Figure 4
From: Towards eliminating friction and wear in plain bearings operating without lubrication
Wear tests results of oxide-alloyed steel disks sliding against bronze without lubrication: (a) evolution of COF depend on normal load for different oxide composition, (b) evolution of COF versus bismuth oxide content, (c) temperature evolution during wear test of disk alloyed with MnO2—20% Bi2O3 powder mix, (d) prolonged wear test of disk alloyed with MnO2—20% Bi2O3 powder mix at the normal load of 250 N.
