Engineering‐Grade Macroscale Superlubricity Under Ultrahigh Contact Pressure in Atmospheric Air via Multiscale Synergistic Meta‐Interfaces

crystal integrity and suppresses oxidation. Our findings demonstrate a robust superlubricity regime with a friction coefficient of 0.008 sustained over 100 000 laps under extreme coupled conditions: millimeter-scale contact size, 12.7 GPa contact pressure, and 40% relative humidity. This design paradigm extends structural superlubricity from nanoscale model systems to practical technologies for sustainable engineering.