Al5Co4Ni

Al5Co4Ni is an intermetallic compound combining aluminum, cobalt, and nickel in a fixed stoichiometric ratio, representing a research-phase material in the family of lightweight high-temperature intermetallics. This compound is primarily of interest in materials science research for potential aerospace and high-temperature structural applications, where the combination of low density (aluminum-rich) with enhanced strength and thermal stability (from cobalt and nickel additions) could offer advantages over conventional superalloys, though it remains largely in development rather than established production use.