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Accueil > Séminaires > Séminaires passés > Seminaires de 2014 > Advanced barrier layers under extreme conditions

Francisco Garcia (Center for Nano Science & Techology – Istituto Italiano di Tecnologia)

Advanced barrier layers under extreme conditions

Mercredi 2 avril, 16h, CSNSM Salle de réunion du Bât 108

In the framework of GIV nuclear systems cooled by Heavy Liquid Metals (HLMs), Al2O3 coatings are being developed for protecting steels from corrosion.

In the present project, fully dense and compact, amorphous/nanocrystalline Al2O3 coatings are grown by Pulsed Laser Deposition (PLD).
The mechanical properties of the coatings are assessed with high accuracy and precision by a combination of ellipsometry, Brillouin spectroscopy and nanoindentation, whereas the adhesive strength is evaluated by nanoscratch tests.
Corrosion aspects are examined by short- (500 hours) and mid-term (2000 hours) exposure to stagnant HLMs.
Concerning high-dose radiation damage, the performance of the alloy substrate-ceramic coating system is studied by irradiation with heavy ions at the Jannus platforms of Saclay and Orsay.
Post-test analysis are conducted by SEM, nanoindentation and TEM.

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