Figure 5From: Copper-Free Resin-Based Braking Materials: A New Approach for Substituting Copper with Fly-Ash Cenospheres in CompositesWear morphology of braking materials at different temperatures: (a) 0%-100 ℃, (b) 0%-250 ℃, (c) 0%-350 ℃, (d) 10%-100 ℃, (e) 10%-250 ℃, (f) 10%-350 ℃Back to article page