Tribological Properties of Nanolamellar MoS₂ Doped with Copper Nanoparticles

Figure 5

Three-dimensional images of the wear scars for the samples lubricated with undoped (a) and doped (b) nanolamellar MoS₂ (a) and undoped (c) and doped (d) commercial MoS₂.

(a)

(b)

(c)

(d)