The compound that occurs between two metals is called an intermetallic compound. Intermetallic compounds are formed when two or more metals are alloyed together and the atoms of the different metals combine to form a new, distinct phase. Intermetallic compounds have unique crystal structures, properties, and compositions that are different from those of the individual metals. They are often characterized by high strength, hardness, and resistance to corrosion and oxidation. Intermetallic compounds have a wide range of applications, including in high-temperature alloys, semiconductors, magnets, and superconductors.