K3Au

K3Au is an intermetallic compound composed of potassium and gold, representing a rare metal combination of primarily research interest. This material belongs to the family of alkali-metal/noble-metal intermetallics, which are typically studied for their unusual electronic and structural properties rather than for conventional engineering applications. K3Au remains largely experimental; its practical deployment is limited, but such compounds offer potential interest in solid-state physics research, materials science exploration of novel phase diagrams, and fundamental studies of metal bonding behavior.