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Tantalum single crystal 73Ta180.948
Discovered in 1802 by A.G. Ekeberg at Uppsala, Sweden.
[Greek: tantalos = father of Niobe of Greek mythology]
French: tantale
German: tantal
Italian: tantalio
Spanish: tántalo
Description: Tantalum is a shiny, silvery metal which is soft when pure. It is very resistant to corrosion due to an oxide film on its surface, but is is attacked by HF and molten alkalis. Tantalum is used in electronics, cutting tools, chemical plants and surgery.
| Metal single crystal properties | ||
|---|---|---|
| State: | single crystal | |
| Crystal structure: | bcc | |
| Production method: | Floating zone | |
| Standard size: | diameter 6-12mm thickness 1-2mm |
|
| Orientation: | (100), (110) and (111) | |
| Orientation accuracy: | <2°, <1°, <0.5° or <0.1° | |
| Polishing: | as cut, one or two sides polished | |
| Roughness of surface: | <0.03µm | |
| Purity: | 99.99% | |
| Typical analysis (ppm): | Al < 1 C 80 Co < 3 Cu < 1 Fe 5 |
H < 10 N 90 O 120 S < 10 Si 25 Ta balance |