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Intermetallics

From Biocrawler, the free encyclopedia.

Intermetallics is concerned with all aspects of ordered chemical compounds between two or more metals and notably with their applications. In a mechanical context, such compounds often offer a compromise between ceramic and metallic properties when hardness and/or resistance to high temperatures is important enough to sacrifice some toughness and ease of processing. They can also display desirable magnetic and chemical properties, due to their strong internal order and mixed (metallic and covalent/ionic) bonding, respecitvely.

Some examples include alnico and the hydrogen storage materials in nickel metal hydride batteries. Ni₃Al and the many titanium aluminides have also attracted interest for turbine blade applications, while the latter is used in very small quantities for grain refinement of titanium alloys.

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