Tribological Performance of Automobile Brake Pads by Using Metal Matrix Composites

Abstract

In today's ambitious world, there's a growing demand for high-performance components that are strong yet lightweight, durable, and energy-efficient, especially in industries such as automotive, aerospace, military, and sports. Aluminum, known for its low weight and excellent dimensional stability, is a popular choice. It is often reinforced with materials like SiC (silicon carbide) and Ni-Gr (nickel-graphite) to enhance wear and temperature resistance, making it suitable for various automotive applications, including cylinder fins, heat sinks, and piston materials. Additionally, common filler materials like silicon nitride (Si3N4), boron carbide (B4C), boron nitride (BN), aluminum oxide (Al2O3), aluminum nitride (AlN), titanium carbide (TiC), and titanium oxide (TiO2) tend to exhibit better compatibility with aluminum when it is in alloy form. Composites, especially metal matrix composites made of aluminum, offer superior mechanical properties compared to traditional metals. These composites are characterized by high specific strength, low weight, hardness, and wear resistance. Unlike unreinforced alloys, metal matrix composites possess exceptional tribological properties, allowing them to effectively compete with conventional materials in various tribological applications. These aluminum particle-filled metal matrix composites are actively pursued across sectors, including aerospace and automotive, due to their improved physical and tribo-mechanical properties.