Table 1 Relative atomic concentration of typical elements on the wear surfaces lubricated by 10w40+0.1 wt.% Sc-Ag/GN nano-oil after sliding for different times.

From: Supercritical Fluid Synthesis and Tribological Applications of Silver Nanoparticle-decorated Graphene in Engine Oil Nanofluid

Wear scar

Atomic concentration (at. %)

C

O

Fe

Cr

Ag

wear scar of 5 mins

46.029

41.235

11.914

0.822

/

wear scar of 40 mins

47.402

39.838

11.736

1.024

/

wear scar of 60 mins

59.537

32.178

7.522

0.700

0.063

  1. (343 N, 1200 rpm, 75 ± 1 °C).
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