Page 350 - Handbook of Materials Failure Analysis

14 Conclusion 347

E:\SharedData\Quanta Data\Commercial\S\SGS\2014\08/Particles\Chk314-600_001eds.spc
LabelA: SGS Particle TChk314-600
Element Wt.% At.%
O
C K 25.44 39.35
EDS O K 43.67 50.71
Zn
ZnL 27.2 7.73
P K 3.69 2.21
Total 100 100
C P

0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 keV
(a) (b)
FIGURE 13.55
The ESEM/EDS analysis results on thin film debris: (a) the ESEM image of the thin film debris
(400 ); (b) the EDS analysis results.

100µm 100µm
(a) (b)
FIGURE 13.56
A pseudo-metal wear particle (200 ): (a) reflective features of a pseudo-metal wear particle;
(b) the pseudo-metal wear particle fragments into much smaller particles by a gently touch
with a needle tip.

50µm 50µm
(a) (b)
FIGURE 13.57
A pseudo-metal wear particle from the seal oil sample from a gas turbine: (a) a pseudo-metal
wear particle at magnification of 100 ; (b) the same particle at 200 magnification.