CaAu3

CaAu₃ is an intermetallic compound combining calcium and gold in a fixed 1:3 stoichiometric ratio, belonging to the broader family of gold-based intermetallics and rare-earth-adjacent compounds. This material is primarily of research and specialized interest rather than widespread industrial use; it is studied in materials science for its unique crystal structure and potential electronic or catalytic properties that distinguish it from conventional gold alloys. Engineers would consider this compound in niche applications requiring the specific combination of gold's chemical inertness with calcium's lighter-element properties, though commercial deployment remains limited compared to conventional Au-Cu or Au-Ag alloys.