intermetalliska
Intermetalliska, or intermetallics, are compounds formed between two or more metals that have a fixed chemical formula and an ordered crystal structure. Unlike solid solutions, their composition is definite, and the arrangement of atoms confers properties that are distinct from those of their constituent elements.
Common classes include aluminides (such as Ni3Al and TiAl), silicides (e.g., Mg2Si), and various borides and Heusler-type
A key characteristic is brittleness at room temperature, which limits ductility and toughness. They often display
Formation and processing involve diffusion-controlled reactions, powder metallurgy, diffusion bonding, or reactive synthesis from elemental powders.
Applications include TiAl-based alloys for lightweight, high-temperature turbine components, Ni3Al coatings and components for oxidation resistance,
Ongoing research seeks to expand ductility and weldability, explore novel compositions, and tailor microstructures to combine