Page 341 - Handbook of Materials Failure Analysis

338 CHAPTER 13 A concise filtergram wear particle atlas

100µm 100µm
(a) (b)

100µm 100µm
(c) (d)
FIGURE 13.39
The severe wear particles from an oil sample taken from the gearbox drain (200 ):
(a) a copper alloy sliding wear particle; (b) a sliding wear particle; (c) a fatigue/laminar
wear particle; (d) a black oxide fatigue wear particle.

200µm 200µm
(a) (b)
FIGURE 13.40
The large-size babbitt alloy wear particles from the oil drain of a hydro-turbine (200 ):
(a) a sliding babbitt alloy wear particle with the white metal appearance; (b) a babbitt
alloy sliding wear particle with oxide film.