Cross sectioning of copper foil with lithium layer
Purpose
The sample is just 46 µm thick and difficult to handle.
Goal
Cross sectioning to obtain information concerning the interface between the copper foil and the Lithium / Carbon layer.
Preparation Conditions
Mechanical pre-preparation
Cut the foil with a razor blade to get the appropriate sample size and a flat sample edge.
Ion Milling
| Acceleration voltage: | 7 kV |
| Current: | 2.6 mA |
| Oscillation angle: | ±40° |
| Milling time: | 3 h |
Results
- Cut is very flat and clean
- Grain structure of copper and the Lithium / Carbon layer is clearly visible
- Interface structure is clearly recognizable
Cross sectioning of Sn on Cu
Purpose
Cu and Sn are very soft. They are very difficult to prepare in a conventional way.
Goal
Cross sectioning to obtain information regarding the grain structure of Tin and the interface area.
Preparation Conditions
Mechanical pre-preparation
Cut the foil with a razor blade to achieve the appropriate sample size with a flat milling edge.
Ion milling
| Acceleration voltage: | 6 kV |
| Gun current: | 2.6 mA |
| Milling angle: | 3° |
| Oscillation angle: | ±35° |
| Milling time: | 3.5 h |
Results
- The columnar structure of Sn with cracks is visible
- Grain structure and interface structure are clearly visbible
- Voids and Cracks in the interface area
- Grain structure of Cu
