Table 4: The results of several line-scans across the RZ-EP/SB interface detected by EDX.


Age group Parameter

The measured chemical
transition zone, μm
The mean value of transition
zone width, μm
Number of pixels per
scanned line

20 days old 38.7 39.6 ± 19.0 317
35.5 291
25.8 204
72.2 99
26.0 68

35 days old 24.0 29.0 ± 14.3 43
26.0 213
17.0 212
54.0 55
24.0 100

480 days old 22.0 18.4 ± 4.3 184
16.0 183
18.4 151
16.5 135
12.9 106
25.0 86