1 Introduction
2 Experimental Details
2.1 Sample Preparation
2.2 The Positron Lifetime and Doppler Broadening Measurements
2.3 The Surface Characterization Equipment
3 Results and Discussion
3.1 The Surface Characterization
Cutting process |
S
a (μm) |
S
ku
|
---|---|---|
LC | 5.87 ± 1.28 | 3.02 ± 0.43 |
AWJ | 5.38 ± 0.72 | 3.31 ± 0.18 |
MC | 1.10 ± 0.13 | 3.99 ± 0.55 |
3.2 Positron Lifetime Measurements
Cutting process | Positron lifetime |
---|---|
Bulk value | 109.6 ps |
LC | 122.6 ps intensity 78% |
152.0 ps intensity 22% | |
AWJ | 156.3 ps |
MC | 166.6 ps |