Influence of graphite purity concentrations on the tribological performance of non-asbestos organic copper-free brake pads

Abstract

Purpose

This paper aims to discuss the influence of graphite with varying purity on the tribological performance of brake pads.

Design/methodology/approach

Three distinct brake pads were created within the scope of this experiment by varying the graphite purity without affecting the other components. The brake pads were made using a traditional manufacturing procedure, and industry standards were used to test the chemical, physical and mechanical properties of the newly produced brake pad. A full-scale inertia brake dynamometer was used to determine the material’s tribological characteristics. The worn surfaces of the brake pads were examined using a scanning electron microscope.

Findings

The test results indicate that brake pads containing 99% pure graphite (artificial grade) displayed good physical, chemical and mechanical features, such as consistent friction and a reduced rate of wear because of the lower impurity level, which eliminates frictional undulations.

Originality/value

This paper discusses the influence of graphite purity on the tribological performance of brake pads by modifying tribofilms and reducing friction undulations.

Citation

I., J.A., R., V., G., S. and D., L.S. (2023), "Influence of graphite purity concentrations on the tribological performance of non-asbestos organic copper-free brake pads", Industrial Lubrication and Tribology, Vol. 75 No. 1, pp. 9-16. https://doi.org/10.1108/ILT-04-2022-0114