The research performed in the Structural Materials group is focused in the areas of Metallic, Composite, Ceramics and Glass materials.
The current research projects are based on the following topics:
- NiTi SMA thermal/mechanical treatments, including nanostructuring (severe plastic deformation) and thin films characterization (in situ XRD analysis).
- Powder metallurgical processing of NiTi shape memory alloys.
- In service behaviour of Ni-Ti superelastic endodontic and orthodontic materials.
- Electrical resistivity studies of shape memory alloys during thermal / mechanical cycling, aiming to monitor deformation of structural components, including simultaneous measurement of electrical resistivity and X-ray diffraction (synchrotron radiation).
- Microstructural and elemental characterization and long term corrosion observations in ancient metallic objects as complementary archaeometallurgy studies.
- Process optimization and modelling of metal matrix functionally graded composites, coupled with microtomographic structural characterization (development of dedicated microtomographic image processing tools). Characterization of wear, corrosion and tribocorrosion behaviour.
- Synthesis and characterization of sol-gel prepared films and sol-gel prepared glasses with relevant functional properties.
- Sintering behaviour of glasses and of glass-nanoceramic particle composites: effect of experimental parameters on the final microstructure, thermal, electrical and optical properties of the composites.
- Recycling of solid wastes by ceramic and glass technology.
- valence plus bonding state of chromophore ions (iron, copper, cobalt) in natural painting pigments and in ancient glazes (Portuguese tiles and faience, Chinese porcelains) using synchrotron radiation;
- binding state of strategic metals - particularly, indium - in sulphide ores using synchrotron radiation;
- Coordination of hazardous metals in sulphates from acid mine drainage (lead in jarosite);
- Matter under extreme (P,T) conditions in the Earth’s interior: crystal chemical approaches. The research performed in the Structural Materials group is focused in the areas of Metallic, Composite, Ceramics and Glass materials.