral and mildly acidic solutions was investigated. Polarization curves were generated in simulated crevice solutions and potentiostatic crevice corrosion experiments with varying crevice gaps were performed.
Picture for 08261 Corrosion Resistance of Duplex Stainless Steels in Thermal Desalination Plants
Available for download

08261 Corrosion Resistance of Duplex Stainless Steels in Thermal Desalination Plants

Product Number: 51300-08261-SG
ISBN: 08261 2008 CP
Author: Sophie Jacques, Jerome Peultier, Jean Gagnepain, and Pierre Soulignac
Publication Date: 2008
$20.00
Picture for 05229 Internal Corrosion of Aluminum Compressed
Available for download

05229 Internal Corrosion of Aluminum Compressed Air Cylinder

Product Number: 51300-05229-SG
ISBN: 05229 2005 CP
Author: Gordon Ping Gu, Mimoun Elboujdaini, and Jian Li, CANMET- Natural Resources Canada
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support