A5099038287- Metal and Thin Film Mechanics
- High-Temperature Coating Behaviors
- Adhesion, Friction, and Surface Interactions
- Ion-surface interactions and analysis
- Material Properties and Applications
- Intermetallics and Advanced Alloy Properties
- Nuclear Materials and Properties
- Aluminum Alloys Composites Properties
- Fusion materials and technologies
Politecnico di Milano
2024
Abstract This work investigates the role of surface topography in sputtering process tungsten (W) exposed to helium plasma using GyM linear device. Surfaces with varying roughness, from sub-nanometer ≅1 μm, and different textures, including random-like regular configurations, were studied. The samples at energies 30 350 eV, fluence ≅4.3e24 He + m -2 temperatures well below bulk W fuzz formation threshold ≅700 °C. interpretation experimental results was supported by simulations ERO2.0 code....
Tungsten-based coatings with tailored properties were deposited by High Power Impulse Magnetron Sputtering on copper-based substrates to investigate their behaviour as protective barrier against liquid tin corrosion. The produced samples tested in static corrosion experiments at 400°C. While all the remained inert contact tin, results showed that specific morphology and microstrucuture mainly determined performances. Pure-tungsten characterized a columnar-growth suffered from penetration. On...