Corrosion protection of aluminium in marine environments

Because of its high strength/weight ratio, aluminium has a high potential for lightweight maritime constructions. There is, however, not sufficient information available with respect to the performance under corrosive loads. The project marinAL covers the following topics:  

–   Development of cathodic protection methods for aluminium. 

–   Protection of bolted connections between aluminium and other materials. 

–   Coating solutions for aluminium in seawater. 

–   Development of alternative, ecologically safe surface preparation methods.


Fundings: Federal Ministry of Economic Affairs and Climate Action (BMWK) and European Community (MarTERA) 

Main partners: Sintef Industry, Helmholtz-Zentrum hereon, Hydro ASA, Speira AS 

Contact: Jan Bertram 

Figure 1

Confocal laser image of an aluminium sample, which was blast-cleaned in Muehlhan’s laboratory.

Figure 2

Test arrangement for cathodic protection tests on coated aluminium samples (Sintef Industry, Trondheim, Norway).

Figure 3

Samples, coated in Muehlhan’s laboratory, under long-term outdoor exposure at Helgoland (North Sea).

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