Closed-cell polymer foams for corrosion control in confined metal spaces

Journal Article · Sat May 01 04:00:00 EDT 1999 · Corrosion

DOI:https://doi.org/10.5006/1.3284016· OSTI ID:6447272

Trzaskoma-Paulette, P P; Lambrakos, S G; Jones, III, H N ^[1]

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1. Naval Research Lab., Washington, DC (United States)

The use of closed-cell plastic polymer foams to control corrosion in hollow, irregular cavities of preexisting metallic structures or assemblages was explored. The method involved blocking the access of corrosive species to the interior surfaces by filling the empty spaces with an expanding, polymeric, rigid foam material. The fact that the foam could be injected from a remote location and then expanded to fill the void solved the problem of accessibility, which precluded the use of traditional corrosion preventive coatings in that it focused on postdesign applications of corrosion inhibition within confined regions. Results of laboratory seawater exposure tests using structural steel tubular specimens with interior surfaces that were as-manufactured, precorroded, or protected with a paraffin-based corrosion preventative and filled with a one-part polyurethane foam were discussed in the context of the foam's ability to prevent water penetration to the metal interface. Effectiveness of the method for corrosion control was demonstrated through visual comparisons of metal deterioration in treated and untreated specimens.

• OSTI ID: 6447272
• Journal Information: Corrosion, Journal Name: Corrosion Vol. 55:5; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CAVITIES
COATINGS
COLLOIDS
CORROSION PROTECTION
DISPERSIONS
FOAMS
HYDROGEN COMPOUNDS
IMPREGNATION
INTERFACES
IRON ALLOYS
IRON BASE ALLOYS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PLASTIC FOAMS
POLYMERS
SEAWATER
STEELS
WATER