Preparation and tribological properties of multi-layer graphene/silicon dioxide composites-based solid lubricant coatings at elevated temperatures.

ABSTRACT: The solid lubricating coatings have an important role in hot metal forming. However, traditional lubricants cannot be applied to the harsh working conditions. In this investigation, the novel solid lubricant coatings including multi-layer graphene (MLG)/silicon dioxide (SiO₂) composites and sodium metaphosphate phosphate were prepared. The high-temperature tribological properties of the solid lubricant coatings were investigated by friction and wear tester. The experimental results showed that SiO₂ nanoparticles were evenly grafted by sol-gel method on the surface of MLG, forming MLG/SiO₂ composites. MLG/SiO₂ composites presented excellent thermal stability at 800°C. In the range of 400-800°C, the average coefficients of friction (COFs) were decr

SUBMITTER: Wang W 

PROVIDER: S-EPMC9905988 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature