Factors influencing the rate of cathodic disbonding of coatings

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3293484· OSTI ID:6661246

Steinsmo, U ^[1]; Skar, J I ^[2]

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1. SINTEF Corrosion Center, Trondheim (Norway)
2. Norsk Hydro a.s., Porsgrunn (Norway)

Cathodic disbonding on coated steel panels was studied. The coating was applied by airless spraying on blast-cleaned steel surfaces. The importance of electrolyte, polarization potential, dry film thickness, and temperature was investigated. The time dependence of disbonding was determined in a long-term test in natural seawater. Implications of the test results for the relevance of the ASTM G 8 test were reviewed. The ASTM G 8 test generally is considered an accelerated test because the applied potential is as low as [minus]1,450 mV to [minus]1,550 mV vs a copper-copper sulfate (Cu-CuSO[sub 4]) reference electrode.

• OSTI ID: 6661246
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 50:12; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
423000 -- Engineering-- Marine Engineering-- (1980-)
ALLOYS
CARBON STEELS
CATHODIC PROTECTION
COATINGS
CORROSION PROTECTION
CORROSIVE EFFECTS
DAMAGE
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MEASURING METHODS
OXYGEN COMPOUNDS
PROTECTIVE COATINGS
SAMPLE PREPARATION
SEAWATER
STEELS
WATER