CE08 - Matériaux métalliques et inorganiques et procédés associés

MEtal GlAsses functionalization by ultrashort Laser-Induced topology and phase Transition – MEGALIT

Multifunctionalization of metallic glasses surface by ultra short laser

The objective of the MEGALIT project is to explore the potential for improving the surface functionalities of metallic glasses (MG) known for their exceptional mechanical properties (close to those of metal) and their surface quality (similar to that of glass), in order to replace existing complex solutions with a mono to multifunctional material coating approach.

Towards a demonstration of the industrial relevance of thin-film of metallic glasses

The industrial relevance of bulk metallic glasses still suffers from detrimental weaknesses (such as insufficient toughness, limited industrial scale-up of treatment technologies and prohibitive cost) for large-scale applications. These drawbacks can be reduced by reducing their dimensionality through the development of thin layers and the treatment of surfaces by ultrashort laser.<br />In the MEGALIT project, the detailed strategy to address this challenge is to (i) carefully design the chemical composition of amorphous alloys for the targeted application; (ii) exploit thin-film PVD coating technologies that are particularly well suited to generate an amorphous metastable phase; and (iii) adapt the functionalization of the surface of the coatings with an appropriate treatment by ultrashort laser irradiation. Such an advanced process will be able to make two distinct modifications to the surface and sub-surface characteristics of the coating (depending on the irradiation conditions): a modification of the surface state (topography and roughness) to adapt the wetting properties (while maintaining the coating with an amorphous structure), or a controlled phase transition of the film to form a composite type nanostructure. Such a design of metallic glasses composites is a very recent trend in the field of metallic glasses where breaking performance in terms of mechanical properties (higher toughness than the best existing alloys) has been demonstrated.

This project is based on the skills of the IJL (Nancy) and MATEIS (Lyon) laboratories, specialists in thin-film amorphous metal alloys, the industrial partner IREIS (HEF group), a specialist in industrial coatings, and the Hubert Curien Laboratory (Saint-Etienne), a specialist in texturing and surface functionalization by ultrafast laser.

The outcome of this project will provide technological solutions in three application areas:
- Biomedical applications in order to design a competitive antibacterial and hydrophobic surface treatment providing complementary functions of corrosion and abrasion resistance.
- Aerospace, energy and chemical industries to increase the erosion resistance of substrates under severe operating conditions by combining improved mechanical properties and chemical stability.
- Energy storage technologies and process industries, addressing the technical problem of protecting components operating under corrosive conditions and requiring electrical conductivity as well as good mechanical strength.
The objective of the project is therefore based on demonstrating the potential of key technologies (KET photonics and advanced materials) through a multifunctional design approach rather than a single property, which will make thin metallic glasses remarkably attractive.

Strong scientific and technical impacts are expected from this multidisciplinary approach. The partners are in a position to positively exploit the results of the MEGALIT project towards the socio-economic world.

nc

The MEGALIT project has the objective to explore the potential to enhance functionalities of near-surface Metal Glasses (MG) recognized for their outstanding mechanical properties (Metal-like) and surface state (Glass-like), in order to substitute complex existing solutions by a single-multifunctional material coating approach.
Our strategy relies on the advantages that can provide the combination of Physical Vapor Deposition coating technology suitable for the deposition of thin films of MG which show better ductility than bulk material and ultra-short pulsed laser irradiation treatment enabling an improvement of some of the required properties at the near-surface of the materials.
The industrial relevance of bulk metallic glasses still suffers from detrimental weaknesses (such as insufficient toughness, limited industrial scale-up of the processing technologies and prohibitive cost) for large scale applications. However, these drawbacks can be reduced by decreasing their dimensionality, as in thin films elaboration. Within the MEGALIT project, the detailed strategy to address this challenge is to (i) carefully design the chemical composition of the amorphous alloys with regard to the targeted application ; (ii) exploit thin films PVD coatings technologies which are particularly adapted to generate amorphous metastable phase ; and (iii) tailor the functionalization of the coating surface with adequate ultrafast laser irradiation treatment. Such an advanced process could provide two distinct modifications of the surface and near-surface characteristics of the coating (depending on the irradiation conditions): a modification of the surface state (topography and roughness), to adapt the wetting properties (while maintaining the coating amorphous structure), or a controlled phase transition of the film to form a kind of composite-like nanostructure. Such design of metallic glass composites is a recent trend in the field of metallic glasses where breakthrough performances in terms of mechanical properties (toughness beyond that of the best existing alloys) have been demonstrated.

This project is based on the knowledge of the IJL and MATEIS laboratories and IREIS, specialists of amorphous metallic alloys in thin film, of the Hubert Curien laboratory, specialist of the surface functionalization using laser and of the industrial partner (IREIS - HEF group), specialist of the industrial coatings and laser surface texturation at industrial scale.
The outcome of this project will deliver technological solutions in three application fields:
- Bio-medical applications in order to design a competitive antibacterial and hydrophobic surface treatment ensuring complementary corrosion and abrasion-resistant functions.
- Aeronautics, energy and chemical industries to increase the erosion resistance of substrates (to sand, water, dust and potentially reactive particles) in severe operating conditions by combining enhanced mechanical properties (toughness, rigidity, hardness, fatigue resistance) and chemical stability.
- Energy storage technologies and process industries, addressing the technical issue of the protection of components operating in corrosive conditions and requiring also electrical conductivity as well as mechanical strength.

Consequently, the aim of the project relies on the demonstration of the potential of key enabling technologies (photonics and advanced materials) to address multifunctional-by-design issue, rather than a single property, which will make thin films metallic glasses distinctively attractive.
While strong scientific and technical impacts are expected from this multidisciplinary approach, the partners are in position to further exploit positively the MEGALIT project results toward the socio-economical world.

Project coordination

Florence GARRELIE (Laboratoire Hubert Curien)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

IREIS Institut de Recherches En Ingénierie des Surfaces
MATEIS Matériaux : Ingénierie et Science
IJL Institut Jean Lamour (Matériaux - Métallurgie - Nanosciences - Plasmas - Surfaces)
UJM/LabHC Laboratoire Hubert Curien

Help of the ANR 591,213 euros
Beginning and duration of the scientific project: January 2019 - 42 Months

Useful links

Explorez notre base de projets financés

 

 

ANR makes available its datasets on funded projects, click here to find more.

Sign up for the latest news:
Subscribe to our newsletter