[Retracted] Tribological Behavior and Surface Characterization of Gray Cast Iron-EN31 Steel under Lubricated Sliding Conditions

Figure 5

(a–c) Micrograph with 40 pride oil.

(a) 30 N, 1.0 m/s, 300 m

(b) 30 N, 1.0 m/s, 600 m

(c) 30 N, 1.0 m/s, 900 m