Diffusion-Driven Frictional Aging in Silicon Carbide

Friction is the force resisting relative motion of objects. The depends on material properties, loading conditions and external factors such as temperature humidity, but also contact aging has been identified a primary factor. Several mechanisms have proposed, including increased "contact quantity" due to plastic or elastic creep enhanced quality" formation strong interfacial bonds. While proposed for frictional dependent upon presence normal force, this factor not fundamental prerequisite occurrence aging. In light this, we present novel demonstration substantial effect within cubic silicon carbide system, even when entirely absent. Our observations indicate that time-evolution follows logarithmic behavior, which pattern previously observed in numerous other materials. To explain provide derivation rooted basic statistical mechanics, demonstrating surface diffusion, phenomenon serves minimize energy interface region, can account behavior. Upon application friction owing creep. Although resulting from widely recognized incorporated into most laws, diffusion-driven received comparatively less attention. ultimate objective develop redesign laws by incorporating microscopic with potential enhance their effectiveness.