Effect of the size on the friction characteristics of brake friction materials: a case study with Al₂O₃

Abstract

Purpose

The purpose of this paper is to study the potential of alumina (Al₂O₃) in nanometer size in automotive brake friction materials.

Design/methodology/approach

Four brake linings containing alumina differing in particle size (355 µm and 80 nm) and various amount (5 and 10 Wt.%) were designed and produced. The hardness, density and porosity of the samples were measured. All samples were tested on a full-scale brake dynamometer with gray cast iron disc to determine the tribological properties. Detailed examinations on the worn surface were analyzed using a scanning electron microscopy.

Findings

It was concluded that all performance parameters were beneficially affected because of nano alumina.

Originality/value

This paper emphasizes the importance of nano-composites in the automotive industry and helps industrial firms and academicians working on wear of materials.

Citation

Sugözü, B., Dağhan, B. and Akdemir, A. (2018), "Effect of the size on the friction characteristics of brake friction materials: a case study with Al₂O₃", Industrial Lubrication and Tribology, Vol. 70 No. 6, pp. 1020-1024. https://doi.org/10.1108/ILT-02-2017-0035