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Figure 12
The scanning transmission image of Sn–Pb solder film. We used 100 keV X-rays with a focusing-beam size of 0.25 µm (V) × 0.26 µm (H). Eutectic grain structures, several micrometres in size, consisting of lead and tin, were clearly observed.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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