Fémfém

Fémfém is a Hungarian term that literally means "metal–metal." It is not a standardized scientific concept with a single definition, but a descriptive phrase used in some contexts to refer to interactions or combinations between two metallic elements.

In materials science and chemistry, fémfém can denote systems where two metals are in contact or are combined to form a material with properties dictated by both components. This includes dissimilar metal alloys (bimetallic systems) and metal–metal bonding scenarios observed in coordination chemistry or organometallic compounds.

As a practical category, fémfém interfaces appear in applications such as bimetallic coatings, electrical contacts, and joints where diffusion or adhesion between different metals influences wear resistance, electrical conductivity, and corrosion behavior. Intermetallic compounds, where two metals form a distinct crystalline phase (for example NiAl), are another example of metal–metal combinations that can be described informally as fémfém.

Because fémfém is not a standard term in English-language literature, more precise terminology is preferred in technical writing. Common terms include fémötvözet (metal alloy), bimetallic system, intermetallic compound, and metal–metal bonding. The choice of term depends on whether the emphasis is on composition, structure, or bonding.

Related topics include metal alloy, intermetallic compound, bimetallic catalyst, and metal–metal bond.