Fig. 8From: An Investigation on the Tribological Performances of the SiO2/MoS2 Hybrid Nanofluids for Magnesium Alloy-Steel ContactsX-ray photoelectron spectra of the elements (Mo3d, S2p, O1s, Fe2p (inset of Fig. 11c), and Si2p) on the worn surface lubricated with pure MoS2 nanofluids (a, c, e, g) and SiO2/MoS2 (0.25:0.75) hybrid nanofluids (b, d, f, h) (8 N, 30 mm/s, 1.5 h)Back to article page