Abstract:
Friction material in a brake system plays an important role for effective and
safe brake performance. Brake materials contain mainlyAlumina and other
ingredients. This research attempts to examine mechanical properties of
Boron mixed brake pads. Five groups of semi-metallic composite materials
were studied. Friction coefficient of Boron mixed and commercial brake
pads were significantly different.Average friction coefficient of Boron mixed
pads was 0.495, 0.065 higher than commercial pad. Abrupt reduction of
friction coefficient which is known as fade was more significant in the
commercial pad samples than in Boron mixed pads. Fade occurred in
commercial pad sample at the lower temperature as first fade was at 204oC
and second was at 159oC resulted from earlier softening and degradation of
Alumina material. All Boron pads were more stable and constant than their
commercial counterparts. The study shows a slight reduction of friction
coefficient at a temperature of 204oC during the first fade and 238oC on the
second for Boron mixed pads. Both commercial and Boron mixed brake
pads showed normal recovery stage in that they returned to their pre-fade
friction coefficient levels with little temperature reduction. Properties of
Boron mixed brake pads are better than Commercial brake pads.
2013 Trade Science Inc. - INDIA
