Effect of service conditions on corrosion performance of alloy CN 108 tubes in MSF desalinators

G. Gusmano*, Enrico Traversa, C. Simoncelli, R. Cigna

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Results of tests performed on CN 108 alloy tubes in a desalinator and in a test loop, showed that the main corrosion cause has to be ascribed to incorrect service conditions. Both high chlorination and no chlorination cause a rapid increase of the alloy corrosion potential from the first days and pitting initiation of tube samples with different superficial finish (as received and pickled). Moderate chlorine dosage (free residual chlorine ≤ 0.5 ppm) is effective to avoid that rapid increase of Ecorr and pitting initiation. The presence of a thermal Mn-rich oxide film is not harmful by itself; however, in concurrence with incorrect service conditions it can contribute to the pitting corrosion initiation.

Original languageEnglish (US)
Pages (from-to)457-471
Number of pages15
JournalMaterials Chemistry and Physics
Volume24
Issue number5
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Effect of service conditions on corrosion performance of alloy CN 108 tubes in MSF desalinators'. Together they form a unique fingerprint.

Cite this