Objective
The major objectives are to:
-eliminate the surface treatment baths which use toxic chromium VI based products
-increase the resistance to corrosion of the unclad materials in order to reach an equivalent level to that obtained using clad materials
-reduce the fatigue strength drop observed using conventional treatments.
The high performance aluminium alloys used in the aeronautical industry are very sensitive to corrosion. To prevent the development of this kind of damage, chemical or electrochemical surface treatments are currently employed before applying an organic coating.
The objectives of the aircraft manufacturers were to develop new surface treatments in order:
to solve the environmental and health care problems associated with surface treatment baths which contain hexavalent chromium based products;
to improve the performances of plate materials in the fields of fatigue strength and/or corrosion resistance by comparison with the conventional processes.
The following 5 different coating process combinations were selected and then optimized:
magnetron sputtering of a pure aluminium or an aluminiium zinc alloy coating;
evaporation of a pure aluminium coating;
deposition of an aluminium silicon alloy coating by electric arc;
sputtering of a silicon coating on a thin oxide layer formed by sulphuric acid anodizing;
aluminium oxide elaborated by etching and anodizing in alkaline baths.
An in depth characterization of the coatings was undertaken in order to improve knowledge of their properties in the fields of corrosion resistance, paint adherence, fatigue behaviour and stress corrosion cracking. The behaviour of the coatings was shown to be highly satisfactory.
The development of new surface treatment processes for high performance aluminium alloys used in the aeronautical industry is a key factor in improving the properties of these materials and solving environmental problems. The selected processes are:
-new applications of well-known processes, such as physical vapour deposition (magnetron sputtering, evaporation, low temperature cathodic arc deposition) and anodization
-original methods to modify the properties of the superficial oxide layers using ion beam bombardment such as ion implantation and ion beam mixing.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences inorganic chemistry transition metals
- engineering and technology mechanical engineering vehicle engineering aerospace engineering aircraft
- natural sciences chemical sciences inorganic chemistry post-transition metals
- engineering and technology materials engineering coating and films
- engineering and technology mechanical engineering vehicle engineering aerospace engineering aeronautical engineering
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Data not available
Coordinator
75781 Paris
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.