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Nano-Carbonio su acciaio: film di nanotubi di carbonio per rivestimenti impermeabili e protettivi per acciai

Nano-Carbonio su acciaio: film di nanotubi di carbonio per rivestimenti impermeabili e protettivi per acciai

The project aims to improve the structural, mechanical and durability properties of the steels and the cements that contain them using nanostructured carbon materials. At present, the strength of the reinforced concrete over time is limited by the oxidation and corrosion processes of the steels inside it. The basic idea is to coat the steels with carbon-based nanomaterials to prolong the duration time. The industrial process we propose is low cost and consists of heat treatment, at about 650-700 °C, of the steels that are exposed (before their final cooling) to methane gas flows methane (CH4) so as to form on their surface a homogeneous nano-metric layer (film) of carbonaceous products in the form of nanotubes and carbon fibres. Nanostructure films adhere to steel permanently and preserve it from external agents in an almost total manner due to their graphitic character. Furthermore, the carbonaceous structures are hydrophobic, protect the steel from the corrosive action of external agents such as water (including saline water), and increase its tensile strength. Furthermore, the carbonaceous fibres grow also at the grain boundary edges of the steel preventing the movement of the dislocations (the first cause of the plasticity and the rupture of a material) and increasing its hardness and its Young coefficient by an order of magnitude with consequent increase in the elasticity of the metal structure and its breaking load. Finally, the interactions between the carbon structures and the surrounding cement should give greater elasticity and hardness to the entire composite structure in which the steels are immersed. This occurs because nano-carbon structures behave like a filament glue that holds cement and steel together
Italy


Nano-Carbonio su acciaio: film di nanotubi di carbonio per rivestimenti impermeabili e protettivi per acciai

Manuela Scarselli, Paola Castrucci, Matteo Salvato, Mattia Scagliotti, Maurizio De Crescenzi

Maurizio De Crescenzi: is professor of Physics of the Structure of Matter at the University of Rome "Tor Vergata", Rome. His research activity has focused on synthesis, structural and electronic properties of surfaces and carbon-based nano-materials. It showed that carbon nanotubes can be used as efficient photonic devices and solar cells. Furthermore, their use can improve the mechanical and chemical properties of materials (and in particular of steels) on which they are grown and attached. He is the author of about 300 international publications. He has organized several national and international conferences on nanostructures.
Mattia Scagliotti: graduated in Physics in 2017 at the University of Rome "Tor Vergata" by discussing a thesis on carbon nanotube / silicon hetero-junction for photovoltaic and photodetector applications. From 2017 he started his PhD in Physics at the University of Rome “Tor Vergata” on the development of photodetectors based on 2D materials and applications of carbon nanotubes in different fields of physics and chemistry of materials.
Matteo Salvato: He is a researcher in condensed matter physics at the University of Rome "Tor Vergata". His research activity has focused on the construction and study of structural and transport properties of thin films, epitaxial multilayers and MBE (Molecular Beam Epitaxy) and CVD deposition (Chemical vapor deposition) techniques. He studied the transport properties of nanomaterials, carbon nanotubes and graphene in solar cell and photodetector applications. He is the author or co-author of over 100 scientific publications in international journals and international conference proceedings on the physics of the subject.
Manuela Scarselli: She is a researcher in solid state physics at the Physics Department of the University of Rome "Tor Vergata". Her experimental activity concerns Scanning Tunneling Microscopy, Atomic Force Microscopy and X-ray spectroscopy. Her interests have focused on the synthesis, characterization, decoration of carbon nanotubes and their application in electrochemical photos for solar cells, growth and characterization on steels. She is the author or co-author of over 100 scientific publications in international journals and international conference proceedings on the physics of the subject.
Paola Castrucci: He is associate professor of Structure of Matter at the Physics Department of the University of Rome "Tor Vergata". Her research activity focused on nanostructures such as nanowires, nanotubes and two-dimensional materials. Her experience ranges from the growth of these systems to their structural and electronic characterization through different spectroscopies, microscopies and diffraction techniques. She has worked on photovoltaic measurements of new-generation carbon-based nanomaterials and 2D nanomaterials.


Stand A21 (pav. 7) - Università degli Studi di Roma "Tor Vergata"


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Data updated on 2019-10-20 - 5.32.19 pm