Apr 06, · Using ball-on-disk tribometry (Si 3 N 4 unterbody) with acting ntact pressures of about 300 MPa, their long-term friction and wear performance under dry nditions are studied. MXene-coated specimens demonstrate a 6-fold friction reduction and an ultralow wear rate (4 × 10 –9 mm 3 N –1 m –1) over 100 000 sliding cycles, outperforming