SEM inspection and EDX analysis of oxidized Cu DC spark sample - - PowerPoint PPT Presentation
SEM inspection and EDX analysis of oxidized Cu DC spark sample number 37 number 37 S. Heikkinen CERN EN/MME/MM S. Heikkinen CERN EN/MME/MM 3.3.2009 1 st oxidation 30 sparks 30 sparks 2 nd oxidation cps cps 150 Cu Cu 1 st oxidation 100
1st oxidation 30 sparks 30 sparks 2nd oxidation
1st oxidation 30 sparks
150 cps Cu
O l % 3 51
80 100 cps Cu
O l % 2 12 30 sparks 2nd oxidation
150 cps Cu 50 100 O Cu Cu Cu
O element% = 3.51
2 4 6 8 10 20 40 60 O Cu Cu Cu
O element% = 2.12
50 100 O Cu Cu Cu
O element% = 1.27
2 4 6 8 10 Energy (keV) 2 4 6 8 10 Energy (keV) 2 4 6 8 10 Energy (keV)
1st oxidation 30 sparks 30 sparks 2nd oxidation
1st oxidation 30 sparks
150 cps Cu
O l % 3 73
50 cps Cu
30 sparks 2nd oxidation
150 cps Cu
2 4 6 8 10 50 100 O Cu Cu Cu
O element% = 3.73
10 20 30 40 Cu
O element% = 0.89
50 100 O Cu Cu C
O element% = 1.68
2 4 6 8 10 Energy (keV) 2 4 6 8 10 Energy (keV) Cu Cu
2 4 6 8 10 Energy (keV) O Cu Cu
1st oxidation 150 sparks 150 sparks 2nd oxidation 180 sparks
1st oxidation 150 sparks
100 150 cps Cu
O element% = 3.78
150 cps Cu
O element% = 0 95 150 sparks 2nd oxidation 180 sparks
cps 2 4 6 8 10 Energy (keV) 50 O Cu Cu Cu 2 4 6 8 10 50 100 O Cu Cu Cu
O element% 0.95
50 100 150 Cu
O element% = 1.63
gy ( ) Energy (keV) 2 4 6 8 10 Energy (keV) O Cu Cu Cu 100 150 cps Cu
O element% = 0.30
2 4 6 8 10 Energy (keV) 50 O Cu Cu Cu
8
1st oxidation 2nd oxidation 2nd oxidation 130 sparks
1st oxidation 2nd oxidation
150 cps Cu
O element% = 0 36
150 cps Cu
2nd oxidation 130 sparks
150 cps Cu
O element% = 1.49
2 4 6 8 10 50 100 O Cu Cu Cu
O element% 0.36
50 100 150 Cu
O element% = 0.28
2 4 6 8 10 Energy (keV) 50 100 O Cu Cu Cu
2 4 6 8 10 Energy (keV) 2 4 6 8 10 Energy (keV) O Cu Cu Cu
Energy (keV)
9
1st oxidation 200 sparks 2nd oxidation ? 2
1st oxidation
d
2nd oxidation 130 sparks
Conclusions:
the spot.
halo than elsewhere.