2007 Volume 48 Issue 4 Pages 225-228
The effect of duplex shot peening treatments with Al2O3 particles and MoS2 solid lubricants on wear reduction of wheel specimens was investigated in extensive dry rolling/ sliding contact tests. The duplex shot peening treatments provided excellent wear reduction under severe loading and sliding conditions because the uniform and minute surface roughness given by the primary shot peening treatment with Al2O3 particles could keep the duplex treated MoS2 layers with low friction coefficients on the wheel specimen surfaces. Furthermore, the crystal orientation of the duplex treated MoS2 layer was well aligned and contributed to excellent wear reduction.