composite coatings. By depositing then heat treating a TiCr alloy coating on a Ni-base
superalloy, a eutectic reaction occurs at the coating/substrate interface, which drives
spontaneous pattern formation in both alloys analogous to liquid metal dealloying. The
coating exhibits a significantly higher hardness (15 GPa) than both the starting alloy (3.7
GPa) and precursor coating (6 GPa), measured by micro-and nanoindentation, while …