Aşındırıcı Türü ve Boyutunun Otomotiv Fren Balatalarının Sürtünme-Aşınma Performansına Etkisi.

This study investigated the effects of abrasive type and particle size on the friction-wear characteristics of automotive brake friction materials. The Al2O3, SiC and B4C ceramic powders with different type and particle size were used as abrasive. Friction tests were performed on a Chase friction material testing machine according to the brake lining quality test procedure as per SAE J661. The composites were contained typical ingredients for commercial brake friction materials. The results showed that the highest and the lowest friction coefficients were recorded as 0.61 and 0.489 for Al2O3 containing A63 and SiC containing S63 coded samples. The B90 coded composite containing B4C showed the highest wear resistance. The friction coefficient of the composites increased and the specific wear rate decreased with increasing abrasive particle sizes. In order to reveal the wear behavior and mechanism, the worn surfaces of the composites as well as wear debris were examined under scanning electron microscopy. [ABSTRACT FROM AUTHOR]