“…Generally speaking, from the macro-perspective, reinforced fibers have a high modulus, high strength, and good thermal and tribological stability, which can be used to enhance strength, fade resistance (the resistance of the friction coefficient (COF) to high-temperature reduction), and wear resistance [ 9 ]. From the micro-perspective, reinforced fibers play a positive role in consolidating wear debris, and they are the primary plateau, which can produce nucleation of wear debris, thus promoting the formation of a secondary plateau [ 10 , 11 , 12 ]. Commonly used reinforced fibers include metal fiber (such as steel fiber and copper fiber, etc.…”