This work aims to examine the effect of two different abrasives: zirconium silicate and mullite with three different particle sizes (5, 44 and 149 µm) on the frictional characteristics of brake pads. Six brake pads were developed using these two abrasives with three different sizes. The effect of the abrasives towards fade, recovery and wear was investigated by carrying out a tribological test in a Chase tester following SAE J661 standards. Results indicated that brake pads with coarser particles generated good fade resistance and acceptable recovery rate. This effect was explained based on the formation of a stable friction film observed through the field emission scanning electron microscopy and testing the microhardness at the surface of the samples after dry sliding. However coarser particles exhibited poor wear resistance. In comparison, smaller abrasive particles exhibited poor friction stability with excellent wear resistance. Detailed examination of the wear surfaces was conducted to identify the possible wear mechanism.

这项工作旨在研究两种不同磨料：三种不同粒径（5、44和149 µm）的硅酸锆和莫来石对刹车片摩擦特性的影响。使用这两种具有三种不同尺寸的磨料开发了六个制动片。通过按照SAE J661标准在Chase测试仪中进行摩擦学测试，研究了磨料对褪色，恢复和磨损的影响。结果表明，带有较粗颗粒的制动衬片具有良好的抗褪色性和可接受的恢复率。基于通过场发射扫描电子显微镜观察到的稳定的摩擦膜的形成并测试了干滑动后样品表面的显微硬度，可以解释这种效果。然而，较粗的颗粒表现出差的耐磨性。相比下，较小的磨料颗粒表现出较差的摩擦稳定性，且耐磨性极佳。进行了磨损表面的详细检查，以确定可能的磨损机理。