Study of the nano-network structure in the friction transfer film of the hybrid reinforced aluminum-based composite

Hybrid reinforced aluminum-based composites with a silicate component with pozzolanic activity and silicon carbide ceramic particles as reinforcement phases can form an iron-poor friction transfer film during the friction process, thereby making the aluminum-based composites exhibit a high friction coefficient and a low wear rate characteristics. The phase composition in the friction transfer film was investigated utilizing focused ion beams, transmission electron microscopy, and energy-dispersive X-ray analysis. The results showed that the friction transfer film was mainly composed of nanosized aluminum, ultra-fine aluminum, and crushed silicate particles, which interwove into a nano-network structure to protect the matrix and improve the friction performance.

Automated summary

The study investigates the formation of an iron-poor friction transfer film in hybrid reinforced aluminum-based composites, resulting in high friction coefficient and low wear rate. The composition of the friction transfer film was analyzed using various techniques, revealing the presence of nanosized aluminum, ultra-fine aluminum, and crushed silicate particles interwoven in a nano-network structure.