Project: Safe use of aluminium in marine multi-material constructions

Acronym	MARINAL (Reference Number: MarTERA-2020_82)
Duration	01/07/2021 - 30/04/2024
Project Topic	The main objective of MARINAL is to strengthen and extend the use of aluminium (Al) alloys in marine applications offering a throughout “green” solution. An important obstacle against extended use of Al in marine applications is uncertainty about the corrosion properties. Marine and offshore design codes and standards are focused on steel and do not provide the necessary information on how to use Al. Therefore, Al is not even considered by marine engineers and designers. The focus of the project will therefore be fundamental studies of corrosion properties of standard Al alloys, including recycled alloys, in marine conditions and development of innovative environmentally friendly protection solutions. Three specific technical challenges have been identified to be cruical for increased use of Al in marine constructions, and will receive attention in his project: • Avoiding galvanic corrosion in joint between Al and other materials, C-steel and stainless steel in particular • Improved understanding of specific corrosion mechanism, i.e. (1) corrosion during wet-dry cyclic exposure in marine atmosphere and splash zone, (2) microbial induced corrosion, and (3) effect of temperature on corrosion in immersion conditions • Establishing methods, processes and parameters for corrosion protection of Al in marine constructions, i.e. (1) cathodic protection when immersed in seawater and (2) blast cleaning and spray painting for exposure in atmosphere and splash zone In addition, we will estimate the climatic and environmental impact of increased use of Al in marine constructions compared to other materials. Results from the project will be disseminated through scientific publications, seminars and workshops. After the project, the results will be used to improve and write new standards, specifications and recommended practices for using Al in marine constructions, providing marine engineers and designers with the necessary toolbox for safe and efficient use of Al.
Website	visit project website
Network	MarTERA
Call	MarTERA Call 2020

Project partner

Number	Name	Role	Country
1	Stiftelsen for industriell og teknisk forskning	Coordinator	Norway
2	Helmholtz-Zentrum Geesthacht – Zentrum für Material- und Küstenforschung GmbH	Partner	Germany
3	Norsk Hydro ASA	Partner	Norway
4	Muehlhan AG	Partner	Germany