Fig. 3From: Study of tribological behavior of Cu–MoS2 and Ag–MoS2 nanocomposite lubricantsFriction coefficient of powders 1—MoS2 + 50 % Cu, 2—MoS2, 3—MoS2 + 25 % Cu, 4—MoS2 + 2 % Cu, 5—MoS2 + 7 % CuBack to article page